<script data-pm-proxy="intercept"></script><?xml version="1.0" encoding="UTF-8"?><rss xmlns:dc="http://purl.org/dc/elements/1.1/" xmlns:content="http://purl.org/rss/1.0/modules/content/" xmlns:atom="http://www.w3.org/2005/Atom" version="2.0" xmlns:itunes="http://www.itunes.com/dtds/podcast-1.0.dtd" xmlns:googleplay="http://www.google.com/schemas/play-podcasts/1.0"><channel><title><![CDATA[TechLeads.club 💎]]></title><description><![CDATA[Substack da comunidade TechLeads.club | Construindo software de qualidade, juntos!]]></description><link>https://techleadsclub.substack.com</link><image><url>https://substackcdn.com/image/fetch/$s_!Z9-W!,w_256,c_limit,f_auto,q_auto:good,fl_progressive:steep/https%3A%2F%2Fsubstack-post-media.s3.amazonaws.com%2Fpublic%2Fimages%2F134844ec-ca47-4df0-ab39-8ead3a5bf341_256x256.png</url><title>TechLeads.club 💎</title><link>https://techleadsclub.substack.com</link></image><generator>Substack</generator><lastBuildDate>Wed, 02 Sep 2026 21:03:37 GMT</lastBuildDate><atom:link href="/__u/techleadsclub.substack.com/feed" rel="self" type="application/rss+xml"/><copyright><![CDATA[TechLeads.club]]></copyright><language><![CDATA[pt-br]]></language><webMaster><![CDATA[techleadsclub@substack.com]]></webMaster><itunes:owner><itunes:email><![CDATA[techleadsclub@substack.com]]></itunes:email><itunes:name><![CDATA[Waldemar Neto]]></itunes:name></itunes:owner><itunes:author><![CDATA[Waldemar Neto]]></itunes:author><googleplay:owner><![CDATA[techleadsclub@substack.com]]></googleplay:owner><googleplay:email><![CDATA[techleadsclub@substack.com]]></googleplay:email><googleplay:author><![CDATA[Waldemar Neto]]></googleplay:author><itunes:block><![CDATA[Yes]]></itunes:block><item><title><![CDATA[🗞️ Newsletter #89]]></title><description><![CDATA[Sub agents com IA, L&#237;deres em pausa na carreira, Citizens Build Agents Execute Experts Govern, DevTools para AI Engineering, Decis&#227;o em modelos de IA e mais]]></description><link>https://techleadsclub.substack.com/p/newsletter-89</link><guid isPermaLink="false">https://techleadsclub.substack.com/p/newsletter-89</guid><dc:creator><![CDATA[William Calderipe]]></dc:creator><pubDate>Tue, 25 Aug 2026 16:13:53 GMT</pubDate><enclosure url="https://substackcdn.com/image/youtube/w_728,c_limit/hE9vQkCuTyo" length="0" type="image/jpeg"/><content:encoded><![CDATA[<h2>Destaques</h2><div id="youtube2-hE9vQkCuTyo" class="youtube-wrap" data-attrs="{&quot;videoId&quot;:&quot;hE9vQkCuTyo&quot;,&quot;startTime&quot;:null,&quot;endTime&quot;:null}" data-component-name="Youtube2ToDOM"><div class="youtube-inner"><iframe src="https://www.youtube-nocookie.com/embed/hE9vQkCuTyo?rel=0&amp;autoplay=0&amp;showinfo=0&amp;enablejsapi=0" frameborder="0" loading="lazy" gesture="media" allow="autoplay; fullscreen" allowautoplay="true" allowfullscreen="true" width="728" height="409"></iframe></div></div><p>Waldemar Neto explica em quais situa&#231;&#245;es vale usar sub agents no trabalho com IA e quando eles atrapalham.</p><p><strong><a href="https://newsletter.pragmaticengineer.com/p/the-great-engineering-leader-career-break?utm_source=techleadsclub&amp;utm_medium=newsletter&amp;utm_term=89">Headed for the Exit: the Great Engineering Leader Career Break</a></strong></p><p>Gergely Orosz ouviu quase 20 l&#237;deres de engenharia em pausa de carreira e reuniu dez motivos para a sa&#237;da, entre eles expectativas irreais de founders sobre IA, equity inviabilizada pela pilha de prefer&#234;ncia dos investidores e times menores que reduzem a necessidade de VPs.</p><p><strong><a href="https://martinfowler.com/rachels-ramblings/citizens-agents-experts.html?utm_source=techleadsclub&amp;utm_medium=newsletter&amp;utm_term=89">Citizens Build, Agents Execute, Experts Govern</a></strong></p><p>Rachel Laycock sustenta que escrever software deixou de ser o recurso escasso e que o gargalo agora &#233; o julgamento de engenharia que decide se um sistema pode ser confiado em produ&#231;&#227;o.</p><h2>Favoritos</h2><p><strong><a href="https://newsletter.pragmaticengineer.com/p/from-chrome-devtools-to-ai-engineering?utm_source=techleadsclub&amp;utm_medium=newsletter&amp;utm_term=89">From Chrome DevTools to AI Engineering, with Addy Osmani</a></strong></p><p>Addy Osmani conta ao Pragmatic Engineer sua trajet&#243;ria de 14 anos no Chrome e no DevTools, alerta para a rendi&#231;&#227;o cognitiva no desenvolvimento assistido por IA e recomenda que engenheiros somem repert&#243;rio de produto e go-to-market ao trabalho t&#233;cnico.</p><p><strong><a href="/__u/alklaser.substack.com/p/o-iconoclasta-otimista-edicao-41?utm_source=techleadsclub&amp;utm_medium=newsletter&amp;utm_term=89">Quem decide quando o seu modelo de IA sai do ar</a></strong></p><p>Alexandre Klaser parte do desligamento do Fable 5 e do Mythos 5 por diretiva do BIS americano para mostrar que trocar de modelo virou f&#225;cil, mas desfazer a depend&#234;ncia n&#227;o, porque a irreversibilidade saiu da API e passou a morar em workflows, ajustes finos e integra&#231;&#245;es.</p><p><strong><a href="/__u/addyo.substack.com/p/human-judgment-doesnt-leave-the-software?utm_source=techleadsclub&amp;utm_medium=newsletter&amp;utm_term=89">Human judgment doesn&#8217;t leave the software factory. It relocates.</a></strong></p><p>Addy Osmani argumenta que o julgamento humano n&#227;o sai da f&#225;brica de software com IA, apenas muda de posi&#231;&#227;o na cadeia.</p><p><strong><a href="https://seangoedecke.com/you-should-never-be-angry-at-work/?utm_source=techleadsclub&amp;utm_medium=newsletter&amp;utm_term=89">You should never be angry at work</a></strong></p><p>Sean Goedecke argumenta que times saud&#225;veis contornam o engenheiro raivoso e tiram as decis&#245;es do alcance dele, e prop&#245;e alinhar o que se valoriza ao que a organiza&#231;&#227;o valoriza em vez de simplesmente se importar menos.</p><p><strong><a href="https://earendil.com/posts/what-is-a-harness/?utm_source=techleadsclub&amp;utm_medium=newsletter&amp;utm_term=89">What Is a Harness?</a></strong></p><p>Post define o que &#233; um harness de agentes de IA e quais componentes o formam.</p><p><strong><a href="https://lalitm.com/post/find-problems-staff-engineer/?utm_source=techleadsclub&amp;utm_medium=newsletter&amp;utm_term=89">How I find problems to solve as a staff engineer</a></strong></p><p>Post descreve como um staff engineer identifica quais problemas valem ser resolvidos dentro da empresa.</p><p><strong><a href="https://martinfowler.com/articles/practitioner-voice.html?utm_source=techleadsclub&amp;utm_medium=newsletter&amp;utm_term=89">Practitioner Voice: The Writing Category Nobody has Named Yet</a></strong></p><p>Martin Fowler caracteriza a escrita t&#233;cnica produzida por quem exerce o of&#237;cio, categoria que segundo ele ainda n&#227;o recebeu um nome.</p><p><strong><a href="https://rhonabwy.com/2026/08/15/software-engineering-fundamentals-matter-more-than-ever/?utm_source=techleadsclub&amp;utm_medium=newsletter&amp;utm_term=89">Software Engineering fundamentals matter more</a></strong></p><p>Post defende que os fundamentos de engenharia de software importam mais do que nunca no desenvolvimento assistido por IA.</p><h2>AI</h2><p><strong><a href="https://blog.modelcontextprotocol.io/posts/mcp-roadmap/?utm_source=techleadsclub&amp;utm_medium=newsletter&amp;utm_term=89">New MCP Roadmap</a></strong></p><p>O projeto Model Context Protocol publicou o novo roadmap da especifica&#231;&#227;o.</p><p><strong><a href="https://www.latent.space/p/attention-interface?utm_source=techleadsclub&amp;utm_medium=newsletter&amp;utm_term=89">The Evolution of the Agent Harness</a></strong></p><p>Dan McAteer tra&#231;a na Latent Space a evolu&#231;&#227;o do harness de agentes at&#233; o que ele descreve como uma interface de aten&#231;&#227;o.</p><p><strong><a href="https://www.latent.space/p/simile?utm_source=techleadsclub&amp;utm_medium=newsletter&amp;utm_term=89">Simulation: the new Scaling Law &#8212; Joon Sung Park, Simile AI</a></strong></p><p>Joon Sung Park, da Simile AI, apresenta a simula&#231;&#227;o como a pr&#243;xima lei de escala em IA.</p><p><strong><a href="https://www.latent.space/p/wayfinder-skill?utm_source=techleadsclub&amp;utm_medium=newsletter&amp;utm_term=89">The /wayfinder Skill: Navigating the &#8220;Fog of War&#8221; of Planning</a></strong></p><p>Matt Pocock apresenta a skill /wayfinder, uma camada orquestradora que divide o planejamento em sess&#245;es de grilling, prot&#243;tipo, pesquisa e tarefa para projetos cujo destino ainda n&#227;o est&#225; definido no in&#237;cio.</p><p><strong><a href="https://www.latent.space/p/glean-model-routing?utm_source=techleadsclub&amp;utm_medium=newsletter&amp;utm_term=89">Frontier Model Cost and Open-Weights Popularity is Driving Demand for Model Routing</a></strong></p><p>Arvind Jain, CEO da Glean, conta &#224; Latent Space que o roteamento autom&#225;tico entre modelos &#233; escolhido pelos clientes sobretudo por custo, e afirma que empresas passaram a considerar modelos de pesos abertos parte central da estrat&#233;gia de IA nos &#250;ltimos tr&#234;s meses.</p><p><strong><a href="https://simonwillison.net/2026/Aug/22/more-than-just-code-review/?utm_source=techleadsclub&amp;utm_medium=newsletter&amp;utm_term=89">More than just code review</a></strong></p><p>Simon Willison sustenta que a habilidade central com agentes de c&#243;digo &#233; instruir e verificar com confian&#231;a, e que ler linha a linha nunca foi a forma mais eficaz de validar uma mudan&#231;a.</p><p><strong><a href="https://simonwillison.net/2026/Aug/23/anthropics-best-ai-model-struggles-to-attract-users-as-cheaper-t/?utm_source=techleadsclub&amp;utm_medium=newsletter&amp;utm_term=89">Anthropic&#8217;s best AI model struggles to attract users as cheaper tools thrive</a></strong></p><p>Reportagem do Financial Times aponta que o modelo mais capaz da Anthropic tem dificuldade de atrair usu&#225;rios enquanto ferramentas mais baratas ganham espa&#231;o.</p><p><strong><a href="https://simonwillison.net/2026/Aug/16/qwen-38-27b/?utm_source=techleadsclub&amp;utm_medium=newsletter&amp;utm_term=89">Qwen 3.8 27B is excellent, but it defaults to wildly overthinking things</a></strong></p><p>Simon Willison avalia o Qwen 3.8 27B como excelente, mas aponta que o modelo raciocina em excesso por padr&#227;o.</p><p><strong><a href="https://newsletter.posthog.com/p/this-post-will-save-you-tokens?utm_source=techleadsclub&amp;utm_medium=newsletter&amp;utm_term=89">This post will save you tokens</a></strong></p><p>Ian Vanagas, da PostHog, re&#250;ne pr&#225;ticas para reduzir o consumo de tokens no trabalho com agentes.</p><p><strong><a href="https://fabiensanglard.net/agent.md/index.html?utm_source=techleadsclub&amp;utm_medium=newsletter&amp;utm_term=89">My agent.md to improve LLM-assisted code quality</a></strong></p><p>Fabien Sanglard publica o agent.md que usa para elevar a qualidade do c&#243;digo gerado com apoio de LLMs.</p><p><strong><a href="https://forum.level1techs.com/t/why-your-local-llm-feels-dumber-than-it-is/253917?utm_source=techleadsclub&amp;utm_medium=newsletter&amp;utm_term=89">Why your local LLM feels dumber than it is</a></strong></p><p>Post explica por que modelos rodados localmente parecem piores do que s&#227;o e quais escolhas de configura&#231;&#227;o degradam o resultado.</p><p><strong><a href="https://allaboutcoding.ghinda.com/a-week-of-using-codex-more-than-claude/?utm_source=techleadsclub&amp;utm_medium=newsletter&amp;utm_term=89">A week of using Codex more than Claude</a></strong></p><p>Desenvolvedor relata uma semana usando o Codex mais que o Claude e compara os dois no dia a dia.</p><p><strong><a href="https://simonwillison.net/2026/Aug/19/smolmachines-untrusted-sandbox/?utm_source=techleadsclub&amp;utm_medium=newsletter&amp;utm_term=89">smolmachines / smolvm as a sandbox for untrusted Python &amp; JavaScript</a></strong></p><p>Simon Willison testa smolmachines e smolvm como sandbox para executar Python e JavaScript n&#227;o confi&#225;veis.</p><h2>Arquitetura</h2><p><strong><a href="https://www.raphaelbauer.com/posts/postgresql-everything/?utm_source=techleadsclub&amp;utm_medium=newsletter&amp;utm_term=89">PostgreSQL for Everything</a></strong></p><p>Raphael Bauer defende usar o PostgreSQL como fila, cache, busca e armazenamento de vetores em vez de somar um componente de infraestrutura para cada necessidade.</p><p><strong><a href="https://blog.bytebytego.com/p/schema-evolution-changing-the-contract?utm_source=techleadsclub&amp;utm_medium=newsletter&amp;utm_term=89">Schema Evolution: Changing the Contract Without Breaking What Runs</a></strong></p><p>A ByteByteGo detalha estrat&#233;gias de evolu&#231;&#227;o de schema que mudam o contrato de dados sem quebrar os sistemas j&#225; em execu&#231;&#227;o.</p><p><strong><a href="https://blog.bytebytego.com/p/graphrag-how-ai-answers-questions?utm_source=techleadsclub&amp;utm_medium=newsletter&amp;utm_term=89">GraphRAG: How AI Answers Questions Hidden Across Many Documents</a></strong></p><p>A ByteByteGo explica como o GraphRAG responde perguntas cuja resposta est&#225; espalhada por muitos documentos.</p><p><strong><a href="https://blog.bytebytego.com/p/ep223-ollama-vs-vllm-vs-sglang?utm_source=techleadsclub&amp;utm_medium=newsletter&amp;utm_term=89">EP223: Ollama vs vLLM vs SGLang</a></strong></p><p>A ByteByteGo compara Ollama, vLLM e SGLang como motores de infer&#234;ncia e indica em que cen&#225;rio cada um se encaixa.</p><p><strong><a href="https://newsletter.systemdesignclassroom.com/p/your-ai-agent-wont-crash-the-same?utm_source=techleadsclub&amp;utm_medium=newsletter&amp;utm_term=89">Your AI Agent Won&#8217;t Crash. It Will Happily Pay an Invoice Without Approval</a></strong></p><p>Raul Junco mostra que agentes de IA n&#227;o falham com stack trace e sim executando a&#231;&#245;es plaus&#237;veis e erradas, como pagar uma fatura sem aprova&#231;&#227;o, e defende desenhar checkpoints de autoriza&#231;&#227;o no fluxo.</p><p><strong><a href="https://tigerbeetle.com/blog/2026-08-20-protocol-aware-dst?utm_source=techleadsclub&amp;utm_medium=newsletter&amp;utm_term=89">Protocol-Aware Deterministic Simulation Testing</a></strong></p><p>A TigerBeetle descreve como aplica simula&#231;&#227;o determin&#237;stica ciente do protocolo para encontrar falhas de consenso que testes convencionais n&#227;o alcan&#231;am.</p><p><strong><a href="http://notes.eatonphil.com/2026-08-16-transactions-in-cassandra.html?utm_source=techleadsclub&amp;utm_medium=newsletter&amp;utm_term=89">The road to ACID transactions in Cassandra 6</a></strong></p><p>Phil Eaton percorre o caminho que levou o Cassandra 6 a suportar transa&#231;&#245;es ACID.</p><p><strong><a href="http://notes.eatonphil.com/2026-08-23-another-look-at-sqlite-wal-reset.html?utm_source=techleadsclub&amp;utm_medium=newsletter&amp;utm_term=89">Another look at SQLite&#8217;s WAL-Reset bug</a></strong></p><p>Phil Eaton revisita o bug de WAL-Reset do SQLite e detalha as condi&#231;&#245;es em que ele aparece.</p><p><strong><a href="https://dropbox.tech/infrastructure/improving-infrastructure-efficiency-for-growing-demand-in-the-age-of-ai?utm_source=techleadsclub&amp;utm_medium=newsletter&amp;utm_term=89">Improving infrastructure efficiency for growing demand in the age of AI</a></strong></p><p>A engenharia do Dropbox descreve como aumentou a efici&#234;ncia da pr&#243;pria infraestrutura para atender &#224; demanda crescente na era da IA.</p><p><strong><a href="https://how.complexsystems.fail/?utm_source=techleadsclub&amp;utm_medium=newsletter&amp;utm_term=89">How Complex Systems Fail (1998)</a></strong></p><p>Richard Cook lista dezoito teses sobre como sistemas complexos falham, entre elas a de que todo sistema em produ&#231;&#227;o opera em modo degradado e que nunca h&#225; causa raiz &#250;nica.</p><h2>Lideran&#231;a t&#233;cnica</h2><p><strong><a href="https://newsletter.getdx.com/p/can-predictable-delivery-be-measured?utm_source=techleadsclub&amp;utm_medium=newsletter&amp;utm_term=89">Can &#8220;Predictable Delivery&#8221; be measured?</a></strong></p><p>Brian Houck examina se entrega previs&#237;vel pode ser medida e quais indicadores sustentam essa leitura.</p><p><strong><a href="https://newsletter.getdx.com/p/is-there-a-relationship-between-cycle?utm_source=techleadsclub&amp;utm_medium=newsletter&amp;utm_term=89">Is there a relationship between cycle time and PR throughput?</a></strong></p><p>Brian Houck investiga se existe rela&#231;&#227;o entre tempo de ciclo e volume de PRs entregues pelos times.</p><p><strong><a href="https://refactoring.fm/p/burnout-is-a-system-issue-with-dominika?utm_source=techleadsclub&amp;utm_medium=newsletter&amp;utm_term=89">Burnout is a System Issue &#129707; &#8212; with Dominika Rogala</a></strong></p><p>Dominika Rogala defende no Refactoring que burnout &#233; um problema de sistema, n&#227;o de resili&#234;ncia individual.</p><p><strong><a href="https://circleci.com/resources/2026-state-of-software-delivery/?utm_source=techleadsclub&amp;utm_medium=newsletter&amp;utm_term=89">The 2026 State of Software Delivery - CircleCI</a></strong></p><p>A CircleCI publicou o relat&#243;rio State of Software Delivery de 2026, com dados de entrega de software coletados na pr&#243;pria plataforma.</p><p><strong><a href="https://www.linkedin.com/pulse/por-que-organiza%C3%A7%C3%B5es-mais-investem-em-treinamento-s%C3%A3o-trentim-behvf/?trackingId=2%2Fju%2FqieR3um6yBzxg3bAw%3D%3D&amp;utm_source=techleadsclub&amp;utm_medium=newsletter&amp;utm_term=89">Por que as organiza&#231;&#245;es que mais investem em treinamento s&#227;o as que menos aprendem? | LinkedIn</a></strong></p><p>Peter Trentim argumenta que investir mais em treinamento n&#227;o produz mais aprendizado organizacional e aponta o que separa as duas coisas.</p><h2>Ferramentas</h2><p><strong><a href="https://simonwillison.net/2026/Aug/22/llm/?utm_source=techleadsclub&amp;utm_medium=newsletter&amp;utm_term=89">llm 0.33</a></strong></p><p>A vers&#227;o 0.33 do llm migra para a biblioteca OpenAI 3.x, aceita --key em comandos de embedding e permite combinar m&#250;ltiplos templates numa mesma chamada.</p><p><strong><a href="https://simonwillison.net/2026/Aug/18/mojo-is-now-open-source/?utm_source=techleadsclub&amp;utm_medium=newsletter&amp;utm_term=89">Mojo&#128293; is now open source</a></strong></p><p>A Modular abriu o c&#243;digo do Mojo, linguagem voltada a programa&#231;&#227;o de alto desempenho e IA.</p><p><strong><a href="https://deepseek.com/harness/en/?utm_source=techleadsclub&amp;utm_medium=newsletter&amp;utm_term=89">DeepSeek Harness developer preview: Everything is a plugin</a></strong></p><p>A DeepSeek lan&#231;ou o developer preview do seu harness, com arquitetura em que todo componente &#233; um plugin.</p><p><strong><a href="https://solidobjects.dev/?utm_source=techleadsclub&amp;utm_medium=newsletter&amp;utm_term=89">Solid Objects &#8212; Durable Objects for Node.js and Rails</a></strong></p><p>O Solid Objects leva atores dur&#225;veis e endere&#231;&#225;veis, no estilo dos Durable Objects da Cloudflare, para Node.js e Rails usando o banco de dados existente.</p><p><strong><a href="https://simonwillison.net/2026/Aug/21/stop-making-tuis/?utm_source=techleadsclub&amp;utm_medium=newsletter&amp;utm_term=89">Stop Making TUIs</a></strong></p><p>Post argumenta contra criar novas interfaces de terminal e defende alternativas para ferramentas de linha de comando.</p><p><strong><a href="https://registerspill.thorstenball.com/p/joy-and-curiosity-96?utm_source=techleadsclub&amp;utm_medium=newsletter&amp;utm_term=89">Joy &amp; Curiosity #96</a></strong></p><p>Thorsten Ball re&#250;ne na edi&#231;&#227;o 96 do Joy &amp; Curiosity links, ferramentas e leituras da semana.</p><p><strong><a href="https://lixo.org/please-review/?utm_source=techleadsclub&amp;utm_medium=newsletter&amp;utm_term=89">PR Line CI Simulator</a></strong></p><p>Simulador interativo mostra o efeito de fila e espera de revis&#227;o de PR sobre o tempo de entrega de um time.</p><p><strong><a href="https://github.com/AprilNEA/OpenLogi?utm_source=techleadsclub&amp;utm_medium=newsletter&amp;utm_term=89">GitHub - AprilNEA/OpenLogi: &#9889;&#65039;A native, local-first alternative to Logitech Options+, written in Rust &#129408;</a></strong></p><p>O OpenLogi &#233; uma alternativa nativa e local ao Logitech Options+, escrita em Rust, que remapeia bot&#245;es, DPI e SmartShift via HID++ sem conta nem telemetria.</p>]]></content:encoded></item><item><title><![CDATA[🗞️ Newsletter #88]]></title><description><![CDATA[IA para desenvolvimento da Charity Majors, Onda de demiss&#245;es na Meta, TDD com agentes de IA, Ado&#231;&#227;o de IA sem decisor, Modelos locais vs datacenters e mais]]></description><link>https://techleadsclub.substack.com/p/newsletter-88</link><guid isPermaLink="false">https://techleadsclub.substack.com/p/newsletter-88</guid><dc:creator><![CDATA[William Calderipe]]></dc:creator><pubDate>Sun, 16 Aug 2026 17:52:15 GMT</pubDate><enclosure url="https://substackcdn.com/image/fetch/$s_!Z9-W!,w_256,c_limit,f_auto,q_auto:good,fl_progressive:steep/https%3A%2F%2Fsubstack-post-media.s3.amazonaws.com%2Fpublic%2Fimages%2F134844ec-ca47-4df0-ab39-8ead3a5bf341_256x256.png" length="0" type="image/jpeg"/><content:encoded><![CDATA[<h2>Destaques</h2><p><strong><a href="https://newsletter.pragmaticengineer.com/p/stop-being-skeptical-about-ai-for?utm_source=techleadsclub&amp;utm_medium=newsletter&amp;utm_term=88">Stop being skeptical about AI for development with Charity Majors</a></strong></p><p>Charity Majors, CTO da Honeycomb, conta ao Pragmatic Engineer que passou a ver a IA como mudan&#231;a geracional em novembro de 2025 por causa do harness do Claude Code, chama code review de superestimado e defende que c&#243;digo n&#227;o determin&#237;stico exige mais disciplina em testes, evals e conformance testing.</p><p><strong><a href="https://newsletter.pragmaticengineer.com/p/the-pulse-metas-self-inflicted-resignation?utm_source=techleadsclub&amp;utm_medium=newsletter&amp;utm_term=88">The Pulse: Meta&#8217;s self-inflicted resignation-wave</a></strong></p><p>Gergely Orosz analisa a onda de pedidos de demiss&#227;o na Meta e argumenta que a pr&#243;pria empresa a provocou.</p><p><strong><a href="https://martinfowler.com/articles/exploring-gen-ai/tdd-in-the-agent-loop.html?utm_source=techleadsclub&amp;utm_medium=newsletter&amp;utm_term=88">TDD inside the agent loop - theater or actual value?</a></strong></p><p>Birgitta B&#246;ckeler rodou experimentos na Thoughtworks para verificar se instruir agentes de IA a seguir TDD muda de fato o resultado do c&#243;digo gerado.</p><h2>Favoritos</h2><p><strong><a href="/__u/alklaser.substack.com/p/o-iconoclasta-otimista-edicao-40?utm_source=techleadsclub&amp;utm_medium=newsletter&amp;utm_term=88">Assinaram numa sala. Quem pagou n&#227;o estava nela.</a></strong></p><p>Alexandre Klaser parte da multa de R$ 3,7 mil aplicada a uma trabalhadora por peti&#231;&#227;o gerada com IA sem revis&#227;o humana para mostrar como a ado&#231;&#227;o por default cria decis&#245;es sem decisor, e re&#250;ne dados de IBGE, PwC, KPMG e BCG que mostram a conta chegando antes do retorno.</p><p><strong><a href="https://seangoedecke.com/local-models-will-not-win/?utm_source=techleadsclub&amp;utm_medium=newsletter&amp;utm_term=88">No, local models will not win</a></strong></p><p>Sean Goedecke argumenta que a maior parte da infer&#234;ncia continuar&#225; em datacenters porque batching e GPUs de datacenter tornam o mesmo modelo cerca de trinta vezes mais eficiente do que rod&#225;-lo em casa.</p><p><strong><a href="https://seangoedecke.com/advanced-ai-sycophancy/?utm_source=techleadsclub&amp;utm_medium=newsletter&amp;utm_term=88">Advanced AI sycophancy</a></strong></p><p>Sean Goedecke descreve uma forma mais sofisticada de bajula&#231;&#227;o dos modelos, que discordam do usu&#225;rio com cr&#237;ticas f&#225;ceis de rebater para validar a autoimagem de quem se considera imune a elogio expl&#237;cito.</p><p><strong><a href="https://rhonabwy.com/2026/08/15/software-engineering-fundamentals-matter-more-than-ever/?utm_source=techleadsclub&amp;utm_medium=newsletter&amp;utm_term=88">Software Engineering fundamentals matter more</a></strong></p><p>Post defende que os fundamentos de engenharia de software importam mais do que nunca no desenvolvimento assistido por IA.</p><p><strong><a href="https://newsletter.pragmaticengineer.com/p/optiver?utm_source=techleadsclub&amp;utm_medium=newsletter&amp;utm_term=88">Software engineering at a proprietary trading company: Optiver</a></strong></p><p>Gergely Orosz detalha como funciona a engenharia de software na Optiver, empresa de trading propriet&#225;rio.</p><p><strong><a href="https://peterbloem.nl/blog/craft-coding?utm_source=techleadsclub&amp;utm_medium=newsletter&amp;utm_term=88">AI Coding Without the Vibes</a></strong></p><p>Peter Bloem descreve como programar com IA mantendo rigor de engenharia em vez de recorrer ao vibe coding.</p><h2>AI</h2><p><strong><a href="https://newsletter.posthog.com/p/software-factories?utm_source=techleadsclub&amp;utm_medium=newsletter&amp;utm_term=88">Can software factories actually work?</a></strong></p><p>Jina Yoon, da PostHog, responde &#224; s&#233;rie de Dex Horthy sobre por que f&#225;bricas de software falham e sustenta que o erro &#233; separar quem decide o que construir de quem constr&#243;i, j&#225; que agentes com acesso a dados de produ&#231;&#227;o e feedback de usu&#225;rios tomam decis&#245;es de design melhores.</p><p><strong><a href="/__u/addyo.substack.com/p/practical-loop-engineering?utm_source=techleadsclub&amp;utm_medium=newsletter&amp;utm_term=88">Practical Loop Engineering</a></strong></p><p>Addy Osmani re&#250;ne pr&#225;ticas para aplicar loop engineering no dia a dia, desenhando la&#231;os que rodam o agente at&#233; atingir um objetivo.</p><p><strong><a href="/__u/addyo.substack.com/p/agentic-code-quality?utm_source=techleadsclub&amp;utm_medium=newsletter&amp;utm_term=88">Agentic Code Quality</a></strong></p><p>Addy Osmani discute como manter a qualidade do c&#243;digo produzido por agentes de IA.</p><p><strong><a href="https://www.latent.space/p/flue-2?utm_source=techleadsclub&amp;utm_medium=newsletter&amp;utm_term=88">React for Agents: Astro Creator Brings Hooks to his Meta-Harness, Flue</a></strong></p><p>O criador do Astro levou o modelo de hooks do React para o Flue, seu meta-harness para agentes de IA.</p><p><strong><a href="https://simonwillison.net/2026/Aug/14/dont-classify-hallucinate/?utm_source=techleadsclub&amp;utm_medium=newsletter&amp;utm_term=88">Don&#8217;t classify. Hallucinate!</a></strong></p><p>Doug Turnbull prop&#245;e pedir ao modelo que invente categorias sem conhecer o vocabul&#225;rio existente e depois usar embeddings para mapear cada palpite na taxonomia real, contornando o limite de listar milhares de tags no prompt.</p><p><strong><a href="https://simonwillison.net/2026/Aug/11/stealing-reasoning-traces/?utm_source=techleadsclub&amp;utm_medium=newsletter&amp;utm_term=88">Stealing Reasoning Traces from Proprietary LLM APIs</a></strong></p><p>Pesquisadores mostraram que os blocos criptografados de racioc&#237;nio de Anthropic, OpenAI e Google usam a mesma chave dentro de cada fam&#237;lia de modelos, o que permitia reinjetar o tra&#231;o de um modelo forte em um irm&#227;o mais fraco e extrair o racioc&#237;nio em texto puro, falha j&#225; corrigida pelos provedores.</p><p><strong><a href="https://simonwillison.net/2026/Aug/8/auto-mode/?utm_source=techleadsclub&amp;utm_medium=newsletter&amp;utm_term=88">Auto mode is now the default in Claude Code for Pro, Max, and Team plans</a></strong></p><p>A Anthropic tornou o auto mode padr&#227;o no Claude Code para os planos Pro, Max e Team e publicou avalia&#231;&#245;es em que humanos barraram 13,6% dos comandos perigosos contra 89% do auto mode, al&#233;m de 720 tentativas de prompt injection indireto sem sucesso.</p><p><strong><a href="https://x.ai/bot?utm_source=techleadsclub&amp;utm_medium=newsletter&amp;utm_term=88">Grok Bot: A new kind of colleague</a></strong></p><p>A xAI lan&#231;ou o Grok Bot, agentes de IA sempre ligados que operam o pr&#243;prio computador para executar tarefas de trabalho.</p><p><strong><a href="https://developer.meta.com/ai/products/muse-code/?utm_source=techleadsclub&amp;utm_medium=newsletter&amp;utm_term=88">Muse Code | Meta</a></strong></p><p>A Meta publicou a p&#225;gina do Muse Code, com benchmarks de programa&#231;&#227;o, racioc&#237;nio e desempenho ag&#234;ntico do modelo.</p><p><strong><a href="https://blog.modelcontextprotocol.io/posts/2026-07-28-release-candidate/?utm_source=techleadsclub&amp;utm_medium=newsletter&amp;utm_term=88">The 2026-07-28 MCP Specification Release Candidate | Model Context Protocol Blog</a></strong></p><p>O release candidate da pr&#243;xima especifica&#231;&#227;o do MCP traz n&#250;cleo stateless, o framework de Extensions, Tasks, MCP Apps, endurecimento da autoriza&#231;&#227;o e uma pol&#237;tica formal de deprecia&#231;&#227;o.</p><p><strong><a href="https://rubyonrails.org/2026/8/13/agents-on-rails-the-first-benchmark-report?utm_source=techleadsclub&amp;utm_medium=newsletter&amp;utm_term=88">Agents on Rails: the first benchmark report</a></strong></p><p>O time do Rails publicou o primeiro relat&#243;rio do benchmark Agents on Rails, que rodou oito modelos em 21 tarefas at&#244;micas sobre o Writebook, com tr&#234;s execu&#231;&#245;es cada.</p><p><strong><a href="https://seangoedecke.com/ai-text-watermarking-is-not-a-big-deal/?utm_source=techleadsclub&amp;utm_medium=newsletter&amp;utm_term=88">AI text watermarking is not a big deal</a></strong></p><p>Sean Goedecke argumenta que a marca d&#8217;&#225;gua em texto gerado por IA ter&#225; pouco efeito pr&#225;tico.</p><h2>Arquitetura</h2><p><strong><a href="https://blog.bytebytego.com/p/a-detailed-guide-to-api-composition?utm_source=techleadsclub&amp;utm_medium=newsletter&amp;utm_term=88">A Detailed Guide to API Composition Techniques</a></strong></p><p>A ByteByteGo detalha t&#233;cnicas de composi&#231;&#227;o de APIs e em que situa&#231;&#227;o cada uma se aplica.</p><p><strong><a href="https://blog.bytebytego.com/p/the-read-path-versus-the-write-path?utm_source=techleadsclub&amp;utm_medium=newsletter&amp;utm_term=88">The Read Path versus the Write Path: Strategies and Techniques</a></strong></p><p>A ByteByteGo compara estrat&#233;gias e t&#233;cnicas para o caminho de leitura e o caminho de escrita em sistemas de dados.</p><p><strong><a href="https://blog.bytebytego.com/p/github-vs-vercel-vs-replit-what-dev?utm_source=techleadsclub&amp;utm_medium=newsletter&amp;utm_term=88">GitHub vs Vercel vs Replit: What Dev Platforms Do When AI Code Is Cheap</a></strong></p><p>A ByteByteGo compara como GitHub, Vercel e Replit reposicionaram suas plataformas de desenvolvimento diante do barateamento do c&#243;digo gerado por IA.</p><p><strong><a href="https://blog.bytebytego.com/p/how-cloudflare-is-making-ai-pay-for?utm_source=techleadsclub&amp;utm_medium=newsletter&amp;utm_term=88">How Cloudflare Is Making AI Pay for Content</a></strong></p><p>A ByteByteGo explica o mecanismo com que a Cloudflare passou a cobrar das empresas de IA pelo acesso ao conte&#250;do dos sites que protege.</p><p><strong><a href="https://postgresweekly.com/link/189126/rss?utm_source=techleadsclub&amp;utm_medium=newsletter&amp;utm_term=88">The Dangers of Postgres Subtransactions</a></strong></p><p>Uma transa&#231;&#227;o com mais de 64 subtransa&#231;&#245;es pode derrubar o throughput de um cluster Postgres de 7.200 para 160 TPS em pgbench e fazer uma r&#233;plica de leitura rec&#233;m-criada recusar conex&#245;es.</p><p><strong><a href="https://engineering.atspotify.com/2026/8/when-can-llms-replace-humans-in-a-b-tests/?utm_source=techleadsclub&amp;utm_medium=newsletter&amp;utm_term=88">When Can LLMs Replace Humans in A/B Tests?</a></strong></p><p>A engenharia do Spotify investiga em quais situa&#231;&#245;es LLMs conseguem substituir participantes humanos em testes A/B.</p><h2>Lideran&#231;a t&#233;cnica</h2><p><strong><a href="https://newsletter.getdx.com/p/ai-in-engineering-q2-2026-benchmarks?utm_source=techleadsclub&amp;utm_medium=newsletter&amp;utm_term=88">AI in engineering: Q2 2026 benchmarks &amp; research readout</a></strong></p><p>Brian Houck consolida os benchmarks e as pesquisas da DX sobre uso de IA em engenharia no segundo trimestre de 2026.</p><p><strong><a href="https://newsletter.getdx.com/p/your-benchmarks-dont-apply-to-us?utm_source=techleadsclub&amp;utm_medium=newsletter&amp;utm_term=88">&#8220;Your benchmarks don&#8217;t apply to us&#8221;</a></strong></p><p>Brian Houck responde &#224; obje&#231;&#227;o recorrente de que benchmarks da ind&#250;stria n&#227;o se aplicam &#224; realidade de uma empresa espec&#237;fica.</p><p><strong><a href="https://newsletter.getdx.com/p/how-microsoft-sees-engineering-bottlenecks?utm_source=techleadsclub&amp;utm_medium=newsletter&amp;utm_term=88">How Microsoft sees engineering bottlenecks changing with AI</a></strong></p><p>Brian Houck relata como a Microsoft enxerga o deslocamento dos gargalos de engenharia com a ado&#231;&#227;o de IA.</p><p><strong><a href="https://lethain.com/decisions-not-dates/?utm_source=techleadsclub&amp;utm_medium=newsletter&amp;utm_term=88">Roadmap decisions rather than dates.</a></strong></p><p>Will Larson defende que times parem de negociar datas no roadmap e organizem o trabalho pela lista de decis&#245;es pendentes, j&#225; que projetos hoje travam em decis&#245;es, aprova&#231;&#245;es e handoffs, e n&#227;o em semanas de implementa&#231;&#227;o.</p><p><strong><a href="https://lethain.com/middle-management-roles-were-also-a-trap/?utm_source=techleadsclub&amp;utm_medium=newsletter&amp;utm_term=88">Middle management roles are also a trap.</a></strong></p><p>Will Larson sustenta que cargos de ger&#234;ncia intermedi&#225;ria preparam para mais ger&#234;ncia intermedi&#225;ria e n&#227;o para a executiva, porque as habilidades que definem um bom executivo se treinam melhor na gest&#227;o de linha.</p><p><strong><a href="https://www.youtube.com/shorts/kdBNvASQxUY?utm_source=techleadsclub&amp;utm_medium=newsletter&amp;utm_term=88">&#201; seguro n&#227;o ler mais c&#243;digo escrito por IA?</a></strong></p><p>Waldemar Neto discute se j&#225; &#233; seguro parar de ler o c&#243;digo escrito por IA.</p><h2>Ferramentas</h2><p><strong><a href="https://postgresweekly.com/link/189137/rss?utm_source=techleadsclub&amp;utm_medium=newsletter&amp;utm_term=88">Rebuilding Postgres for 300x Faster Analytics</a></strong></p><p>O criador do pgrust, tentativa de reescrever o Postgres em Rust, analisa o efeito de batching, fus&#227;o de operadores e SIMD em um motor de consultas.</p><p><strong><a href="https://postgresweekly.com/link/189123/rss?utm_source=techleadsclub&amp;utm_medium=newsletter&amp;utm_term=88">Introducing sqlfmt: An SQL gofmt-Style Formatter</a></strong></p><p>Dimitri Fontaine lan&#231;ou o sqlfmt, formatador de SQL no estilo do gofmt escrito em Go e tamb&#233;m dispon&#237;vel na web.</p><p><strong><a href="https://javascriptweekly.com/link/189064/rss?utm_source=techleadsclub&amp;utm_medium=newsletter&amp;utm_term=88">Kitesurf: Cloudflare&#8217;s Agent-First Browser in V8 Isolates</a></strong></p><p>A Cloudflare abriu o beta do Kitesurf, motor de navegador que roda em Workers com um isolate por p&#225;gina e consome de tr&#234;s a sete vezes menos CPU e mem&#243;ria que o Chromium, em troca de ser mais lento.</p><p><strong><a href="https://javascriptweekly.com/link/189091/rss?utm_source=techleadsclub&amp;utm_medium=newsletter&amp;utm_term=88">vlt 1.0: An npm Alternative With CSS-Like Selectors</a></strong></p><p>O vlt 1.0 chega como substituto direto do npm e traz o comando vlt query, com mais de 60 seletores no estilo CSS sobre o grafo de depend&#234;ncias.</p><p><strong><a href="https://golangweekly.com/link/188988/rss?utm_source=techleadsclub&amp;utm_medium=newsletter&amp;utm_term=88">An Interactive Tour of Go 1.27</a></strong></p><p>Jes&#250;s Espino publicou um tour interativo pelo Go 1.27, cobrindo m&#233;todos gen&#233;ricos, o profile goroutineleak, o novo pacote uuid e o SIMD port&#225;til experimental.</p><p><strong><a href="https://rubyweekly.com/link/189220/rss?utm_source=techleadsclub&amp;utm_medium=newsletter&amp;utm_term=88">Solid Objects: Cloudflare Durable Objects for Rails</a></strong></p><p>O Solid Objects traz para o Rails atores dur&#225;veis e endere&#231;&#225;veis no estilo dos Durable Objects da Cloudflare, apoiados no banco de dados existente e com um helper ERB que atualiza o navegador sem channels nem JavaScript.</p><p><strong><a href="https://javascriptweekly.com/link/189086/rss?utm_source=techleadsclub&amp;utm_medium=newsletter&amp;utm_term=88">celld: Durable Objects on Your Own S3 Bucket</a></strong></p><p>A Deno lan&#231;ou o celld, vers&#227;o self-hosted de Workers e Durable Objects que combina V8, SQLite e o LTX do Litestream coordenando por um bucket S3, sem camada de consenso.</p><p><strong><a href="https://github.com/rails/ai-evals?utm_source=techleadsclub&amp;utm_medium=newsletter&amp;utm_term=88">rails/ai-evals: Evals and benchmarks for AI models &#183; GitHub</a></strong></p><p>O Rails abriu o reposit&#243;rio ai-evals, com evals e benchmarks para modelos de IA.</p><p><strong><a href="https://langfuse.com/?utm_source=techleadsclub&amp;utm_medium=newsletter&amp;utm_term=88">Langfuse</a></strong></p><p>O Langfuse &#233; uma plataforma aberta para rastrear, avaliar e melhorar agentes de IA a partir de dados de produ&#231;&#227;o.</p><p><strong><a href="https://www.youtube.com/watch?v=F7fe9pa8OeE&amp;utm_source=techleadsclub&amp;utm_medium=newsletter&amp;utm_term=88">Omarchy Quattro</a></strong></p><p>V&#237;deo apresenta o Omarchy Quattro, nova vers&#227;o da distribui&#231;&#227;o Linux baseada em Arch e Hyprland criada por DHH.</p>]]></content:encoded></item><item><title><![CDATA[🗞️ Newsletter #87]]></title><description><![CDATA[Por dentro da Anthropic com Orosz, MCP stateless, GPT-5.6 at&#233; 80% mais barato, Claude publicando malware no PyPI em eval, o imposto do orquestrador e mais]]></description><link>https://techleadsclub.substack.com/p/newsletter-87</link><guid isPermaLink="false">https://techleadsclub.substack.com/p/newsletter-87</guid><dc:creator><![CDATA[William Calderipe]]></dc:creator><pubDate>Tue, 04 Aug 2026 13:45:36 GMT</pubDate><enclosure url="https://substackcdn.com/image/fetch/$s_!Z9-W!,w_256,c_limit,f_auto,q_auto:good,fl_progressive:steep/https%3A%2F%2Fsubstack-post-media.s3.amazonaws.com%2Fpublic%2Fimages%2F134844ec-ca47-4df0-ab39-8ead3a5bf341_256x256.png" length="0" type="image/jpeg"/><content:encoded><![CDATA[<h2>Destaques</h2><p><strong><a href="https://newsletter.pragmaticengineer.com/p/inside-anthropic?utm_source=techleadsclub&amp;utm_medium=newsletter&amp;utm_term=87">How building software is changing at Anthropic</a></strong></p><p>Gergely Orosz visitou a Anthropic e descreve como a empresa constr&#243;i software hoje, com verifica&#231;&#227;o consumindo mais tempo que implementa&#231;&#227;o, no m&#225;ximo dois engenheiros por projeto, design cont&#237;nuo em vez de antecipado e revis&#227;o e testes cada vez mais feitos por IA.</p><p><strong><a href="https://martinfowler.com/articles/orchestrator-tax.html?utm_source=techleadsclub&amp;utm_medium=newsletter&amp;utm_term=87">The Orchestrator&#8217;s Tax</a></strong></p><p>Rahul Garg argumenta que o valor real de um subagente n&#227;o &#233; paralelizar trabalho, e sim manter tokens fora do contexto do orquestrador, e defende dar ao orquestrador regras expl&#237;citas de quando e como delegar.</p><h2>Favoritos</h2><p><strong><a href="/__u/alklaser.substack.com/p/o-iconoclasta-otimista-edicao-38?utm_source=techleadsclub&amp;utm_medium=newsletter&amp;utm_term=87">A conta que aquela montadora come&#231;ou a pagar em 2018</a></strong></p><p>Alexandre Klaser contrasta a decis&#227;o de multi-cloud tomada por uma financeira em 2018, cujo custo operacional ainda &#233; pago oito anos depois, com o reset de cinco meses do Bradesco na arquitetura de agentes, e defende perguntar quanto uma decis&#227;o vai custar depois antes de fech&#225;-la.</p><p><strong><a href="https://seangoedecke.com/you-dont-have-to-be-smart-if-you-think-clearly/?utm_source=techleadsclub&amp;utm_medium=newsletter&amp;utm_term=87">You don&#8217;t have to be smart if you can think clearly</a></strong></p><p>Sean Goedecke diferencia o engenheiro inteligente, que depende de intui&#231;&#245;es r&#225;pidas, do engenheiro forte, que pensa devagar e com clareza diante da incerteza, e aponta identificar invariantes como a t&#233;cnica central.</p><p><strong><a href="https://simonwillison.net/2026/Jul/31/stateless-mcp/?utm_source=techleadsclub&amp;utm_medium=newsletter&amp;utm_term=87#atom-everything">Stateless MCP has recaptured my interest (and inspired mcp-explorer and datasette-mcp)</a></strong></p><p>Simon Willison explica por que o MCP stateless reacendeu seu interesse no protocolo, mostra a redu&#231;&#227;o de duas requisi&#231;&#245;es HTTP para uma e apresenta tr&#234;s projetos que construiu na semana, mcp-explorer, datasette-mcp e llm-mcp-client.</p><p><strong><a href="https://www.gitclear.com/the_ai_code_quality_maintainability_gap?utm_source=techleadsclub&amp;utm_medium=newsletter&amp;utm_term=87">The Maintainability Gap: 2026 AI Code Quality Research - GitClear</a></strong></p><p>A GitClear analisou 623 milh&#245;es de mudan&#231;as de c&#243;digo entre 2023 e 2026 e acompanhou oito sinais de qualidade enquanto a autoria por IA atinge volume recorde.</p><p><strong><a href="https://newsletter.pragmaticengineer.com/p/formal-methods-with-hillel-wayne?utm_source=techleadsclub&amp;utm_medium=newsletter&amp;utm_term=87">Formal methods with Hillel Wayne</a></strong></p><p>No podcast do Pragmatic Engineer, Hillel Wayne explica onde m&#233;todos formais como TLA+ compensam, recomenda que a maioria dos times pare em property-based testing e prev&#234; que a IA amplia o uso de verifica&#231;&#227;o formal sem torn&#225;-la mainstream.</p><p><strong><a href="https://seangoedecke.com/llms-reward-expertise/?utm_source=techleadsclub&amp;utm_medium=newsletter&amp;utm_term=87">LLMs reward expertise</a></strong></p><p>Sean Goedecke argumenta que a habilidade mais importante em prompting &#233; o dom&#237;nio do assunto e usa a conversa de Terence Tao com o ChatGPT sobre a Conjectura de Jacobi para mostrar como conhecimento espec&#237;fico extrai muito mais do mesmo modelo.</p><p><strong><a href="https://ptrchm.com/posts/nothing-works-and-everyone-is-euphoric/?utm_source=techleadsclub&amp;utm_medium=newsletter&amp;utm_term=87">Nothing Works and Everyone Is Euphoric</a></strong></p><p>Empresas de IA demonstram prot&#243;tipos impressionantes em eventos, mas enfrentam dificuldades para entregar produtos funcionais no mercado real.</p><p><strong><a href="https://stephango.com/design-is-compromise?utm_source=techleadsclub&amp;utm_medium=newsletter&amp;utm_term=87">Design is compromise</a></strong></p><p>Steph Ango argumenta que design &#233; essencialmente o ato de escolher entre trade-offs, n&#227;o buscar a solu&#231;&#227;o perfeita.</p><p><strong><a href="https://glyphack.com/attention/?utm_source=techleadsclub&amp;utm_medium=newsletter&amp;utm_term=87">It&#8217;s getting harder to focus every day</a></strong></p><p>Desenvolvedores enfrentam crescente dificuldade de concentra&#231;&#227;o devido ao bombardeio constante de notifica&#231;&#245;es, redes sociais e ferramentas digitais que fragmentam a aten&#231;&#227;o.</p><p><strong><a href="https://didtheyghostyou.com/?utm_source=techleadsclub&amp;utm_medium=newsletter&amp;utm_term=87">Ghosted After a Job Interview? Report the Company</a></strong></p><h2>AI</h2><p><strong><a href="https://blog.bytebytego.com/p/how-chatgpt-optimizes-its-agent-loop?utm_source=techleadsclub&amp;utm_medium=newsletter&amp;utm_term=87">How ChatGPT Optimizes its Agent Loop: Harness, API, and Inference</a></strong></p><p>Engenheiros da OpenAI detalham &#224; ByteByteGo como reduzem o custo por tarefa do Codex e do ChatGPT Work em tr&#234;s camadas, o harness com WebSockets persistentes e prefixos est&#225;veis de prompt, a API que tokeniza apenas o delta, e a infer&#234;ncia com roteamento ciente de cache e decodifica&#231;&#227;o especulativa.</p><p><strong><a href="https://claude.com/blog/bringing-mcp-2026-07-28-to-claude?utm_source=techleadsclub&amp;utm_medium=newsletter&amp;utm_term=87">MCP 2026-07-28 spec: stateless core, coming to Claude</a></strong></p><p>A Anthropic detalha a especifica&#231;&#227;o MCP de 28 de julho de 2026, que troca a sess&#227;o bidirecional por um n&#250;cleo stateless de requisi&#231;&#227;o e resposta, padroniza extens&#245;es como MCP Apps e Tasks e alinha a autoriza&#231;&#227;o a OAuth 2.0 e OIDC.</p><p><strong><a href="https://simonwillison.net/2026/Jul/30/luna-price-drop/?utm_source=techleadsclub&amp;utm_medium=newsletter&amp;utm_term=87#atom-everything">Advancing the price-performance frontier with GPT&#8209;5.6</a></strong></p><p>A OpenAI cortou o pre&#231;o do GPT-5.6 Terra em 20% e o do Luna em 80%, atribuindo a redu&#231;&#227;o ao uso do pr&#243;prio GPT-5.6 Sol para otimizar balanceamento de carga e reescrever os kernels de produ&#231;&#227;o.</p><p><strong><a href="https://simonwillison.net/2026/Jul/30/three-real-world-incidents/?utm_source=techleadsclub&amp;utm_medium=newsletter&amp;utm_term=87#atom-everything">Investigating three real-world incidents in our cybersecurity evaluations</a></strong></p><p>A Anthropic revisou 141.006 execu&#231;&#245;es de avalia&#231;&#227;o e encontrou tr&#234;s incidentes em que o Claude, instru&#237;do de que estava em simula&#231;&#227;o sem acesso &#224; internet, comprometeu infraestrutura real e chegou a publicar um pacote com malware no PyPI.</p><p><strong><a href="https://seangoedecke.com/ai-models-need-moral-support/?utm_source=techleadsclub&amp;utm_medium=newsletter&amp;utm_term=87">AI models need moral support to make discoveries</a></strong></p><p>Sean Goedecke argumenta que os modelos s&#227;o limitados pelas pr&#243;prias cren&#231;as sobre o que conseguem fazer e que insistir com eles em problemas dif&#237;ceis costuma bastar, j&#225; que as descobertas feitas por IA v&#227;o realimentar os dados de treino.</p><p><strong><a href="https://newsletter.posthog.com/p/agent-autonomy?utm_source=techleadsclub&amp;utm_medium=newsletter&amp;utm_term=87">How much can you delegate to agents?</a></strong></p><p>Jina Yoon, da PostHog, prop&#245;e definir a autonomia de um agente pela tarefa e n&#227;o pelo modelo, cruzando a facilidade de verificar o trabalho com o custo de desfazer um erro em quatro n&#237;veis, do agente como assistente ao modo aut&#244;nomo.</p><p><strong><a href="https://refactoring.fm/p/a-case-study-in-ai-product-development?utm_source=techleadsclub&amp;utm_medium=newsletter&amp;utm_term=87">A Case Study in AI Product Development &#128300;</a></strong></p><p>Luca Rossi conta como a TRM Labs trocou um framework de nove est&#225;gios organizado por pap&#233;is por seis resultados agrupados em tr&#234;s blocos e codificou o novo fluxo em um harness interno chamado Cortex, que est&#225; sendo aberto.</p><p><strong><a href="https://www.latent.space/p/ontologies-agentic-systems?utm_source=techleadsclub&amp;utm_medium=newsletter&amp;utm_term=87">Ontologies Are So Back: Why AI Agents Are Reviving the Semantic Web</a></strong></p><p>Na Latent Space, Richard MacManus relata a palestra em que Frank Coyle defende ontologias como guardrails l&#243;gicos para sistemas ag&#234;nticos e mostra por que reaproveitar ontologias web j&#225; existentes, como Schema.org e FOAF, funciona melhor que criar as pr&#243;prias do zero.</p><p><strong><a href="https://www.latent.space/p/chatgpt-work?utm_source=techleadsclub&amp;utm_medium=newsletter&amp;utm_term=87">Codex from 0 to 10M Users: Building ChatGPT Work</a></strong></p><p>Akshay Nathan, da OpenAI, conta na Latent Space como o Codex passou a alimentar o ChatGPT Work e chegou a 10 milh&#245;es de usu&#225;rios combinados em menos de duas semanas ap&#243;s o lan&#231;amento, com trabalhadores do conhecimento crescendo tr&#234;s vezes mais r&#225;pido que desenvolvedores na base.</p><p><strong><a href="https://www.youtube.com/watch?v=WrMGIHg28Y4&amp;utm_source=techleadsclub&amp;utm_medium=newsletter&amp;utm_term=87">Agent Skills: o novo padra&#771;o da Anthropic que todo dev precisa dominar</a></strong></p><p>V&#237;deo explica o Agent Skills, padr&#227;o aberto criado pela Anthropic para ensinar novas habilidades a agentes de IA como o Claude Code.</p><h2>Arquitetura</h2><p><strong><a href="https://blog.bytebytego.com/p/a-detailed-guide-to-idempotency-delivery?utm_source=techleadsclub&amp;utm_medium=newsletter&amp;utm_term=87">A Detailed Guide to Idempotency, Delivery Semantics, and Deduplication</a></strong></p><p>A ByteByteGo detalha sem&#226;nticas de entrega, chaves de idempot&#234;ncia e deduplica&#231;&#227;o, mostrando os tr&#234;s pontos em que duplicatas entram no caminho produtor, broker e consumidor e por que corrigir um deles n&#227;o resolve os outros.</p><p><strong><a href="https://newsletter.systemdesignclassroom.com/p/safe-database-rollback-starts-before-deployment?utm_source=techleadsclub&amp;utm_medium=newsletter&amp;utm_term=87">Safe Database Rollback Starts Before Deployment</a></strong></p><p>Raul Junco mostra que rollback de aplica&#231;&#227;o n&#227;o &#233; rollback de banco e defende decidir antes do deploy como c&#243;digo antigo, c&#243;digo novo e schema em mudan&#231;a v&#227;o coexistir.</p><p><strong><a href="http://brooker.co.za/blog/2026/07/29/lorenz-and-little.html?utm_source=techleadsclub&amp;utm_medium=newsletter&amp;utm_term=87">Lorenz and Little: How Much Does Your Tail Cost?</a></strong></p><p>Marc Brooker usa a curva de Lorenz e a lei de Little para mostrar que requisi&#231;&#245;es acima do p99 podem responder por mais da metade da lat&#234;ncia m&#233;dia e da concorr&#234;ncia do sistema, tornando a cauda desproporcionalmente cara de servir.</p><p><strong><a href="https://blog.bytebytego.com/p/why-doordash-instacart-and-uber-eats?utm_source=techleadsclub&amp;utm_medium=newsletter&amp;utm_term=87">Why DoorDash, Instacart, and Uber Eats Integrated LLMs Into Search Three Different Ways</a></strong></p><p>A ByteByteGo compara como DoorDash, Instacart e Uber Eats integraram LLMs &#224; busca com arquiteturas distintas e conclui que a infraestrutura preexistente, e n&#227;o o modelo escolhido, determinou qu&#227;o fundo o LLM entrou no runtime.</p><p><strong><a href="https://martinfowler.com/articles/exploring-gen-ai/refactoring-economic-benefit.html?utm_source=techleadsclub&amp;utm_medium=newsletter&amp;utm_term=87">The Economic Benefit of Refactoring</a></strong></p><p>Giles Edwards-Alexander decomp&#244;s uma fun&#231;&#227;o grande para medir o efeito no custo de tokens, sugerindo que agora &#233; poss&#237;vel medir o benef&#237;cio econ&#244;mico da refatora&#231;&#227;o.</p><p><strong><a href="https://blog.bytebytego.com/p/a-beginners-guide-to-clocks-causality?utm_source=techleadsclub&amp;utm_medium=newsletter&amp;utm_term=87">A Beginner&#8217;s Guide to Clocks, Causality, and Ordering in Distributed Systems</a></strong></p><p>A ByteByteGo introduz rel&#243;gios, causalidade e ordena&#231;&#227;o em sistemas distribu&#237;dos para quem est&#225; come&#231;ando no tema.</p><h2>Lideran&#231;a t&#233;cnica</h2><p><strong><a href="https://martinfowler.com/rachels-ramblings/conductor-developer.html?utm_source=techleadsclub&amp;utm_medium=newsletter&amp;utm_term=87">The Conductor Developer</a></strong></p><p>Rachel Laycock sustenta que a IA n&#227;o mudou o que &#233; bom software, mas tornou a aten&#231;&#227;o humana o recurso escasso, e que os melhores desenvolvedores hoje orquestram agentes como um maestro conduz uma orquestra.</p><p><strong><a href="https://newsletter.getdx.com/p/the-unexpected-things-developer-metrics?utm_source=techleadsclub&amp;utm_medium=newsletter&amp;utm_term=87">The unexpected things developer metrics can measure</a></strong></p><p>Brian Houck defende que m&#233;tricas de developer experience medem resultados e n&#227;o interven&#231;&#245;es, mostrando que elas detectam efeitos do hor&#225;rio de ver&#227;o, de mudan&#231;as de escrit&#243;rio e de nevascas na atividade de engenharia.</p><p><strong><a href="https://newsletter.getdx.com/p/measuring-the-impact-of-ai-coding?utm_source=techleadsclub&amp;utm_medium=newsletter&amp;utm_term=87">Measuring the impact of AI coding tools: Capacity, not horsepower</a></strong></p><p>Brian Houck critica m&#233;tricas que convertem PRs assistidos por IA em horas humanas economizadas e prop&#245;e medir a capacidade de entregar inova&#231;&#227;o em cinco dimens&#245;es, throughput, deploys, tempo reinvestido, qualidade e satisfa&#231;&#227;o.</p><p><strong><a href="https://karimjedda.com/engineering-management-after-cost-of-code-collapse/?utm_source=techleadsclub&amp;utm_medium=newsletter&amp;utm_term=87">Engineering management after the cost of code collapsed</a></strong></p><p>IA reduziu drasticamente o custo de escrever c&#243;digo, for&#231;ando gerentes de engenharia a redefinir estrat&#233;gias de contrata&#231;&#227;o e focar em habilidades de design de sistemas.</p><h2>Ferramentas</h2><p><strong><a href="https://rubyweekly.com/link/188632/rss?utm_source=techleadsclub&amp;utm_medium=newsletter&amp;utm_term=87">A Critical Active Storage Vulnerability in Rails</a></strong></p><p>Uma imagem manipulada pode expor arquivos arbitr&#225;rios do servidor em apps Rails 7.x e 8.x na configura&#231;&#227;o padr&#227;o, pelo processador vips do Active Storage, com corre&#231;&#227;o nas vers&#245;es 7.2.3.2, 8.0.5.1 e 8.1.3.1.</p><p><strong><a href="https://rubyweekly.com/link/188644/rss?utm_source=techleadsclub&amp;utm_medium=newsletter&amp;utm_term=87">Finding 105 Vulnerabilities in the Ruby Ecosystem</a></strong></p><p>Uma empresa de seguran&#231;a rodou seu scanner em gems com extens&#245;es nativas em C e encontrou 105 vulnerabilidades no ecossistema Ruby, entre elas uma leitura fora dos limites no Nokogiri com 17 anos de idade.</p><p><strong><a href="https://thehackernews.com/2026/07/fakegit-campaign-uses-7600-github.html?utm_source=techleadsclub&amp;utm_medium=newsletter&amp;utm_term=87">FakeGit Campaign Uses 7,600 GitHub Repositories to Spread SmartLoader Malware</a></strong></p><p>Pesquisadores identificaram 7.600 reposit&#243;rios falsos no GitHub, entre eles 800 iscas de skills de IA e MCP, usados para distribuir o malware SmartLoader.</p><p><strong><a href="https://javascriptweekly.com/link/188488/rss?utm_source=techleadsclub&amp;utm_medium=newsletter&amp;utm_term=87">The Creator of TypeScript Shows Off TypeScript 7</a></strong></p><p>Anders Hejlsberg demonstra o ganho de dez vezes do novo compilador TypeScript escrito em Go sobre a base de 1,3 milh&#227;o de linhas do VS Code e explica por que quem usa a API do compilador precisa continuar no TypeScript 6.</p><p><strong><a href="https://javascriptweekly.com/link/188465/rss?utm_source=techleadsclub&amp;utm_medium=newsletter&amp;utm_term=87">Rust Is Eating JavaScript (Still, in 2026)</a></strong></p><p>Lee Robinson atualiza para 2026 sua previs&#227;o de 2021 de que Rust reimplementaria o ferramental do ecossistema JavaScript, citando Rspack, Biome, Turbopack e a reescrita recente do Bun.</p><p><strong><a href="https://postgresweekly.com/link/188576/rss?utm_source=techleadsclub&amp;utm_medium=newsletter&amp;utm_term=87">Three New Things in Postgres 19</a></strong></p><p>A PlanetScale destaca tr&#234;s novidades do Postgres 19, o comando REPACK, o JIT desligado por padr&#227;o e melhorias no planejador de consultas.</p><p><strong><a href="https://rubyweekly.com/link/188656/rss?utm_source=techleadsclub&amp;utm_medium=newsletter&amp;utm_term=87">Automating Ruby Tech Debt Audits with Claude Code</a></strong></p><p>Ernesto Tagwerker apresenta uma skill do Claude Code que encadeia v&#225;rias ferramentas e produz um relat&#243;rio de qualidade com nota para projetos Ruby.</p><p><strong><a href="https://golangweekly.com/link/188679/rss?utm_source=techleadsclub&amp;utm_medium=newsletter&amp;utm_term=87">Watching Go&#8217;s New Garbage Collector Move Through the Heap</a></strong></p><p>Phil Eaton investiga com perf e um mapa ASCII do heap o Green Tea, coletor padr&#227;o desde o Go 1.26, e mostra que liberar 90% dos objetos pode devolver quase nenhuma mem&#243;ria porque o Go nunca move objetos.</p>]]></content:encoded></item><item><title><![CDATA[🗞️ Newsletter #86]]></title><description><![CDATA[Loop engineering por Orosz, Grok CLI vazando arquivos locais, Claude Fable contra a Conjectura de Jacobi, RCE no WordPress com IA por US$ 25, context engineering e mais]]></description><link>https://techleadsclub.substack.com/p/newsletter-86</link><guid isPermaLink="false">https://techleadsclub.substack.com/p/newsletter-86</guid><dc:creator><![CDATA[William Calderipe]]></dc:creator><pubDate>Mon, 20 Jul 2026 10:06:04 GMT</pubDate><enclosure url="https://substackcdn.com/image/fetch/$s_!Z9-W!,w_256,c_limit,f_auto,q_auto:good,fl_progressive:steep/https%3A%2F%2Fsubstack-post-media.s3.amazonaws.com%2Fpublic%2Fimages%2F134844ec-ca47-4df0-ab39-8ead3a5bf341_256x256.png" length="0" type="image/jpeg"/><content:encoded><![CDATA[<h2>Destaques</h2><p><strong><a href="https://newsletter.pragmaticengineer.com/p/what-is-loop-engineering?utm_source=techleadsclub&amp;utm_medium=newsletter&amp;utm_term=86">What is &#8220;loop engineering?&#8221;</a></strong></p><p>Gergely Orosz explica o conceito de &#8220;loop engineering&#8221;, que substitui a escrita de prompts pelo desenho de loops que rodam o agente at&#233; atingir uma meta, tra&#231;a sua origem no &#8220;Ralph loop&#8221; de Geoffrey Huntley e mostra como Codex, Hermes e Claude Code transformaram a t&#233;cnica no comando /goal, mas coleta relatos de devs que a abandonaram por deriva do agente e custo alto de tokens.</p><p><strong><a href="https://newsletter.pragmaticengineer.com/p/the-pulse-groks-cli-caught-uploading?utm_source=techleadsclub&amp;utm_medium=newsletter&amp;utm_term=86">The Pulse: Grok&#8217;s CLI caught uploading all your local files to the cloud</a></strong></p><p>Gergely Orosz relata que a CLI do Grok foi flagrada enviando todos os arquivos locais do usu&#225;rio para a nuvem, logo quando desenvolvedores come&#231;avam a adot&#225;-la por causa do modelo de c&#243;digo Grok 4.5.</p><h2>Favoritos</h2><p><strong><a href="https://seangoedecke.com/playing-politics/?utm_source=techleadsclub&amp;utm_medium=newsletter&amp;utm_term=86">What does &#8220;playing politics&#8221; mean for software engineers?</a></strong></p><p>Sean Goedecke sustenta que, para engenheiros de software, &#8220;fazer pol&#237;tica&#8221; n&#227;o &#233; conspirar mas agir como um guarda de castelo, identificando quem tem poder, evitando inimigos poderosos, ajudando essas pessoas e garantindo que elas percebam a ajuda.</p><p><strong><a href="https://seangoedecke.com/overtraining-as-the-path-to-human-like-ai/?utm_source=techleadsclub&amp;utm_medium=newsletter&amp;utm_term=86">Overtraining as the path to human-like AI</a></strong></p><p>Sean Goedecke resume a tese de Gwern de que os LLMs generalizam pior que humanos por n&#227;o terem &#8220;grokado&#8221; seus dom&#237;nios centrais e de que os laborat&#243;rios deveriam treinar um modelo gigantesco em um conjunto pequeno de dados para for&#231;ar generaliza&#231;&#245;es mais profundas.</p><p><strong><a href="/__u/alklaser.substack.com/p/o-iconoclasta-otimista-edicao-36?utm_source=techleadsclub&amp;utm_medium=newsletter&amp;utm_term=86">Voc&#234; est&#225; terceirizando a capacidade de julgar o que voc&#234; terceiriza</a></strong></p><p>Alexandre Klaser argumenta que, ao repassar &#224; IA o trabalho bruto que antes formava juniores, empresas terceirizam sem perceber a pr&#243;pria capacidade de julgar o que terceirizam, e defende decidir no horizonte da capacidade, n&#227;o no do or&#231;amento, tratando forma&#231;&#227;o como linha de suprimento e n&#227;o de custo.</p><p><strong><a href="https://martinfowler.com/articles/archaeologist-copilot.html?utm_source=techleadsclub&amp;utm_medium=newsletter&amp;utm_term=86">The Archaeologist&#8217;s Copilot</a></strong></p><p>Martin Fowler apresenta o relato de Nik Malykhin sobre modernizar uma base de c&#243;digo Java 1.5, mostrando que a IA s&#243; foi &#250;til quando ancorada em evid&#234;ncias, com pap&#233;is claros, valida&#231;&#227;o em ambiente Docker est&#225;vel e refatora&#231;&#227;o gradual protegida por testes.</p><p><strong><a href="https://lethain.com/make-no-assumptions/?utm_source=techleadsclub&amp;utm_medium=newsletter&amp;utm_term=86">Make no assumptions.</a></strong></p><p>Will Larson alerta que usar LLMs para chegar a conclus&#245;es, e n&#227;o apenas para explorar op&#231;&#245;es, contamina as camadas de racioc&#237;nio das organiza&#231;&#245;es, e recomenda &#8220;n&#227;o fazer suposi&#231;&#245;es&#8221;, inspecionar cada detalhe e garantir que o autor seja o primeiro humano a revisar o pr&#243;prio output.</p><h2>AI</h2><p><strong><a href="https://newsletter.pragmaticengineer.com/p/context-engineering-with-dex-horthy?utm_source=techleadsclub&amp;utm_medium=newsletter&amp;utm_term=86">Context engineering with Dex Horthy</a></strong></p><p>No podcast do Pragmatic Engineer, Gergely Orosz conversa com Dex Horthy, criador do termo &#8220;context engineering&#8221;, que defende manter o uso da janela de contexto abaixo da &#8220;zona burra&#8221; via compacta&#231;&#227;o intencional e explica por que enviar c&#243;digo gerado por IA sem revis&#227;o levou sua equipe a jogar fora um sistema inteiro ap&#243;s quatro meses.</p><p><strong><a href="https://simonwillison.net/2026/Jul/19/claude-code-in-bun-in-rust/?utm_source=techleadsclub&amp;utm_medium=newsletter&amp;utm_term=86">Claude Code uses Bun written in Rust now</a></strong></p><p>Simon Willison registra que o Claude Code passou a rodar sobre o Bun, agora escrito em Rust, e re&#250;ne a repercuss&#227;o da mudan&#231;a no Hacker News.</p><p><strong><a href="https://blog.bytebytego.com/p/mcp-vs-a2a-vs-acp-how-ai-agents-actually?utm_source=techleadsclub&amp;utm_medium=newsletter&amp;utm_term=86">MCP vs A2A vs ACP: How AI Agents Actually Talk to Each Other</a></strong></p><p>A ByteByteGo diferencia tr&#234;s protocolos de comunica&#231;&#227;o entre agentes de IA, MCP para acesso a ferramentas, A2A para di&#225;logo entre agentes via Agent Card e ACP, uma abordagem REST-first j&#225; incorporada ao A2A, e conclui que na pr&#225;tica MCP e A2A se complementam.</p><p><strong><a href="https://blog.bytebytego.com/p/how-llms-learn-to-be-helpful-rlhf?utm_source=techleadsclub&amp;utm_medium=newsletter&amp;utm_term=86">How LLMs Learn to Be Helpful (RLHF vs DPO)</a></strong></p><p>A ByteByteGo explica como os modelos aprendem a ser &#250;teis depois do pr&#233;-treino e do fine-tuning supervisionado, detalhando por que a imita&#231;&#227;o n&#227;o basta quando uma pergunta tem v&#225;rias respostas boas e comparando RLHF e DPO como m&#233;todos de ensinar prefer&#234;ncias a partir de compara&#231;&#245;es humanas.</p><p><strong><a href="https://blog.bytebytego.com/p/how-microsoft-ships-ai-agents-at?utm_source=techleadsclub&amp;utm_medium=newsletter&amp;utm_term=86">How Microsoft Ships AI Agents at Enterprise Scale</a></strong></p><p>A ByteByteGo entrevista Marco Casalaina, VP de produtos da Core AI da Microsoft, que descreve como a empresa leva agentes &#224; produ&#231;&#227;o no Foundry usando recupera&#231;&#227;o como subagente, identidade pr&#243;pria para cada agente e avalia&#231;&#245;es baseadas em rubricas com um la&#231;o de automelhoria, argumentando que o modelo raramente &#233; o problema, e sim a m&#225;quina constru&#237;da ao redor dele.</p><p><strong><a href="https://refactoring.fm/p/what-llm-should-you-use-for-ai-coding?utm_source=techleadsclub&amp;utm_medium=newsletter&amp;utm_term=86">What LLM should you use for AI coding?</a></strong></p><p>Luca Rossi, na Refactoring, prop&#245;e um modelo mental para escolher qual LLM usar em programa&#231;&#227;o a partir de tr&#234;s dimens&#245;es interligadas, acur&#225;cia, velocidade e custo, e argumenta que rotear tarefas por dificuldade evita pagar pre&#231;o de fronteira em tudo, j&#225; que modelos abertos custam uma fra&#231;&#227;o dos de fronteira com cerca de 80% da acur&#225;cia.</p><p><strong><a href="https://martinfowler.com/articles/llm-and-dsls.html?utm_source=techleadsclub&amp;utm_medium=newsletter&amp;utm_term=86">DSLs Enable Reliable Use of LLMs</a></strong></p><p>No site de Martin Fowler, Unmesh Joshi mostra, usando o exemplo do Tickloom, como abstra&#231;&#245;es e linguagens espec&#237;ficas de dom&#237;nio funcionam como um trilho que orienta os LLMs, permitindo construir a DSL iterativamente com o modelo e depois us&#225;-la como interface em linguagem natural e fonte da verdade do sistema.</p><p><strong><a href="https://slcyber.io/research-center/exploit-brokers-pay-500000-for-a-wordpress-rce-i-found-one-with-gpt5-6/?utm_source=techleadsclub&amp;utm_medium=newsletter&amp;utm_term=86">Exploit brokers pay $500k for WordPress RCEs. I found one with GPT5.6 and $25</a></strong></p><p>Um pesquisador da SL Cyber relata que encontrou uma vulnerabilidade de execu&#231;&#227;o remota de c&#243;digo no WordPress, do tipo que corretores de exploits pagam 500 mil d&#243;lares, usando o GPT-5.6 e cerca de 25 d&#243;lares em custos.</p><p><strong><a href="https://www.youtube.com/watch?v=9d6QXuPX8t4&amp;utm_source=techleadsclub&amp;utm_medium=newsletter&amp;utm_term=86">A IA vai ficar mais barata: 4 papers dessa semana provam isso. O que muda para quem decide? - YouTube</a></strong></p><p>Em v&#237;deo no YouTube, Waldemar Neto analisa quatro papers da semana que apontam para a queda no custo da IA e discute o que essa tend&#234;ncia muda para quem toma decis&#245;es.</p><p><strong><a href="https://xcancel.com/__alpoge__/status/2079028340955197566?utm_source=techleadsclub&amp;utm_medium=newsletter&amp;utm_term=86">Claude Fable produced a counterexample to the Jacobian Conjecture</a></strong></p><p>O matem&#225;tico Levent Alp&#246;ge relata que o Claude Fable produziu um contraexemplo &#224; Conjectura de Jacobi, um problema em aberto na matem&#225;tica h&#225; d&#233;cadas.</p><p><strong><a href="https://newsletter.getdx.com/p/ukgs-system-for-driving-effective-ai-use?utm_source=techleadsclub&amp;utm_medium=newsletter&amp;utm_term=86">UKG&#8217;s system for driving effective AI use</a></strong></p><p>Na Engineering Enablement, Abi Noda entrevista Thomas Newton, VP de engenharia da UKG, que detalha o dashboard de ado&#231;&#227;o de IA para gestores, o qual cruza consist&#234;ncia de uso, custo e a m&#233;trica TrueThroughput num quadrante e, em quatro meses, reduziu a zona de baixa ado&#231;&#227;o para menos de 1% da organiza&#231;&#227;o, servindo como ponto de partida para conversas de coaching e n&#227;o como ferramenta de avalia&#231;&#227;o de desempenho.</p><h2>Arquitetura</h2><p><strong><a href="https://blog.bytebytego.com/p/a-guide-to-multi-tenancy-benefits?utm_source=techleadsclub&amp;utm_medium=newsletter&amp;utm_term=86">A Guide to Multi-Tenancy: Benefits and Challenges</a></strong></p><p>A ByteByteGo explica a arquitetura multi-tenant desde o b&#225;sico, cobrindo onde os dados de cada cliente vivem, o problema do vizinho barulhento, o raio de impacto de falhas e o conceito de contexto de tenant que atravessa todo o sistema.</p><p><strong><a href="https://jvns.ca/blog/2026/07/17/learning-about-running-sqlite/?utm_source=techleadsclub&amp;utm_medium=newsletter&amp;utm_term=86">Learning a few things about running SQLite</a></strong></p><p>Julia Evans relata li&#231;&#245;es ao rodar SQLite em produ&#231;&#227;o com Django, mostrando como o comando ANALYZE derrubou uma consulta de 5 segundos para 0,05, por que limpezas de dados precisam ser feitas em pequenos lotes e como faz backups com restic e Litestream.</p><p><strong><a href="https://newsletter.systemdesigncodex.com/p/top-system-design-performance-metrics?utm_source=techleadsclub&amp;utm_medium=newsletter&amp;utm_term=86">Top System Design Performance Metrics</a></strong></p><p>Saurabh Dashora, do System Design Codex, apresenta cinco m&#233;tricas essenciais de performance em system design, disponibilidade, throughput, lat&#234;ncia, escalabilidade e redund&#226;ncia, com formas pr&#225;ticas de medir e melhorar cada uma.</p><p><strong><a href="https://newsletter.systemdesignclassroom.com/p/how-to-survive-the-recommendation?utm_source=techleadsclub&amp;utm_medium=newsletter&amp;utm_term=86">How to Survive the Recommendation Engine Question</a></strong></p><p>Raul Junco, do System Design Classroom, argumenta que a chave para a pergunta de recommendation engine em entrevistas n&#227;o &#233; o algoritmo, e sim separar a gera&#231;&#227;o das recomenda&#231;&#245;es do servi&#231;o de entrega, tratando coleta de eventos, cold starts e fallbacks.</p><h2>Lideran&#231;a t&#233;cnica</h2><p><strong><a href="/__u/fidelissauro.substack.com/p/staff-framework-metodologia-star?utm_source=techleadsclub&amp;utm_medium=newsletter&amp;utm_term=86">Staff Framework - Metodologia STAR e Comunica&#231;&#227;o Executiva</a></strong></p><p>Matheus Fidelis adapta o m&#233;todo STAR para comunica&#231;&#227;o executiva, mostrando como profissionais Staff+ podem tornar contextos, decis&#245;es e impactos t&#233;cnicos compreens&#237;veis para executivos que n&#227;o participaram da execu&#231;&#227;o.</p><p><strong><a href="https://hardcoresoftware.learningbyshipping.com/p/240-banning-ai-in-law-school-weve?utm_source=techleadsclub&amp;utm_medium=newsletter&amp;utm_term=86">240. Banning AI in Law School: We&#8217;ve Seen This Before</a></strong></p><p>Steven Sinofsky, do Hardcore Software, compara o novo banimento de IA pela faculdade de direito da Universidade de Chicago com a proibi&#231;&#227;o dos primeiros computadores port&#225;teis por Harvard h&#225; 45 anos, questionando rea&#231;&#245;es precoces a tecnologias novas.</p><p><strong><a href="https://fs.blog/knowledge-project-podcast/kaz-nejatian/?utm_source=techleadsclub&amp;utm_medium=newsletter&amp;utm_term=86">Truth Over Feelings: Inside Opendoor&#8217;s Massive Turnaround</a></strong></p><p>A Farnam Street conversa com Kaz Nejatian sobre a virada da Opendoor &#224; beira da fal&#234;ncia, discutindo por que empresas se afastam da realidade, por que a verdade precisa importar mais que sentimentos e como reconstruir cultura, cortar burocracia e usar IA para achatar a gest&#227;o.</p><p><strong><a href="https://newsletter.posthog.com/p/product-for-engineers-is-now-build?utm_source=techleadsclub&amp;utm_medium=newsletter&amp;utm_term=86">Product for Engineers is now build mode</a></strong></p><p>Ian Vanagas anuncia que a PostHog renomeou a newsletter Product for Engineers para build mode, argumentando que a IA ampliou quem constr&#243;i produtos e tornou as habilidades de produto ainda mais importantes quando escrever c&#243;digo ficou barato.</p><h2>Ferramentas</h2><p><strong><a href="https://javascriptweekly.com/link/187846/rss?utm_source=techleadsclub&amp;utm_medium=newsletter&amp;utm_term=86">npm v12 Released: Install Scripts are Off by Default</a></strong></p><p>npm 12 is now GA with many breaking changes. The big change is lifecycle scripts no longer run by default, but here are more practical implications to consider. It may also be worth upgrading via 11.18.0 first.</p><p><strong><a href="https://golangweekly.com/link/188148/rss?utm_source=techleadsclub&amp;utm_medium=newsletter&amp;utm_term=86">Microsoft Agent Framework for Go in Public Preview</a></strong></p><p>Microsoft follows in Google ADK Go&#8217;s footsteps with its own framework for building, orchestrating and deploying AI agents and workflows. GitHub repo.</p><p><strong><a href="https://rubyweekly.com/link/188074/rss?utm_source=techleadsclub&amp;utm_medium=newsletter&amp;utm_term=86">Introducing Insta: Snapshot Testing for Ruby</a></strong></p><p>Instead of hand-writing expected values, tests assert against a recorded snapshot of your code&#8217;s output. When it changes, an interactive CLI shows the diff for you to accept or reject. Extracted from Herb and supports Minitest and RSpec. GitHub repo.</p><p><strong><a href="https://rubyweekly.com/link/188024/rss?utm_source=techleadsclub&amp;utm_medium=newsletter&amp;utm_term=86">lobste.rs Migrates from MariaDB to SQLite</a></strong></p><p>The lobste.rs programming link aggregator is built on an open source Rails app and, after a process spanning years, has now switched entirely to SQLite on a single instance. A good real-world case study for the Rails-on-SQLite era.</p><p><strong><a href="https://golangweekly.com/link/188147/rss?utm_source=techleadsclub&amp;utm_medium=newsletter&amp;utm_term=86">GoLand 2026.2 Released</a></strong></p><p>The latest release of the commercial Go IDE now integrates with the go fix tool and introduces a new &#8216;Go optimization&#8217; tool that brings profiling, escape analysis, and struct optimization into one place.</p>]]></content:encoded></item><item><title><![CDATA[🗞️ Newsletter #85]]></title><description><![CDATA[Mercado tech de 2026 por Orosz, Bun reescrito em Rust com IA, Own the Outer Loop de Addy Osmani, ado&#231;&#227;o de IA n&#227;o &#233; transforma&#231;&#227;o e mais]]></description><link>https://techleadsclub.substack.com/p/newsletter-85</link><guid isPermaLink="false">https://techleadsclub.substack.com/p/newsletter-85</guid><dc:creator><![CDATA[William Calderipe]]></dc:creator><pubDate>Sun, 12 Jul 2026 09:21:33 GMT</pubDate><enclosure url="https://substackcdn.com/image/fetch/$s_!Z9-W!,w_256,c_limit,f_auto,q_auto:good,fl_progressive:steep/https%3A%2F%2Fsubstack-post-media.s3.amazonaws.com%2Fpublic%2Fimages%2F134844ec-ca47-4df0-ab39-8ead3a5bf341_256x256.png" length="0" type="image/jpeg"/><content:encoded><![CDATA[<h2>Destaques</h2><p><strong><a href="https://www.youtube.com/watch?v=PYSyFKCvzNU&amp;utm_source=techleadsclub&amp;utm_medium=newsletter&amp;utm_term=85">Loop Engineering: quando N&#195;O usar</a></strong></p><p>Waldemar Neto explica a diferen&#231;a entre loop fixo e loop criador, por que loops sem um bom harness apenas perpetuam bugs e apresenta quatro perguntas para decidir quando n&#227;o usar Loop Engineering.</p><p><strong><a href="https://newsletter.pragmaticengineer.com/p/the-pulse-what-can-we-learn-from?utm_source=techleadsclub&amp;utm_medium=newsletter&amp;utm_term=85">The Pulse: What can we learn from Bun&#8217;s rapid Rust rewrite with AI?</a></strong></p><p>Gergely Orosz analisa a migra&#231;&#227;o do runtime Bun de Zig para Rust feita com o Fable, da Anthropic, que custou US$ 165 mil e encurtou um trabalho de 1 a 2 anos para 11 dias, e conclui que reescritas assistidas por IA exigem um projeto muito bem testado para dar certo.</p><h2>Favoritos</h2><p><strong><a href="/__u/addyo.substack.com/p/own-the-outer-loop?utm_source=techleadsclub&amp;utm_medium=newsletter&amp;utm_term=85">Own the Outer Loop</a></strong></p><p>Addy Osmani defende que engenheiros devem ser donos do &#8220;loop externo&#8221;, a responsabilidade de decidir, verificar e explicar o que os agentes produzem, enquanto os modelos executam o loop interno de investigar, implementar e testar.</p><p><strong><a href="/__u/alklaser.substack.com/p/o-iconoclasta-otimista-edicao-35?utm_source=techleadsclub&amp;utm_medium=newsletter&amp;utm_term=85">Todo dev agora entrega mais. A empresa evoluiu junto?</a></strong></p><p>Alexandre Klaser argumenta que adotar IA no desenvolvimento n&#227;o transforma a organiza&#231;&#227;o e apenas deixa cada desenvolvedor mais r&#225;pido, e defende que o ganho real aparece na capacidade coletiva quando a empresa rearquiteta o processo em vez de s&#243; distribuir ferramentas, distinguindo arquitetura de maquiagem.</p><p><strong><a href="https://newsletter.getdx.com/p/five-studies-that-are-changing-how?utm_source=techleadsclub&amp;utm_medium=newsletter&amp;utm_term=85">Five studies that are changing how I think about AI in software engineering</a></strong></p><p>Brian Houck, da DX, re&#250;ne cinco estudos recentes sobre IA na engenharia de software e conclui que a IA acelera a gera&#231;&#227;o de c&#243;digo, mas esses ganhos encolhem ao longo da entrega, deslocando o gargalo para revis&#227;o, verifica&#231;&#227;o e entendimento compartilhado, que ele defende tratar como um entreg&#225;vel.</p><p><strong><a href="https://seangoedecke.com/in-defense-of-not-understanding-your-codebase/?utm_source=techleadsclub&amp;utm_medium=newsletter&amp;utm_term=85">In defense of not understanding your codebase</a></strong></p><p>Sean Goedecke defende que, em bases de c&#243;digo grandes e com alta rotatividade, &#233; imposs&#237;vel entender o sistema por completo e que trabalhar com entendimento parcial &#233; o melhor poss&#237;vel, contestando a ideia de que tudo que atrapalha a teoria do programa de Naur seja necessariamente ruim.</p><p><strong><a href="https://refactoring.fm/p/the-rise-of-malleable-software-with?utm_source=techleadsclub&amp;utm_medium=newsletter&amp;utm_term=85">The Rise of Malleable Software</a></strong></p><p>Luca Rossi entrevista Geoffrey Litt, design engineer da Notion, sobre software male&#225;vel, categoria que ganha novo sentido com a IA, e sobre como a Notion passou a oferecer agentes e uma plataforma de desenvolvimento que permite escrever c&#243;digo dentro do pr&#243;prio produto.</p><p><strong><a href="https://registerspill.thorstenball.com/p/ownership?utm_source=techleadsclub&amp;utm_medium=newsletter&amp;utm_term=85">Ownership</a></strong></p><p>Thorsten Ball compartilha uma mensagem interna enviada ao time do Amp definindo ownership como assumir a solu&#231;&#227;o de um problema de ponta a ponta, do diagn&#243;stico aos edge cases, testes, deploy e comunica&#231;&#227;o, at&#233; n&#227;o ser mais preciso pensar nele.</p><p><strong><a href="https://newsletter.pragmaticengineer.com/p/tech-jobs-market-in-2026-part-3-hiring?utm_source=techleadsclub&amp;utm_medium=newsletter&amp;utm_term=85">Tech jobs market in 2026, part 3: hiring managers &amp; job seekers</a></strong></p><p>Gergely Orosz conversou com mais de 50 gestores e engenheiros e descreve um mercado de trabalho tech bifurcado no primeiro semestre de 2026, aquecido para quem atua em IA, ML e forward deployed engineering e dif&#237;cil para o restante, com curr&#237;culos inflados por IA, candidatos falsos e vagas preenchidas majoritariamente por indica&#231;&#227;o.</p><h2>AI</h2><p><strong><a href="https://newsletter.posthog.com/p/code-review-tips?utm_source=techleadsclub&amp;utm_medium=newsletter&amp;utm_term=85">Stop being the code review bottleneck</a></strong></p><p>Jina Yoon, da PostHog, apresenta quatro mudan&#231;as de fluxo para deixar de ser o gargalo do code review, como fazer agentes revisarem o c&#243;digo uns dos outros, delegar o acompanhamento de PRs a loops, adicionar um carimbador autom&#225;tico de PRs e verificar o c&#243;digo por observa&#231;&#227;o em vez de racioc&#237;nio.</p><p><strong><a href="https://careersatdoordash.com/blog/how-we-learned-to-trust-our-ai-code-reviewer-at-doordash/?utm_source=techleadsclub&amp;utm_medium=newsletter&amp;utm_term=85">How we learned to trust our AI code reviewer at DoorDash</a></strong></p><p>A DoorDash conta como aprendeu onde confiar em seu revisor de c&#243;digo com IA, triangulando sinais humanos, de produ&#231;&#227;o e de agentes em PRs reais em vez de depender de uma &#250;nica m&#233;trica.</p><p><strong><a href="https://blog.bytebytego.com/p/the-agent-loop-how-ai-goes-from-answering?utm_source=techleadsclub&amp;utm_medium=newsletter&amp;utm_term=85">The Agent Loop: How AI Goes From Answering Questions to Doing Things</a></strong></p><p>A ByteByteGo explica como um agente &#233; apenas um LLM colocado dentro de um loop no qual o pr&#243;prio modelo decide quando parar, tra&#231;ando a progress&#227;o de chamadas &#250;nicas a function calling, encadeamento e agentes, e quando cada padr&#227;o faz sentido.</p><p><strong><a href="https://blog.bytebytego.com/p/chatgpt-vs-gemini-vs-claude-how-they?utm_source=techleadsclub&amp;utm_medium=newsletter&amp;utm_term=85">ChatGPT vs Gemini vs Claude: How They Differ</a></strong></p><p>A ByteByteGo compara ChatGPT, Gemini e Claude, mostrando como as diferen&#231;as de comportamento de cada modelo decorrem de escolhas arquiteturais distintas feitas sobre a mesma base transformer.</p><p><strong><a href="https://martinfowler.com/articles/exploring-gen-ai/local-models-for-coding-experiences.html?utm_source=techleadsclub&amp;utm_medium=newsletter&amp;utm_term=85">Experiences with local models for coding</a></strong></p><p>Birgitta B&#246;ckeler, no site de Martin Fowler, relata suas experi&#234;ncias recentes usando modelos de LLM locais para programar, comparando-os em duas tarefas padr&#227;o e testando o mais promissor no dia a dia.</p><p><strong><a href="https://www.latent.space/p/modal2026?utm_source=techleadsclub&amp;utm_medium=newsletter&amp;utm_term=85">Why AI Infrastructure must evolve for Agent Experience</a></strong></p><p>Akshat Bubna, CTO da Modal, explica na Latent Space por que a infraestrutura de nuvem precisa evoluir da experi&#234;ncia do desenvolvedor para a experi&#234;ncia do agente, com sandboxes, infer&#234;ncia el&#225;stica e observabilidade voltadas &#224;s cargas de trabalho bursty que a IA gera.</p><p><strong><a href="https://www.latent.space/p/vercel-agents-new-software?utm_source=techleadsclub&amp;utm_medium=newsletter&amp;utm_term=85">Vercel&#8217;s Andrew Qu on why agents are a new kind of software</a></strong></p><p>Andrew Qu, Chief of Software da Vercel, argumenta em entrevista &#224; Latent Space que agentes s&#227;o um novo tipo de software, menos previs&#237;vel que aplica&#231;&#245;es web, e explica como a empresa reuniu primitivas de contexto, ferramentas e execu&#231;&#227;o no framework eve e passou a servir Markdown para agentes que acessam seus sites.</p><h2>Arquitetura</h2><p><strong><a href="https://blog.bytebytego.com/p/streaming-vs-batch-two-philosophies?utm_source=techleadsclub&amp;utm_medium=newsletter&amp;utm_term=85">Streaming vs Batch: Two Philosophies of Data Processing</a></strong></p><p>A ByteByteGo contrasta processamento em batch e streaming como duas filosofias de dados, mostrando que o batch espera pela completude enquanto o streaming troca completude por baixa lat&#234;ncia, e percorre janelas, watermarks, dados atrasados e as arquiteturas lambda e kappa.</p><p><strong><a href="https://blog.bytebytego.com/p/ep221-how-docker-works-under-the?utm_source=techleadsclub&amp;utm_medium=newsletter&amp;utm_term=85">EP221: How Docker Works Under the Hood</a></strong></p><p>A ByteByteGo detalha como o Docker funciona por baixo dos panos, da CLI ao dockerd, containerd e runc at&#233; virar um processo Linux isolado por namespaces e cgroups, e ainda cobre git merge versus rebase, bancos vetoriais, estrat&#233;gias de pagina&#231;&#227;o e pesquisa profunda com agentes.</p><p><strong><a href="https://newsletter.systemdesigncodex.com/p/essential-non-functional-requirements?utm_source=techleadsclub&amp;utm_medium=newsletter&amp;utm_term=85">Essential Non Functional Requirements</a></strong></p><p>Saurabh Dashora, do System Design Codex, apresenta oito requisitos n&#227;o funcionais essenciais, disponibilidade, lat&#234;ncia, escalabilidade, durabilidade, consist&#234;ncia, modularidade, configurabilidade e resili&#234;ncia, com formas pr&#225;ticas de implementar cada um.</p><p><strong><a href="https://clickhouse.com/blog/pgbouncer-clickhouse-managed-postgres?utm_source=techleadsclub&amp;utm_medium=newsletter&amp;utm_term=85">We scaled PgBouncer to 4x throughput</a></strong></p><p>A ClickHouse rodou uma frota de processos PgBouncer proporcional aos n&#250;cleos de CPU, usando SO_REUSEPORT para balancear a carga no kernel, e elevou o throughput de 87 mil para 336 mil transa&#231;&#245;es por segundo.</p><p><strong><a href="https://postgresweekly.com/link/187566/rss?utm_source=techleadsclub&amp;utm_medium=newsletter&amp;utm_term=85">Postgres is Enough: How Postgres Can Replace Other Things</a></strong></p><p>Um diret&#243;rio re&#250;ne 89 extens&#245;es e ferramentas que permitem ao Postgres substituir sistemas como Redis, Elasticsearch e Kafka.</p><p><strong><a href="https://timeseriesofindia.com/economy/reads/upi-architecture/?utm_source=techleadsclub&amp;utm_medium=newsletter&amp;utm_term=85">UPI: Anatomy of a Payment Transaction</a></strong></p><p>Um artigo destrincha a arquitetura do UPI indiano, mostrando como sete entidades processam um pagamento com d&#233;bito antes do cr&#233;dito e garantia de revers&#227;o em at&#233; um dia.</p><h2>Lideran&#231;a t&#233;cnica</h2><p><strong><a href="https://lethain.com/generated-demand/?utm_source=techleadsclub&amp;utm_medium=newsletter&amp;utm_term=85">Generated and suppressed demand.</a></strong></p><p>Will Larson explica que times de alto crescimento que se recuperam geram demanda antes suprimida e voltam a ficar sobrecarregados, precisando repetir o ciclo de recupera&#231;&#227;o at&#233; esgotar o backlog invis&#237;vel.</p><p><strong><a href="https://newsletter.getdx.com/p/from-dashboards-to-decisions?utm_source=techleadsclub&amp;utm_medium=newsletter&amp;utm_term=85">From dashboards to decisions</a></strong></p><p>Brian Houck defende que sistemas de medi&#231;&#227;o de produtividade devem orientar interven&#231;&#245;es em vez de apenas reportar n&#250;meros, ilustrando com casos da Microsoft sobre tempo de foco, onboarding e dias de descanso.</p><p><strong><a href="https://refactoring.fm/p/customer-work-vs-product-work?utm_source=techleadsclub&amp;utm_medium=newsletter&amp;utm_term=85">Customer work vs product work</a></strong></p><p>Luca Rossi analisa a tens&#227;o entre trabalho sob medida para clientes e trabalho de produto no B2B enterprise, propondo pap&#233;is dedicados como solution engineers para proteger o roadmap e reconverter demandas em produto.</p><p><strong><a href="https://newsletter.getdx.com/p/adopting-the-product-operating-model?utm_source=techleadsclub&amp;utm_medium=newsletter&amp;utm_term=85">Adopting the product operating model at Priceline</a></strong></p><p>Em epis&#243;dio do Engineering Enablement, l&#237;deres da Priceline contam como m&#233;tricas de developer experience revelaram gargalos organizacionais e motivaram a migra&#231;&#227;o de um modelo por projetos para times de produto multifuncionais.</p><h2>Ferramentas</h2><p><strong><a href="https://javascriptweekly.com/link/187563/rss?utm_source=techleadsclub&amp;utm_medium=newsletter&amp;utm_term=85">Astryx: Meta Open Sources Its Design System</a></strong></p><p>A Meta abriu o c&#243;digo do Astryx, seu design system usado em mais de 13 mil apps internos, com mais de 150 componentes React, temas, modo escuro e ferramentas de CLI.</p><p><strong><a href="https://javascriptweekly.com/link/187516/rss?utm_source=techleadsclub&amp;utm_medium=newsletter&amp;utm_term=85">Vite+ Beta: A Web Dev Toolchain Behind One Command</a></strong></p><p>O time do Vite lan&#231;ou o beta do Vite+, um toolchain unificado que re&#250;ne Vite, Vitest e Oxlint sob o comando vp para servidor de desenvolvimento, testes, formata&#231;&#227;o e bundling.</p><p><strong><a href="https://rubyweekly.com/link/187704/rss?utm_source=techleadsclub&amp;utm_medium=newsletter&amp;utm_term=85">Lexxy: A Modern Rich Text Editor for Rails</a></strong></p><p>A 37signals apresentou o Lexxy, editor de rich text para Rails que substitui o Trix, j&#225; atua como editor principal do Basecamp e integra Markdown, links inteligentes, destaque de c&#243;digo e Action Text.</p><p><strong><a href="https://devblogs.microsoft.com/commandline/wsl-container-is-now-available-for-public-preview/?utm_source=techleadsclub&amp;utm_medium=newsletter&amp;utm_term=85">WSL container is now available for public preview</a></strong></p><p>A Microsoft liberou o preview p&#250;blico do WSL container, que traz a CLI wslc.exe embutida no WSL e permite rodar comandos Docker padr&#227;o no Windows sem o Docker Desktop.</p><p><strong><a href="https://www.langchain.com/blog/introducing-openwiki-an-open-source-agent-for-repo-documentation?utm_source=techleadsclub&amp;utm_medium=newsletter&amp;utm_term=85">OpenWiki: Open Source Repo Documentation for Coding Agents</a></strong></p><p>A LangChain lan&#231;ou o OpenWiki, agente open source que gera e mant&#233;m documenta&#231;&#227;o de reposit&#243;rios para que agentes de c&#243;digo encontrem o contexto necess&#225;rio sem carregar tudo em um &#250;nico arquivo de instru&#231;&#245;es.</p>]]></content:encoded></item><item><title><![CDATA[🗞️ Newsletter #84]]></title><description><![CDATA[Gergely Orosz visita OpenAI, Anthropic e Cursor e v&#234; agentes na nuvem virarem padr&#227;o, Kent Beck e o lado humano da engenharia, n&#237;veis de autonomia ag&#234;ntica de Addy Osmani e mais]]></description><link>https://techleadsclub.substack.com/p/newsletter-84</link><guid isPermaLink="false">https://techleadsclub.substack.com/p/newsletter-84</guid><dc:creator><![CDATA[William Calderipe]]></dc:creator><pubDate>Sat, 04 Jul 2026 06:55:15 GMT</pubDate><enclosure url="https://substackcdn.com/image/fetch/$s_!Z9-W!,w_256,c_limit,f_auto,q_auto:good,fl_progressive:steep/https%3A%2F%2Fsubstack-post-media.s3.amazonaws.com%2Fpublic%2Fimages%2F134844ec-ca47-4df0-ab39-8ead3a5bf341_256x256.png" length="0" type="image/jpeg"/><content:encoded><![CDATA[<h2>Destaques</h2><p><strong><a href="https://newsletter.pragmaticengineer.com/p/impressions-from-visiting-openai?utm_source=techleadsclub&amp;utm_medium=newsletter&amp;utm_term=84">Impressions from visiting OpenAI, Anthropic, &amp; Cursor</a></strong></p><p>Gergely Orosz, da Pragmatic Engineer, relata visitas &#224;s sedes de OpenAI, Anthropic e Cursor e aponta a pr&#243;xima megatend&#234;ncia do setor: agentes rodando na nuvem, que dispensam a configura&#231;&#227;o local, executam tarefas longas em paralelo e j&#225; concentram contrata&#231;&#245;es nas tr&#234;s empresas, com a OpenAI comprando a Ona, ex-Gitpod, para sustentar essa infraestrutura.</p><p><strong><a href="https://www.anthropic.com/news/claude-sonnet-5?utm_source=techleadsclub&amp;utm_medium=newsletter&amp;utm_term=84">Introducing Claude Sonnet 5</a></strong></p><p>Anthropic lan&#231;ou o Claude Sonnet 5, que superou todos os modelos anteriores em benchmarks de matem&#225;tica, programa&#231;&#227;o e racioc&#237;nio visual.</p><h2>Favoritos</h2><p><strong><a href="https://newsletter.pragmaticengineer.com/p/how-kent-beck-shapes-the-software?utm_source=techleadsclub&amp;utm_medium=newsletter&amp;utm_term=84">How Kent Beck shapes the software engineering industry</a></strong></p><p>Gergely Orosz entrevista Kent Beck, criador do Extreme Programming e do TDD e coautor do Manifesto &#193;gil, que reconta a pr&#243;pria trajet&#243;ria do Smalltalk ao Facebook e argumenta que programar &#233; apenas uma pequena parte da engenharia de software, que a parte humana &#233; a mais dif&#237;cil e que ningu&#233;m ainda sabe como engenheiros devem trabalhar ao lado de agentes de IA.</p><p><strong><a href="https://www.benkuhn.net/impact/?utm_source=techleadsclub&amp;utm_medium=newsletter&amp;utm_term=84">Impact, agency, and taste</a></strong></p><p>Impacto, autonomia e bom senso t&#233;cnico formam um ciclo virtuoso onde cada elemento refor&#231;a os outros dois na carreira de desenvolvedores.</p><p><strong><a href="/__u/addyo.substack.com/p/agentic-autonomy-levels?utm_source=techleadsclub&amp;utm_medium=newsletter&amp;utm_term=84">Agentic Autonomy Levels</a></strong></p><p>Addy Osmani prop&#245;e um modelo de n&#237;veis de autonomia para engenharia ag&#234;ntica que separa os eixos de ag&#234;ncia e de orquestra&#231;&#227;o em seis n&#237;veis, do autocomplete &#224; f&#225;brica de agentes gerida por exce&#231;&#227;o, e defende que a autonomia deve seguir o processo de verifica&#231;&#227;o e a reversibilidade do risco, n&#227;o o nome da tarefa.</p><p><strong><a href="/__u/alklaser.substack.com/p/o-iconoclasta-otimista-edicao-34?utm_source=techleadsclub&amp;utm_medium=newsletter&amp;utm_term=84">Havia uma resposta que voc&#234; teria recusado?</a></strong></p><p>Alexandre Klaser argumenta que aprovar n&#227;o &#233; decidir: quando a IA barateia a produ&#231;&#227;o de c&#243;digo e de an&#225;lises, o reflexo de carimbar o output sem julgamento vira modelo operacional, e ele defende instalar rastros de verifica&#231;&#227;o, uma rejei&#231;&#227;o nomeada, uma alternativa registrada e um crit&#233;rio posto antes de ver o resultado, para separar quem decide de quem apenas homologa.</p><p><strong><a href="https://dev.karltryggvason.com/you-cant-unit-test-for-taste/?utm_source=techleadsclub&amp;utm_medium=newsletter&amp;utm_term=84">You can&#8217;t unit test for taste</a></strong></p><p>Karl Tryggvason argumenta que testes unit&#225;rios n&#227;o conseguem verificar se o software possui bom design e experi&#234;ncia do usu&#225;rio.</p><h2>AI</h2><p><strong><a href="https://newsletter.getdx.com/p/from-pr-throughput-to-product-velocity?utm_source=techleadsclub&amp;utm_medium=newsletter&amp;utm_term=84">From PR throughput to product velocity: How Dropbox is rethinking productivity in the agentic era</a></strong></p><p>Uma Namasivayam, Diretor S&#234;nior de Produtividade de Engenharia da Dropbox, relata como a empresa elevou a ado&#231;&#227;o de IA de cerca de 30% para 100% em seis meses e dobrou o throughput de PRs, e explica por que est&#225; abandonando o volume de pull requests como m&#233;trica em favor de velocidade de produto, construindo a camada de orquestra&#231;&#227;o Nova para redesenhar o ciclo de desenvolvimento na era ag&#234;ntica.</p><p><strong><a href="https://newsletter.getdx.com/p/ai-and-engineering-productivity-debating?utm_source=techleadsclub&amp;utm_medium=newsletter&amp;utm_term=84">AI and engineering productivity: Debating the headlines</a></strong></p><p>Em painel de encerramento do DX Annual conduzido por Justin Reock, l&#237;deres de Etsy, Twilio, GitHub, Google e Microsoft debatem o efeito da IA na produtividade de engenharia e rejeitam a ideia de que ela elimina a necessidade de engenheiros ou de juniores, argumentando que os maiores obst&#225;culos &#224; ado&#231;&#227;o s&#227;o humanos, ligados a aprendizado, cultura e gest&#227;o de mudan&#231;a, e n&#227;o &#224;s ferramentas.</p><p><strong><a href="https://newsletter.getdx.com/p/2x-the-power-users-how-structured?utm_source=techleadsclub&amp;utm_medium=newsletter&amp;utm_term=84">2x the power users: How structured AI training scaled developer productivity</a></strong></p><p>Michael Redding e Jeff Davis explicam como a Indeed elevou o uso semanal de ferramentas de codifica&#231;&#227;o com IA de cerca de 25% para 97% ao treinar mais de 2.000 engenheiros com o programa estruturado AI Coding Essentials, que reduziu o tempo de codifica&#231;&#227;o em torno de 35% entre quem concluiu o treinamento e em cerca de 20% na organiza&#231;&#227;o como um todo.</p><p><strong><a href="https://blog.bytebytego.com/p/how-ai-agents-manage-memory-and-avoid?utm_source=techleadsclub&amp;utm_medium=newsletter&amp;utm_term=84">How AI Agents Manage Memory and Avoid Forgetfulness</a></strong></p><p>A ByteByteGo explica que todo LLM &#233; stateless e enxerga apenas o texto colocado na janela de contexto de cada chamada, de modo que a mem&#243;ria de agentes &#233; um problema de engenharia da plataforma ao redor do modelo, que grava informa&#231;&#245;es e as reinsere no prompt no momento certo em vez de depender do pr&#243;prio modelo.</p><p><strong><a href="https://www.latent.space/p/forward-deployed-engineers-aiewf?utm_source=techleadsclub&amp;utm_medium=newsletter&amp;utm_term=84">Forward Deployed Engineers and the future of software engineering</a></strong></p><p>Natalie Meurer, Head of Agent Engineering da Sierra, argumenta em entrevista &#224; Latent Space que o forward deployed engineer &#233; definido mais pela responsabilidade perante o cliente do que por um conjunto fixo de habilidades, e prev&#234; que engenharia de produto e engenharia voltada ao cliente v&#227;o convergir &#224; medida que escrever c&#243;digo fica barato.</p><p><strong><a href="https://www.latent.space/p/skill-engineering-design?utm_source=techleadsclub&amp;utm_medium=newsletter&amp;utm_term=84">Skill engineering and the case against one-shot AI design</a></strong></p><p>Paul Bakaus, criador do sistema open-source Impeccable, defende a disciplina emergente de skill engineering e rejeita o design de IA em um &#250;nico disparo, propondo que a IA entregue rapidamente os primeiros 80% de uma interface enquanto a pessoa mant&#233;m os 20% finais de gosto e julgamento, e afirma que sua ferramenta nunca ter&#225; modo autom&#225;tico.</p><p><strong><a href="https://seangoedecke.com/text-ai-watermarks/?utm_source=techleadsclub&amp;utm_medium=newsletter&amp;utm_term=84">Text AI watermarks will always be trivial to remove</a></strong></p><p>Sean Goedecke argumenta que as marcas d&#8217;&#225;gua em texto gerado por IA, exigidas pelo Artigo 50 do AI Act da Uni&#227;o Europeia a partir de agosto de 2026, sempre ser&#227;o triviais de remover, j&#225; que parafrasear o texto apaga assinaturas estat&#237;sticas como o SynthID do Google e substituir hom&#243;glifos elimina marcas baseadas em Unicode.</p><p><strong><a href="https://blog.bytebytego.com/p/inside-thinking-machines-interaction?utm_source=techleadsclub&amp;utm_medium=newsletter&amp;utm_term=84">Inside Thinking Machines&#8217; Interaction Models</a></strong></p><p>A ByteByteGo apresenta os interaction models propostos pelo laborat&#243;rio Thinking Machines, que criticam a arquitetura de IA baseada em turnos por congelar a percep&#231;&#227;o do modelo durante a gera&#231;&#227;o e defendem sistemas capazes de sustentar colabora&#231;&#227;o cont&#237;nua, com interrup&#231;&#245;es e corre&#231;&#245;es humanas em tempo real.</p><p><strong><a href="https://blog.bytebytego.com/p/ep220-rag-vs-graph-rag-vs-agentic?utm_source=techleadsclub&amp;utm_medium=newsletter&amp;utm_term=84">EP220: RAG vs Graph RAG vs Agentic RAG</a></strong></p><p>A ByteByteGo compara tr&#234;s formas de conectar LLMs a dados pr&#243;prios, RAG padr&#227;o, Graph RAG e Agentic RAG, detalhando o fluxo de cada uma e indicando quando usar cada abordagem conforme velocidade, custo, estrutura do conhecimento e necessidade de racioc&#237;nio em m&#250;ltiplas etapas.</p><p><strong><a href="https://danluu.com/ai-coding/?utm_source=techleadsclub&amp;utm_medium=newsletter&amp;utm_term=84#appendix-agentic-loops-and-writing-this-post">Agentic coding notes from Galapagos Island</a></strong></p><p>Dan Luu re&#250;ne suas anota&#231;&#245;es sobre programa&#231;&#227;o assistida por agentes de IA, refletindo sobre o uso pr&#225;tico de ferramentas de coding ag&#234;ntico a partir da pr&#243;pria experi&#234;ncia.</p><p><strong><a href="https://htmx.org/essays/working-with-ai/?utm_source=techleadsclub&amp;utm_medium=newsletter&amp;utm_term=84">&lt;/&gt; htmx ~ Working With AI: A Concrete Example</a></strong></p><p>O criador do htmx demonstra como usar IA para escrever c&#243;digo funcional rapidamente atrav&#233;s de itera&#231;&#245;es focadas em problemas espec&#237;ficos.</p><h2>Arquitetura</h2><p><strong><a href="https://blog.bytebytego.com/p/multi-region-architecture-going-global?utm_source=techleadsclub&amp;utm_medium=newsletter&amp;utm_term=84">Multi-Region Architecture: Going Global Without Going Broke</a></strong></p><p>A ByteByteGo descreve arquitetura multi-regi&#227;o como uma progress&#227;o de etapas, mostrando que adicionar regi&#245;es para reduzir lat&#234;ncia e aumentar disponibilidade pode, na pr&#225;tica, tornar o sistema mais lento e menos confi&#225;vel quando o mesmo dado &#233; editado em locais diferentes e a rede entre eles falha, for&#231;ando decis&#245;es de consist&#234;ncia.</p><p><strong><a href="https://blog.bytebytego.com/p/how-openai-delivers-low-latency-voice?utm_source=techleadsclub&amp;utm_medium=newsletter&amp;utm_term=84">How OpenAI Delivers Low-Latency Voice AI for 900M Users</a></strong></p><p>A ByteByteGo detalha como a OpenAI entrega voz de baixa lat&#234;ncia para 900 milh&#245;es de usu&#225;rios semanais usando WebRTC sobre Kubernetes, separando a stack em um relay stateless na borda geogr&#225;fica e um transceiver stateful, e usando o campo ICE ufrag do pr&#243;prio protocolo como chave de roteamento lida no primeiro pacote de cada sess&#227;o.</p><p><strong><a href="https://postgresweekly.com/link/187278/rss?utm_source=techleadsclub&amp;utm_medium=newsletter&amp;utm_term=84">Why Slow Postgres Checkpoints Make Restarts Risky</a></strong></p><p>Jeremy Schneider explica, a partir de dois casos reais de outages prolongados, por que reiniciar uma inst&#226;ncia Postgres com checkpoints lentos pode agravar o problema em vez de resolv&#234;-lo, e prop&#245;e um limiar pr&#225;tico de alerta para evitar aprender isso da forma dif&#237;cil.</p><p><strong><a href="https://postgresweekly.com/link/187286/rss?utm_source=techleadsclub&amp;utm_medium=newsletter&amp;utm_term=84">Too Many Tables are Bad for You</a></strong></p><p>Laurenz Albe demonstra, com um caso de consultoria de performance, como ter tabelas demais em um banco Postgres eleva o uso de mem&#243;ria e ainda degrada as consultas feitas contra o pr&#243;prio cat&#225;logo de sistema do banco.</p><p><strong><a href="https://tratt.net/laurie/blog/2026/local_reasoning_for_global_properties.html?utm_source=techleadsclub&amp;utm_medium=newsletter&amp;utm_term=84">Local Reasoning for Global Properties</a></strong></p><p>Laurence Tratt argumenta que o sistema de ownership e os traits Send e Sync do Rust permitem raciocinar apenas localmente sobre o c&#243;digo e ainda assim garantir uma propriedade global como a aus&#234;ncia de data races, um modelo que ele v&#234; como caminho promissor para linguagens futuras e para corrigir a dificuldade de c&#243;digo gerado por IA em manter o estado global do programa consistente.</p><p><strong><a href="https://rubyweekly.com/link/187391/rss?utm_source=techleadsclub&amp;utm_medium=newsletter&amp;utm_term=84">Rails, The Sharp Parts: A Polymorphic Type is Not a Foreign Key</a></strong></p><p>Brandon Weaver argumenta que associa&#231;&#245;es polim&#243;rficas no Rails n&#227;o s&#227;o chaves estrangeiras de verdade e exp&#245;e as arestas perigosas do seu uso, resumindo sua recomenda&#231;&#227;o diante de perguntas sobre rela&#231;&#245;es polim&#243;rficas em uma &#250;nica palavra: n&#227;o.</p><p><strong><a href="https://www.buraksen.dev/articles/internals-of-postgresql-db-cluster-and-tables?utm_source=techleadsclub&amp;utm_medium=newsletter&amp;utm_term=84">Reading The Internals of PostgreSQL: Database Cluster, Databases, and Tables &#8212; Burak Sen</a></strong></p><p>PostgreSQL organiza dados em uma hierarquia de cluster de banco de dados, bancos individuais e tabelas, onde cada n&#237;vel possui estruturas de arquivos espec&#237;ficas no sistema operacional.</p><h2>Lideran&#231;a t&#233;cnica</h2><p><strong><a href="https://seangoedecke.com/saying-the-obvious-thing/?utm_source=techleadsclub&amp;utm_medium=newsletter&amp;utm_term=84">Saying the obvious thing</a></strong></p><p>Sean Goedecke defende que enunciar o &#243;bvio &#233; surpreendentemente &#250;til e dif&#237;cil, porque boa parte do conhecimento vive abaixo da consci&#234;ncia, e sustenta que escrever verdades evidentes alinha times em documentos t&#233;cnicos, tira desenvolvedores juniores da sensa&#231;&#227;o de estar enlouquecendo e abre caminho para articular as camadas menos &#243;bvias que v&#234;m depois.</p><p><strong><a href="https://newsletter.systemdesigncodex.com/p/how-to-explain-tech-stuff-to-non?utm_source=techleadsclub&amp;utm_medium=newsletter&amp;utm_term=84">How to Explain Tech Stuff to Non-Tech Colleagues</a></strong></p><p>Saurabh Dashora apresenta seu modelo de &#8220;iceberg da comunica&#231;&#227;o&#8221; para traduzir conceitos t&#233;cnicos a colegas n&#227;o t&#233;cnicos, combinando t&#225;ticas gerais, como analogias, storytelling e recursos visuais, com abordagens ajustadas para gestores, times de vendas e clientes.</p><p><strong><a href="https://newsletter.nagringa.dev/p/radar-nagringa-5-quanto-paga-trabalhar-na-gringa?utm_source=techleadsclub&amp;utm_medium=newsletter&amp;utm_term=84">Radar NaGringa #5: quanto paga o mercado gringo para quem est&#225; no Brasil</a></strong></p><p>Lucas Faria cruza dados do portal NaGringa e de relat&#243;rios do Pragmatic Engineer para mapear quanto o mercado internacional paga a quem trabalha do Brasil, apontando mediana de US$ 189 mil para vagas remotas senior e staff e argumentando que n&#237;vel e a fronteira cruzada pesam mais na remunera&#231;&#227;o do que a linguagem de programa&#231;&#227;o.</p><p><strong><a href="https://newsletter.nagringa.dev/p/como-receber-da-gringa-2026-impostos-cambio?utm_source=techleadsclub&amp;utm_medium=newsletter&amp;utm_term=84">Quanto imposto eu pago trabalhando pra fora (a conta real de 2026)</a></strong></p><p>Lucas Faria detalha seu setup tribut&#225;rio de 2026 para quem presta servi&#231;o a empresas de fora, comparando PJ e CLT, Simples Nacional e Lucro Presumido, e explicando a nova Lei 15.270/2025, que passou a reter 10% sobre distribui&#231;&#245;es de lucro acima de R$ 50 mil por m&#234;s como antecipa&#231;&#227;o do imposto m&#237;nimo da alta renda.</p><p><strong><a href="https://fs.blog/knowledge-project-podcast/performance-psychologist-mindset/?utm_source=techleadsclub&amp;utm_medium=newsletter&amp;utm_term=84">The Mindset That Unlocks Your Full Potential | Dr. Gio Valiante</a></strong></p><p>No podcast The Knowledge Project, Shane Parrish entrevista o psic&#243;logo de performance Gio Valiante, que atende nomes como Rory McIlroy, sobre por que a maioria das pessoas n&#227;o atinge seu potencial e como confian&#231;a, medo e h&#225;bitos moldam o desempenho sob press&#227;o.</p><h2>Ferramentas</h2><p><strong><a href="https://javascriptweekly.com/link/187214/rss?utm_source=techleadsclub&amp;utm_medium=newsletter&amp;utm_term=84">Deno 2.9 Released</a></strong></p><p>A equipe do Deno lan&#231;a a vers&#227;o 2.9 do runtime, que estreia o &#8220;deno desktop&#8221; para empacotar scripts e projetos em apps desktop nativos e autocontidos, migra lockfiles de npm, pnpm, Yarn e Bun, melhora o test runner, dobra a velocidade de cold start e mira compatibilidade com o Node.js 26.</p><p><strong><a href="https://javascriptweekly.com/link/187215/rss?utm_source=techleadsclub&amp;utm_medium=newsletter&amp;utm_term=84">Iterating Faster on VS Code with TypeScript 7</a></strong></p><p>A equipe do VS Code relata como adotou de forma incremental o compilador TypeScript 7 escrito em Go, ainda em release candidate, reduzindo a checagem de tipos do c&#243;digo-fonte de 36 para 5 segundos e o &#8220;npm run watch&#8221; de 80 para cerca de 20 segundos.</p><p><strong><a href="https://rubyweekly.com/link/187383/rss?utm_source=techleadsclub&amp;utm_medium=newsletter&amp;utm_term=84">Hanami 3.0: The Ruby Framework in Full Bloom</a></strong></p><p>Tim Riley anuncia o Hanami 3.0, vers&#227;o do framework Ruby modular que passa a incluir mailers, internacionaliza&#231;&#227;o e suporte a Minitest, al&#233;m de ganhos de performance, refor&#231;ando a proposta de deixar o desenvolvedor escolher apenas os componentes que precisa.</p><p><strong><a href="https://javascriptweekly.com/link/187230/rss?utm_source=techleadsclub&amp;utm_medium=newsletter&amp;utm_term=84">Why Drizzle Couldn&#8217;t Publish New Releases on npm for a Month</a></strong></p><p>Evert Pot explica por que os criadores do popular ORM Drizzle ficaram um m&#234;s sem conseguir publicar novas vers&#245;es no npm e oferece dicas para outros desenvolvedores identificarem se est&#227;o sujeitos ao mesmo problema e como evit&#225;-lo.</p><p><strong><a href="https://labs.iximiuz.com/tutorials/ssh-tunnels?utm_source=techleadsclub&amp;utm_medium=newsletter&amp;utm_term=84">A Practical Guide to SSH Tunnels: Local and Remote Port Forwarding | iximiuz Labs</a></strong></p><p>Ivan Velichko explica como usar t&#250;neis SSH para encaminhar portas locais e remotas, permitindo acesso seguro a servi&#231;os atrav&#233;s de conex&#245;es criptografadas.</p><p><strong><a href="https://github.com/workweave/router?utm_source=techleadsclub&amp;utm_medium=newsletter&amp;utm_term=84">workweave/router: Model router for agentic systems. Routes every prompt to the right model in &lt;50ms. Cut costs 40-70% with just an endpoint change.</a></strong></p><div class="captioned-button-wrap" data-attrs="{&quot;url&quot;:&quot;https://techleadsclub.substack.com/p/newsletter-84?utm_source=substack&utm_medium=email&utm_content=share&action=share&quot;,&quot;text&quot;:&quot;Compartilhar&quot;}" data-component-name="CaptionedButtonToDOM"><div class="preamble"><p class="cta-caption">Est&#225; gostando da newsletter? Deixe um like e compartilhe com seus amigos e colegas &#128588;</p></div><p class="button-wrapper" data-attrs="{&quot;url&quot;:&quot;https://techleadsclub.substack.com/p/newsletter-84?utm_source=substack&utm_medium=email&utm_content=share&action=share&quot;,&quot;text&quot;:&quot;Compartilhar&quot;}" data-component-name="ButtonCreateButton"><a class="button primary" href="/__u/techleadsclub.substack.com/p/newsletter-84?utm_source=substack&amp;utm_medium=email&amp;utm_content=share&amp;action=share"><span>Compartilhar</span></a></p></div>]]></content:encoded></item><item><title><![CDATA[🗞️ Newsletter #83]]></title><description><![CDATA[Slow down to speed up da Pragmatic Engineer, IA &#233; lucrativa por si s&#243;, Spec-driven &#233; decis&#227;o de governan&#231;a, Uber mede impacto de IA e mais]]></description><link>https://techleadsclub.substack.com/p/newsletter-83</link><guid isPermaLink="false">https://techleadsclub.substack.com/p/newsletter-83</guid><dc:creator><![CDATA[William Calderipe]]></dc:creator><pubDate>Fri, 26 Jun 2026 17:27:41 GMT</pubDate><enclosure url="https://substackcdn.com/image/youtube/w_728,c_limit/5wks1W-auKY" length="0" type="image/jpeg"/><content:encoded><![CDATA[<h2>Destaques</h2><div id="youtube2-5wks1W-auKY" class="youtube-wrap" data-attrs="{&quot;videoId&quot;:&quot;5wks1W-auKY&quot;,&quot;startTime&quot;:null,&quot;endTime&quot;:null}" data-component-name="Youtube2ToDOM"><div class="youtube-inner"><iframe src="https://www.youtube-nocookie.com/embed/5wks1W-auKY?rel=0&amp;autoplay=0&amp;showinfo=0&amp;enablejsapi=0" frameborder="0" loading="lazy" gesture="media" allow="autoplay; fullscreen" allowautoplay="true" allowfullscreen="true" width="728" height="409"></iframe></div></div><p>Gergely Orosz, da Pragmatic Engineer, argumenta que a engenharia de software se transformou nos &#250;ltimos seis meses com a chegada de agentes mais capazes, e relaciona a pior falha da hist&#243;ria da Meta a c&#243;digo gerado e revisado por IA somado ao esvaziamento das equipes de seguran&#231;a e confiabilidade.</p><h2>Favoritos</h2><p><strong><a href="https://seangoedecke.com/ai-inference-is-obviously-profitable/?utm_source=techleadsclub&amp;utm_medium=newsletter&amp;utm_term=83">AI inference is obviously profitable</a></strong></p><p>Sean Goedecke sustenta que a infer&#234;ncia de IA &#233; lucrativa por si s&#243;, com margens estimadas de 70% a 80%, e que, mesmo que laborat&#243;rios como OpenAI e Anthropic quebrem por causa dos custos de treinamento, quem assumir os modelos continuar&#225; vendendo infer&#234;ncia com lucro.</p><p><strong><a href="/__u/alklaser.substack.com/p/o-iconoclasta-otimista-edicao-33?utm_source=techleadsclub&amp;utm_medium=newsletter&amp;utm_term=83">Spec-driven development &#233; uma decis&#227;o de governan&#231;a, n&#227;o de engenharia</a></strong></p><p>Alexandre Klaser defende que adotar spec-driven development &#233; uma decis&#227;o de governan&#231;a, n&#227;o de engenharia, porque o que prende a empresa deixou de ser o modelo de IA e passou a ser o loop que aprova o que vai para produ&#231;&#227;o, hoje cada vez mais controlado pelo fornecedor.</p><p><strong><a href="https://newsletter.getdx.com/p/ubers-journey-of-measuring-ai-impact?utm_source=techleadsclub&amp;utm_medium=newsletter&amp;utm_term=83">Uber&#8217;s journey of measuring AI impact on developer productivity</a></strong></p><p>Ty Smith e Abhishek Tibrewal, da Uber, relatam como a empresa abandonou a m&#233;trica de anos de desenvolvedor economizados para medir o impacto da IA e passou a usar a velocidade de entrega de features como novo norte, j&#225; que uma &#250;nica tarefa de agente pode gerar muitos pull requests sem criar valor real.</p><p><strong><a href="https://blog.bytebytego.com/p/ai-native-leaders-the-organizational?utm_source=techleadsclub&amp;utm_medium=newsletter&amp;utm_term=83">AI-Native Leaders: The Organizational Playbook for Engineering Transformation at Scale</a></strong></p><p>A ByteByteGo apresenta um manual organizacional para a transforma&#231;&#227;o de engenharia com IA baseado em times pequenos, Agent Champions dedicados e um modelo de dono &#250;nico por tarefa, sustentando que cerca de 70% do sucesso vem de mudan&#231;a operacional e cultural, e n&#227;o da ado&#231;&#227;o de ferramentas.</p><p><strong><a href="https://newsletter.posthog.com/p/we-used-ai-to-5x-conversion-and-2x?utm_source=techleadsclub&amp;utm_medium=newsletter&amp;utm_term=83">We used context engineering to 5x conversion and 2x activation</a></strong></p><p>A PostHog conta como sua equipe de documenta&#231;&#227;o virou um time de engenharia de contexto e construiu uma infraestrutura, o context mill, para abastecer seu agente de onboarding, elevando a convers&#227;o paga de 2,6% para 14,2% e reduzindo o tempo at&#233; o primeiro evento de 3,8 para 1,9 hora.</p><p><strong><a href="https://brandur.org/minimum-viable-unit?utm_source=techleadsclub&amp;utm_medium=newsletter&amp;utm_term=83">The Minimum Viable Unit of Saleable Software</a></strong></p><p>Brandur Leach argumenta que, apesar de os LLMs terem barateado a constru&#231;&#227;o de software, o neg&#243;cio de software continua vi&#225;vel dentro de uma zona em que comprar ainda sai mais barato que reconstruir internamente, o que exige complexidade suficiente para resistir a uma recria&#231;&#227;o por IA e pre&#231;o baixo o bastante para desencoraj&#225;-la.</p><h2>AI</h2><p><strong><a href="https://blog.bytebytego.com/p/an-ex-meta-l8s-agentic-engineering?utm_source=techleadsclub&amp;utm_medium=newsletter&amp;utm_term=83">An Ex-Meta L8&#8217;s Agentic Engineering Setup</a></strong></p><p>A ByteByteGo detalha o setup de engenharia ag&#234;ntica de um ex-engenheiro principal L8 da Meta, centrado no terminal, no qual ele atua como um gerente que dirige um time de agentes e usa ferramentas pr&#243;prias de c&#243;digo aberto para planejar, implementar e revisar, chegando a mais de 30 pull requests por dia.</p><p><strong><a href="https://newsletter.getdx.com/p/beyond-the-cli-agentic-ai-for-async?utm_source=techleadsclub&amp;utm_medium=newsletter&amp;utm_term=83">Beyond the CLI: Agentic AI for async workloads and non-developers</a></strong></p><p>Christopher Sanson e Madison Capps, do Airbnb, relatam que a empresa atingiu 97% de uso semanal de IA ag&#234;ntica entre engenheiros sem impor metas, registrou aumento de 65% no volume de pull requests e cerca de 59% do c&#243;digo escrito majoritariamente por IA, e agora investe em fluxos de agentes ass&#237;ncronos.</p><p><strong><a href="https://newsletter.getdx.com/p/revisiting-the-dx-core-4?utm_source=techleadsclub&amp;utm_medium=newsletter&amp;utm_term=83">Revisiting the DX Core 4 in the age of AI</a></strong></p><p>Brian Houck, da DX, argumenta que o framework Core 4 continua v&#225;lido na era da IA por medir resultados de neg&#243;cio em vez da mec&#226;nica da escrita de c&#243;digo, e defende tratar a telemetria de IA como contexto diagn&#243;stico, citando aumento de 7,8% no volume de pull requests e 27,4% do c&#243;digo de produ&#231;&#227;o gerado por IA.</p><p><strong><a href="https://dropbox.tech/machine-learning/how-we-turned-ai-evaluations-into-better-responses-in-dash-chat?utm_source=techleadsclub&amp;utm_medium=newsletter&amp;utm_term=83">How we used DSPy to turn AI evaluations into better responses in Dash chat</a></strong></p><p>A Dropbox descreve como usou o framework DSPy, com os algoritmos GEPA e MIPROv2, para calibrar seus ju&#237;zes LLM contra r&#243;tulos humanos e depois otimizar o prompt do agente do Dash chat, reduzindo em 26% as respostas incompletas e em 5,4% o uso de tokens sem perda de qualidade.</p><p><strong><a href="https://blog.bytebytego.com/p/large-language-models-vs-small-language?utm_source=techleadsclub&amp;utm_medium=newsletter&amp;utm_term=83">Large Language Models vs Small Language Models</a></strong></p><p>A ByteByteGo explica que modelos de linguagem pequenos e grandes respondem a restri&#231;&#245;es diferentes de implanta&#231;&#227;o, custo de infer&#234;ncia e or&#231;amento de treino, com os pequenos rodando em dispositivos e os grandes em data centers, e mostra como Apple, Google, Microsoft e Meta combinam os dois em produ&#231;&#227;o.</p><p><strong><a href="https://www.fernandoi.cl/posts/hackmyclaw/?utm_source=techleadsclub&amp;utm_medium=newsletter&amp;utm_term=83">What happened after 2k people tried to hack my AI assistant</a></strong></p><p>Fernando Irarr&#225;zaval relata o desafio p&#250;blico hackmyclaw, em que mais de 2 mil pessoas enviaram mais de 6 mil e-mails tentando fazer seu assistente de IA vazar um arquivo de credenciais, sem nenhuma extra&#231;&#227;o bem-sucedida, o que o deixou mais otimista sobre a resist&#234;ncia dos modelos a prompt injection.</p><p><strong><a href="https://blog.cloudflare.com/temporary-accounts/?utm_source=techleadsclub&amp;utm_medium=newsletter&amp;utm_term=83">Temporary Cloudflare Accounts for AI Agents</a></strong></p><p>A Cloudflare introduz contas tempor&#225;rias para agentes de IA, um mecanismo de credenciais de curta dura&#231;&#227;o e escopo restrito para que agentes acessem recursos da plataforma sem usar as credenciais permanentes da conta do usu&#225;rio.</p><p><strong><a href="https://vickiboykis.com/2026/06/15/running-local-models-is-good-now/?utm_source=techleadsclub&amp;utm_medium=newsletter&amp;utm_term=83">Running local models is good now</a></strong></p><p>Vicki Boykis afirma que rodar modelos localmente ficou bom agora, relatando que, num MacBook M2 com 64 GB de RAM e modelos como o Gemma 4, fluxos de codifica&#231;&#227;o ag&#234;ntica j&#225; alcan&#231;am cerca de 75% da precis&#227;o e da velocidade dos modelos de fronteira em tarefas que eram invi&#225;veis localmente seis meses atr&#225;s.</p><p><strong><a href="https://vinibrasil.com/when-i-reject-ai-code-even-if-it-works/?utm_source=techleadsclub&amp;utm_medium=newsletter&amp;utm_term=83">When I reject AI code even if it works &#8212; Vinicius Brasil</a></strong></p><p>Vinicius Brasil explica por que rejeita c&#243;digo gerado por IA mesmo quando ele funciona, citando sinais como n&#227;o conseguir explicar a abordagem com as pr&#243;prias palavras, diffs maiores que o problema e abstra&#231;&#245;es prematuras, e defende que c&#243;digo que passa no CI ainda pode ser uma solu&#231;&#227;o ruim.</p><h2>Arquitetura</h2><p><strong><a href="https://blog.bytebytego.com/p/top-anti-patterns-to-avoid-in-service?utm_source=techleadsclub&amp;utm_medium=newsletter&amp;utm_term=83">Top Anti-Patterns to Avoid in Service Architecture</a></strong></p><p>A ByteByteGo argumenta que a maioria dos anti-padr&#245;es em arquitetura de servi&#231;os nasce de uma decis&#227;o precoce sobre como dividir o sistema e do fato de que chamadas entre servi&#231;os cruzam a rede, ficando sujeitas a lat&#234;ncia, timeouts e falhas parciais que uma chamada de fun&#231;&#227;o dentro de um &#250;nico programa n&#227;o tem.</p><p><strong><a href="https://newsletter.systemdesigncodex.com/p/monolith-to-service-architecture?utm_source=techleadsclub&amp;utm_medium=newsletter&amp;utm_term=83">Monolith to Service Architecture</a></strong></p><p>Saurabh Dashora descreve quatro padr&#245;es para migrar de um monolito para arquitetura de servi&#231;os de forma incremental: Strangler Fig, que roteia tr&#225;fego por um gateway enquanto o monolito encolhe, Parallel Run, que roda monolito e servi&#231;os lado a lado para comparar resultados, Collaborator, que envolve o monolito com novos servi&#231;os sem alterar seu n&#250;cleo, e Change Data Capture, que sincroniza dados via logs de transa&#231;&#227;o.</p><p><strong><a href="https://postgresweekly.com/link/186973/rss?utm_source=techleadsclub&amp;utm_medium=newsletter&amp;utm_term=83">Postgres 18 Performance Enhancements</a></strong></p><p>Um tour pelas melhorias de performance do Postgres 18, incluindo otimiza&#231;&#227;o de skip scan, elimina&#231;&#227;o de self-join e ajustes de autovacuum, escrito sob a &#243;tica da AWS, mas aplic&#225;vel a qualquer uso do Postgres 18.</p><p><strong><a href="https://postgresweekly.com/link/186969/rss?utm_source=techleadsclub&amp;utm_medium=newsletter&amp;utm_term=83">Looking Ahead to Postgres 19</a></strong></p><p>Craig Kerstiens antecipa o Postgres 19 destacando melhorias de qualidade de vida tanto no n&#237;vel operacional, como REPACK e avan&#231;os em particionamento, quanto em SQL, como SQL/PGQ e GROUP BY ALL.</p><p><strong><a href="https://postgresweekly.com/link/186971/rss?utm_source=techleadsclub&amp;utm_medium=newsletter&amp;utm_term=83">What&#8217;s Missing in Postgres?</a></strong></p><p>Bruce Momjian discute o que ainda falta no Postgres e por qu&#234;, passando por sharding, connection pooling, armazenamento colunar e criptografia transparente de dados.</p><h2>Lideran&#231;a t&#233;cnica</h2><p><strong><a href="https://newsletter.getdx.com/p/the-future-of-engineering-at-nationwide?utm_source=techleadsclub&amp;utm_medium=newsletter&amp;utm_term=83">The future of engineering at Nationwide, Comcast, TD, and HPE</a></strong></p><p>Em painel da DX, l&#237;deres de engenharia da Nationwide, Comcast, TD Bank e HPE defendem que adotar IA &#233; redesenhar o ciclo de desenvolvimento de software, e n&#227;o apenas adicionar ferramentas, que treino e suporte organizacional pesam mais que a escolha da ferramenta, que humanos continuam respons&#225;veis pelos resultados e que engenheiros migram de implementadores para orquestradores.</p><p><strong><a href="/__u/fidelissauro.substack.com/p/artigo-novo-staff-framework-tornando?utm_source=techleadsclub&amp;utm_medium=newsletter&amp;utm_term=83">Artigo Novo: Staff Framework - Tornando Desejos em Metas Verific&#225;veis (SMART Method)</a></strong></p><p>Matheus Fidelis inaugura uma s&#233;rie sobre carreira Staff+ defendendo que traduzir desejos vagos da lideran&#231;a, como precisamos melhorar o login, em metas verific&#225;veis &#233; parte central do papel, e prop&#245;e o m&#233;todo SMART, espec&#237;fico, mensur&#225;vel, alcan&#231;&#225;vel, relevante e limitado no tempo, como ponte entre inten&#231;&#227;o estrat&#233;gica e execu&#231;&#227;o t&#233;cnica.</p><p><strong><a href="https://newsletter.pragmaticengineer.com/p/tech-interviews-with-neetcode?utm_source=techleadsclub&amp;utm_medium=newsletter&amp;utm_term=83">Tech interviews with NeetCode</a></strong></p><p>Gergely Orosz entrevista Navdeep Singh, o NeetCode, ex-engenheiro de Amazon e Google e criador do NeetCode.io, sobre o que a prepara&#231;&#227;o para entrevistas ensina al&#233;m de passar nelas, por que aprender coisas dif&#237;ceis segue sendo um dos melhores investimentos de um engenheiro, e como o Google retomou entrevistas presenciais para conter o uso de IA para colar.</p><p><strong><a href="https://newsletter.nagringa.dev/p/o-pulo-de-carreira-que-voce-nao-sabia?utm_source=techleadsclub&amp;utm_medium=newsletter&amp;utm_term=83">O pulo de carreira que voc&#234; n&#227;o sabia que precisava</a></strong></p><p>Andressa Chiara argumenta que acumular cursos avulsos, ebooks e PDFs de prepara&#231;&#227;o para trabalhar fora n&#227;o vira preparo de verdade, e defende consolidar a jornada em um caminho &#250;nico, no qual d&#225; para ver o progresso, em vez de fragmentos vendidos &#224; parte.</p><h2>Ferramentas</h2><p><strong><a href="https://javascriptweekly.com/link/186913/rss?utm_source=techleadsclub&amp;utm_medium=newsletter&amp;utm_term=83">TypeScript 7.0 Release Candidate</a></strong></p><p>Chega o Release Candidate do TypeScript 7.0, com o compilador reescrito em Go que promete builds cerca de dez vezes mais r&#225;pidas.</p><p><strong><a href="https://github.com/GoogleCloudPlatform/knowledge-catalog/tree/main?utm_source=techleadsclub&amp;utm_medium=newsletter&amp;utm_term=83">GoogleCloudPlatform/knowledge-catalog: Google Cloud Knowledge Catalog Tools and Samples</a></strong></p><p>O Google Cloud apresenta o Knowledge Catalog, um cat&#225;logo de dados com IA que monta um grafo de conhecimento dos dados estruturados e n&#227;o estruturados da empresa para dar sem&#226;ntica e contexto de neg&#243;cio a agentes de IA, com o reposit&#243;rio reunindo ferramentas e exemplos de uso.</p><p><strong><a href="https://hackernewstrends.com/?utm_source=techleadsclub&amp;utm_medium=newsletter&amp;utm_term=83">Hacker Trends: 18 years of Hacker News, charted</a></strong></p><p>A Upstash lan&#231;a o Hacker Trends, uma ferramenta de busca e visualiza&#231;&#227;o que mapeia como temas, tecnologias e pessoas foram discutidos em 18 anos e 45 milh&#245;es de posts do Hacker News, permitindo sobrepor termos e acompanhar sua tra&#231;&#227;o subir e cair ao longo do tempo.</p><div class="captioned-button-wrap" data-attrs="{&quot;url&quot;:&quot;https://techleadsclub.substack.com/p/newsletter-83?utm_source=substack&utm_medium=email&utm_content=share&action=share&quot;,&quot;text&quot;:&quot;Compartilhar&quot;}" data-component-name="CaptionedButtonToDOM"><div class="preamble"><p class="cta-caption">Est&#225; 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Deixe um like e compartilhe com seus amigos e colegas &#128588;</p></div><p class="button-wrapper" data-attrs="{&quot;url&quot;:&quot;https://techleadsclub.substack.com/p/newsletter-83?utm_source=substack&utm_medium=email&utm_content=share&action=share&quot;,&quot;text&quot;:&quot;Compartilhar&quot;}" data-component-name="ButtonCreateButton"><a class="button primary" href="/__u/techleadsclub.substack.com/p/newsletter-83?utm_source=substack&amp;utm_medium=email&amp;utm_content=share&amp;action=share"><span>Compartilhar</span></a></p></div>]]></content:encoded></item><item><title><![CDATA[🗞️ Newsletter #82]]></title><description><![CDATA[Benchmark de Frameworks de Spec Driven, Meta destruindo organiza&#231;&#227;o de engenharia, C&#243;digo escrito por IA chega a 52%, Rails escalado para 41M requests/hora e mais]]></description><link>https://techleadsclub.substack.com/p/newsletter-82</link><guid isPermaLink="false">https://techleadsclub.substack.com/p/newsletter-82</guid><dc:creator><![CDATA[William Calderipe]]></dc:creator><pubDate>Sun, 21 Jun 2026 15:27:58 GMT</pubDate><enclosure url="https://substackcdn.com/image/youtube/w_728,c_limit/gK1atE0ssfg" length="0" type="image/jpeg"/><content:encoded><![CDATA[<h2>Destaques</h2><div id="youtube2-gK1atE0ssfg" class="youtube-wrap" data-attrs="{&quot;videoId&quot;:&quot;gK1atE0ssfg&quot;,&quot;startTime&quot;:null,&quot;endTime&quot;:null}" data-component-name="Youtube2ToDOM"><div class="youtube-inner"><iframe src="https://www.youtube-nocookie.com/embed/gK1atE0ssfg?rel=0&amp;autoplay=0&amp;showinfo=0&amp;enablejsapi=0" frameborder="0" loading="lazy" gesture="media" allow="autoplay; fullscreen" allowautoplay="true" allowfullscreen="true" width="728" height="409"></iframe></div></div><p>Waldemar Neto gastou mais de $2.000 testando quatro frameworks de Spec Driven Development contra um modelo puro usando Claude Opus 4.8, em uma metodologia que avaliou extra&#231;&#227;o de requisitos, qualidade de c&#243;digo, testabilidade e custo em tokens.</p><h2>Favoritos</h2><p><strong><a href="https://newsletter.pragmaticengineer.com/p/why-is-meta-destroying-its-engineering?utm_source=techleadsclub&amp;utm_medium=newsletter&amp;utm_term=82">Why is Meta destroying its engineering organization?</a></strong></p><p>A lideran&#231;a da Meta realoca de 30% a 50% dos engenheiros centrais para rotular dados de treinamento de IA, adota monitoramento de teclas e corta 10% do quadro, priorizando o desenvolvimento de modelos sobre a confiabilidade dos produtos.</p><p><strong><a href="https://newsletter.getdx.com/p/ai-authored-code-has-nearly-doubled?utm_source=techleadsclub&amp;utm_medium=newsletter&amp;utm_term=82">AI-authored code has nearly doubled, but so has PR size</a></strong></p><p>C&#243;digo escrito por IA j&#225; representa cerca de 52% do total produzido, enquanto o tamanho mediano dos pull requests quase dobrou, de 44 para 72 linhas no mesmo per&#237;odo.</p><p><strong><a href="https://martinfowler.com/articles/reliable-llm-bayer.html?utm_source=techleadsclub&amp;utm_medium=newsletter&amp;utm_term=82">Building Reliable Agentic AI Systems</a></strong></p><p>Martin Fowler e equipe mostram que sistemas ag&#234;nticos prontos para produ&#231;&#227;o exigem duas disciplinas complementares: engenharia de contexto, que entrega a informa&#231;&#227;o certa a cada agente, e engenharia de harness, que cuida de orquestra&#231;&#227;o, persist&#234;ncia de estado, recupera&#231;&#227;o de erros e observabilidade.</p><p><strong><a href="/__u/addyo.substack.com/p/agentic-code-review?utm_source=techleadsclub&amp;utm_medium=newsletter&amp;utm_term=82">Agentic Code Review</a></strong></p><p>Addy Osmani argumenta que, com agentes gerando c&#243;digo em velocidade de m&#225;quina, a capacidade humana de revis&#227;o virou o gargalo da entrega e a habilidade de maior alavancagem na engenharia de software.</p><p><strong><a href="/__u/alklaser.substack.com/p/o-iconoclasta-otimista-edicao-32?utm_source=techleadsclub&amp;utm_medium=newsletter&amp;utm_term=82">Por que voc&#234; n&#227;o consegue medir o ROI da IA</a></strong></p><p>Alexandre Klaser argumenta que a dificuldade de medir o ROI da IA vem do uso da r&#233;gua errada: a m&#233;trica de projeto avalia a tecnologia, enquanto o retorno real est&#225; na transforma&#231;&#227;o organizacional, em processos redesenhados e em melhores decis&#245;es, que aparecem depois e fora do P&amp;L.</p><h2>AI</h2><p><strong><a href="https://refactoring.fm/p/how-to-make-ai-better-at-product?utm_source=techleadsclub&amp;utm_medium=newsletter&amp;utm_term=82">How to make AI better at product &#127912;</a></strong></p><p>Luca Rossi prop&#245;e sistematizar decis&#245;es de produto para uso com IA por meio de pr&#225;ticas de documenta&#231;&#227;o da engenharia, como Product Decision Records e um gloss&#225;rio compartilhado que ancoram a IA em escolhas passadas e no vocabul&#225;rio do dom&#237;nio.</p><p><strong><a href="https://newsletter.pragmaticengineer.com/p/the-pulse-big-implications-of-us?utm_source=techleadsclub&amp;utm_medium=newsletter&amp;utm_term=82">The Pulse: Big implications of US banning Anthropic&#8217;s new model, Fable</a></strong></p><p>O governo americano restringiu o modelo Fable da Anthropic apenas para cidad&#227;os dos EUA, potencialmente aumentando a influ&#234;ncia chinesa em IA globalmente.</p><p><strong><a href="https://arstechnica.com/ai/2026/06/anthropic-pauses-token-based-billing-for-its-claude-agent-sdk/?utm_source=techleadsclub&amp;utm_medium=newsletter&amp;utm_term=82">Anthropic pauses token-based billing for its Claude Agent SDK</a></strong></p><p><strong><a href="https://ianbarber.blog/2026/06/19/llms-are-complicated-now/?utm_source=techleadsclub&amp;utm_medium=newsletter&amp;utm_term=82">LLMs Are Complicated Now</a></strong></p><p>LLMs evolu&#237;ram de modelos simples para sistemas complexos com m&#250;ltiplas variantes, t&#233;cnicas de otimiza&#231;&#227;o e considera&#231;&#245;es de infraestrutura que exigem expertise especializada.</p><p><strong><a href="https://blog.bytebytego.com/p/how-open-weight-models-changed-the?utm_source=techleadsclub&amp;utm_medium=newsletter&amp;utm_term=82">How Open-Weight Models Changed the AI Landscape</a></strong></p><p>Equipes de IA chinesas colaboram indiretamente atrav&#233;s de modelos open-weight, onde empresas como DeepSeek, Moonshot AI e Zhipu AI compartilham inova&#231;&#245;es t&#233;cnicas que aceleram o desenvolvimento coletivo da arquitetura MoE (Mixture-of-Experts).</p><p><strong><a href="https://stripe.com/blog/what-link-data-tells-us-about-ai-spending?utm_source=techleadsclub&amp;utm_medium=newsletter&amp;utm_term=82">What Link data tells us about AI spending</a></strong></p><p>Dados do Stripe Link mostram que 250 milh&#245;es de clientes aumentaram gastos com IA nos &#250;ltimos tr&#234;s meses, priorizando plataformas de desenvolvimento.</p><p><strong><a href="https://newsletter.posthog.com/p/why-were-bullish-on-loops?utm_source=techleadsclub&amp;utm_medium=newsletter&amp;utm_term=82">Why we&#8217;re bullish on loops</a></strong></p><p>PostHog defende loops automatizados onde agentes de IA escrevem c&#243;digo para si mesmos, executam tarefas longas e permitem m&#250;ltiplos agentes trabalharem simultaneamente, requerendo meta, contexto, avalia&#231;&#227;o e o pr&#243;prio agente para funcionar.</p><h2>Arquitetura</h2><p><strong><a href="https://rubyweekly.com/link/186769/rss?utm_source=techleadsclub&amp;utm_medium=newsletter&amp;utm_term=82">Scaling Rails for a Peak Load of 41M Requests/Hour</a></strong></p><p>Andrew Atkinson detalha como um servi&#231;o de porta-retratos digital escalou sua aplica&#231;&#227;o Rails para o pico de 41 milh&#245;es de requisi&#231;&#245;es por hora no Natal, dividindo o banco prim&#225;rio em oito e combinando m&#250;ltiplos bancos nativos, disable_joins e pagina&#231;&#227;o por keyset.</p><p><strong><a href="https://postgresweekly.com/link/186645/rss?utm_source=techleadsclub&amp;utm_medium=newsletter&amp;utm_term=82">The Only Scalable Delete in Postgres is DROP TABLE</a></strong></p><p>Tom Pang, da PlanetScale, mostra que grandes opera&#231;&#245;es de DELETE no Postgres custam mais do que parece e que reescrever a exclus&#227;o como DROP ou TRUNCATE resolve melhor em alguns cen&#225;rios.</p><p><strong><a href="https://blog.bytebytego.com/p/observability-for-beginners-logs?utm_source=techleadsclub&amp;utm_medium=newsletter&amp;utm_term=82">Observability for Beginners: Logs, Metrics, Traces, and Everything Around Them</a></strong></p><p>Observability captura eventos de sistemas atrav&#233;s de logs (eventos individuais como texto), m&#233;tricas (agrega&#231;&#227;o de eventos) e traces (eventos relacionados entre servi&#231;os).</p><p><strong><a href="https://newsletter.systemdesigncodex.com/p/how-to-scale-kubernetes?utm_source=techleadsclub&amp;utm_medium=newsletter&amp;utm_term=82">How to Scale Kubernetes</a></strong></p><p>Kubernetes oferece tr&#234;s estrat&#233;gias principais de escalabilidade: HPA aumenta o n&#250;mero de pods com base em m&#233;tricas como CPU, VPA ajusta recursos de CPU e mem&#243;ria dos pods existentes, e Cluster Autoscaler adiciona ou remove n&#243;s da infraestrutura automaticamente.</p><p><strong><a href="https://newsletter.pragmaticengineer.com/p/cicd-with-robert-erez?utm_source=techleadsclub&amp;utm_medium=newsletter&amp;utm_term=82">CI/CD with Robert Erez</a></strong></p><p>Gergely Orosz entrevista Robert Erez sobre pr&#225;ticas modernas de CI/CD, cobrindo desde rollbacks at&#233; o impacto da IA em pipelines de deployment.</p><p><strong><a href="https://postgresweekly.com/link/186644/rss?utm_source=techleadsclub&amp;utm_medium=newsletter&amp;utm_term=82">Scaling Postgres to 226k TPS: A Christmas Day Retrospective</a></strong></p><p>Andrew Atkinson alcan&#231;ou 226k TPS no PostgreSQL durante o Christmas Day Challenge usando otimiza&#231;&#245;es de hardware, configura&#231;&#245;es espec&#237;ficas e t&#233;cnicas de escalonamento.</p><p><strong><a href="https://www.jvm-weekly.com/p/project-valhalla-explained-how-a?utm_source=techleadsclub&amp;utm_medium=newsletter&amp;utm_term=82">Project Valhalla, Explained: How a Decade of Work Arrives in JDK 28</a></strong></p><p>O Projeto Valhalla introduzir&#225; value objects e primitive classes no JDK 28 ap&#243;s uma d&#233;cada de desenvolvimento para melhorar performance e uso de mem&#243;ria.</p><h2>Lideran&#231;a t&#233;cnica</h2><p><strong><a href="https://www.jvt.me/posts/2026/06/18/ai-adoption-commits/?utm_medium=rss&amp;utm_source=rss&amp;utm_source=techleadsclub&amp;utm_medium=newsletter&amp;utm_term=82">Determining adoption of AI through Git commits</a></strong></p><p>Desenvolvedor usa script Git para analisar commits com tag &#8220;co-authored-by&#8221; e medir ado&#231;&#227;o de IA em seus projetos ao longo do tempo.</p><p><strong><a href="https://newsletter.nagringa.dev/p/radar-nagringa-3-ai-infraestrutura?utm_source=techleadsclub&amp;utm_medium=newsletter&amp;utm_term=82">Radar NaGringa #3: AI, infraestrutura e vagas at&#233; US$ 290k para brasileiros</a></strong></p><p>Lucas Faria destaca 8 vagas internacionais para brasileiros em IA, infraestrutura e backend, com sal&#225;rios at&#233; US$ 290k anuais, incluindo posi&#231;&#245;es na Firecrawl, Deepgram, Nango, Circle, Railway, Brex, Housecall Pro e Panoptyc.</p><h2>Ferramentas</h2><p><strong><a href="https://golangweekly.com/link/186870/rss?utm_source=techleadsclub&amp;utm_medium=newsletter&amp;utm_term=82">Go 1.27 Release Candidate 1 Released</a></strong></p><p><strong><a href="https://postgresweekly.com/link/186677/rss?utm_source=techleadsclub&amp;utm_medium=newsletter&amp;utm_term=82">pg_ducklake 1.0: A Native Lakehouse in Postgres</a></strong></p><p><strong><a href="https://javascriptweekly.com/link/186589/rss?utm_source=techleadsclub&amp;utm_medium=newsletter&amp;utm_term=82">React Libraries and Tools for 2026</a></strong></p><div class="captioned-button-wrap" data-attrs="{&quot;url&quot;:&quot;https://techleadsclub.substack.com/p/newsletter-82?utm_source=substack&utm_medium=email&utm_content=share&action=share&quot;,&quot;text&quot;:&quot;Compartilhar&quot;}" data-component-name="CaptionedButtonToDOM"><div class="preamble"><p class="cta-caption">Est&#225; gostando da newsletter? Deixe um like e compartilhe com seus amigos e colegas &#128588;</p></div><p class="button-wrapper" data-attrs="{&quot;url&quot;:&quot;https://techleadsclub.substack.com/p/newsletter-82?utm_source=substack&utm_medium=email&utm_content=share&action=share&quot;,&quot;text&quot;:&quot;Compartilhar&quot;}" data-component-name="ButtonCreateButton"><a class="button primary" href="/__u/techleadsclub.substack.com/p/newsletter-82?utm_source=substack&amp;utm_medium=email&amp;utm_content=share&amp;action=share"><span>Compartilhar</span></a></p></div>]]></content:encoded></item><item><title><![CDATA[🗞️ Newsletter #81]]></title><description><![CDATA[Fazendo nada no trabalho, Mercado de trabalho em engenharia 2026, Loop Engineering, Arquitetura do PlayStation, Investimento em IA como decis&#227;o de capital e mais]]></description><link>https://techleadsclub.substack.com/p/newsletter-81</link><guid isPermaLink="false">https://techleadsclub.substack.com/p/newsletter-81</guid><dc:creator><![CDATA[William Calderipe]]></dc:creator><pubDate>Fri, 12 Jun 2026 16:46:03 GMT</pubDate><enclosure url="https://substackcdn.com/image/fetch/$s_!Z9-W!,w_256,c_limit,f_auto,q_auto:good,fl_progressive:steep/https%3A%2F%2Fsubstack-post-media.s3.amazonaws.com%2Fpublic%2Fimages%2F134844ec-ca47-4df0-ab39-8ead3a5bf341_256x256.png" length="0" type="image/jpeg"/><content:encoded><![CDATA[<h2>&#129321; Favoritos</h2><p><strong><a href="https://www.seangoedecke.com/doing-nothing-at-work/?utm_source=techleadsclub&amp;utm_medium=newsletter&amp;utm_term=81">Doing nothing at work</a></strong></p><p>Funcion&#225;rios podem permanecer produtivos fazendo menos tarefas quando o ambiente de trabalho oferece autonomia e tempo para reflex&#227;o estrat&#233;gica.</p><p><strong><a href="https://newsletter.pragmaticengineer.com/p/the-job-market-in-2026-part-2?utm_source=techleadsclub&amp;utm_medium=newsletter&amp;utm_term=81">State of the software engineering job market in 2026, part 2</a></strong></p><p>O mercado de trabalho em engenharia de software permanece dif&#237;cil em 2024, mas empresas est&#227;o voltando a contratar desenvolvedores seniores ap&#243;s demiss&#245;es em massa dos &#250;ltimos dois anos.</p><p><strong><a href="/__u/addyo.substack.com/p/loop-engineering?utm_source=techleadsclub&amp;utm_medium=newsletter&amp;utm_term=81">Loop Engineering</a></strong></p><p>Addy Osmani apresenta loop engineering como a evolu&#231;&#227;o do prompt engineering, onde desenvolvedores criam sistemas automatizados com cinco componentes principais - automa&#231;&#245;es, worktrees, skills, plugins e sub-agentes - que gerenciam agentes de c&#243;digo de forma aut&#244;noma, mas alerta que verifica&#231;&#227;o e compreens&#227;o do c&#243;digo permanecem responsabilidades humanas essenciais.</p><p><strong><a href="https://www.copetti.org/writings/consoles/playstation/?utm_source=techleadsclub&amp;utm_medium=newsletter&amp;utm_term=81">PlayStation Architecture</a></strong></p><p>O PlayStation original usava processador MIPS R3000A de 32-bit a 33 MHz com chips dedicados para gr&#225;ficos 2D/3D e &#225;udio, revolucionando jogos dom&#233;sticos com renderiza&#231;&#227;o 3D em tempo real.</p><p><strong><a href="/__u/alklaser.substack.com/p/o-iconoclasta-otimista-edicao-31?utm_source=techleadsclub&amp;utm_medium=newsletter&amp;utm_term=81">A decis&#227;o que n&#227;o pode ser delegada: por que investimento em IA &#233; aloca&#231;&#227;o de capital, n&#227;o decis&#227;o de TI</a></strong></p><p>Conselhos tratam investimentos em IA como decis&#245;es t&#233;cnicas deleg&#225;veis quando s&#227;o na verdade escolhas irrevers&#237;veis de aloca&#231;&#227;o de capital que definem o posicionamento competitivo da empresa.</p><p><strong><a href="https://www.codingwithjesse.com/blog/rockstar-developers/?utm_source=techleadsclub&amp;utm_medium=newsletter&amp;utm_term=81">Cleaning up after AI rockstar developers</a></strong></p><p>Desenvolvedores &#8220;rockstar&#8221; que usam IA para produzir c&#243;digo rapidamente criam d&#233;bito t&#233;cnico que outros precisam corrigir posteriormente.</p><p><strong><a href="https://blog.bytebytego.com/p/token-spend-out-of-control-the-case?utm_source=techleadsclub&amp;utm_medium=newsletter&amp;utm_term=81">Token Spend Out of Control? The Case for Smarter Routing</a></strong></p><p>Agentes de IA consomem milh&#245;es de tokens por tarefa atrav&#233;s de loops repetitivos, tornando o roteamento inteligente de requisi&#231;&#245;es para modelos mais baratos essencial para controlar custos sem comprometer qualidade.</p><h2>&#128279; Outros</h2><p><strong><a href="https://newsletter.pragmaticengineer.com/p/the-pulse-a-trend-of-trying-to-cut-328?utm_source=techleadsclub&amp;utm_medium=newsletter&amp;utm_term=81">The Pulse: a trend of trying to cut back on AI spend within eng departments?</a></strong></p><p><strong><a href="https://github.blog/changelog/2026-06-09-upcoming-breaking-changes-for-npm-v12/?utm_source=techleadsclub&amp;utm_medium=newsletter&amp;utm_term=81">Upcoming breaking changes for npm v12</a></strong></p><p><strong><a href="https://newsletter.systemdesigncodex.com/p/key-components-of-a-prod-web-application?utm_source=techleadsclub&amp;utm_medium=newsletter&amp;utm_term=81">Key Components of a Prod Web Application</a></strong></p><p><strong><a href="https://github.com/apple/container/blob/main/docs/container-machine.md?utm_source=techleadsclub&amp;utm_medium=newsletter&amp;utm_term=81">Apple container machine</a></strong></p><p><strong><a href="https://earendil-works.github.io/absurd/?utm_source=techleadsclub&amp;utm_medium=newsletter&amp;utm_term=81">Absurd is a Postgres-native durable workflow system</a></strong></p><p><strong><a href="https://pgdog.dev/?utm_source=techleadsclub&amp;utm_medium=newsletter&amp;utm_term=81">PgDog - Horizontal scaling for PostgreSQL</a></strong></p><p><strong><a href="https://blog.janestreet.com/i-design-with-claude-code-more-than-figma-now-index/?utm_source=techleadsclub&amp;utm_medium=newsletter&amp;utm_term=81">I design with Claude more than Figma now</a></strong></p><p><strong><a href="https://arxiv.org/html/2602.24281v1?utm_source=techleadsclub&amp;utm_medium=newsletter&amp;utm_term=81">Memory Caching: RNNs with Growing Memory</a></strong></p><p><strong><a href="https://blog.bytebytego.com/p/what-salesforce-learned-from-20000?utm_source=techleadsclub&amp;utm_medium=newsletter&amp;utm_term=81">What Salesforce Learned from 20,000 Enterprise Agent Deployments</a></strong></p><p><strong><a href="https://github.com/tastyeffectco/sandboxd?utm_source=techleadsclub&amp;utm_medium=newsletter&amp;utm_term=81">tastyeffectco/sandboxd: Self-hosted dev sandboxes with preview URLs. One command. No Kubernetes, perfect for coding agents and Saas factories</a></strong></p><p><strong><a href="https://arstechnica.com/tech-policy/2026/06/sp-500-blocks-fast-spacex-entry-wont-waive-rule-for-unprofitable-ai-firms/?utm_source=techleadsclub&amp;utm_medium=newsletter&amp;utm_term=81">S&amp;P 500 rejects SpaceX, also blocking entry for OpenAI and Anthropic</a></strong></p><div class="captioned-button-wrap" data-attrs="{&quot;url&quot;:&quot;https://techleadsclub.substack.com/p/newsletter-81?utm_source=substack&utm_medium=email&utm_content=share&action=share&quot;,&quot;text&quot;:&quot;Compartilhar&quot;}" data-component-name="CaptionedButtonToDOM"><div class="preamble"><p class="cta-caption">Est&#225; gostando da newsletter? Deixe um like e compartilhe com seus amigos e colegas &#128588;</p></div><p class="button-wrapper" data-attrs="{&quot;url&quot;:&quot;https://techleadsclub.substack.com/p/newsletter-81?utm_source=substack&utm_medium=email&utm_content=share&action=share&quot;,&quot;text&quot;:&quot;Compartilhar&quot;}" data-component-name="ButtonCreateButton"><a class="button primary" href="/__u/techleadsclub.substack.com/p/newsletter-81?utm_source=substack&amp;utm_medium=email&amp;utm_content=share&amp;action=share"><span>Compartilhar</span></a></p></div>]]></content:encoded></item><item><title><![CDATA[🗞️ Newsletter #80]]></title><description><![CDATA[Anti-IA e nostalgia fascista, Maybe Later era feature no iOS, 8 mitos sobre IA na engenharia, Fazer a tarefa mais dif&#237;cil primeiro, Guia para engenheiro IA-nativo e mais]]></description><link>https://techleadsclub.substack.com/p/newsletter-80</link><guid isPermaLink="false">https://techleadsclub.substack.com/p/newsletter-80</guid><dc:creator><![CDATA[William Calderipe]]></dc:creator><pubDate>Fri, 05 Jun 2026 20:40:28 GMT</pubDate><enclosure url="https://substackcdn.com/image/fetch/$s_!Z9-W!,w_256,c_limit,f_auto,q_auto:good,fl_progressive:steep/https%3A%2F%2Fsubstack-post-media.s3.amazonaws.com%2Fpublic%2Fimages%2F134844ec-ca47-4df0-ab39-8ead3a5bf341_256x256.png" length="0" type="image/jpeg"/><content:encoded><![CDATA[<h2>&#129321; Favoritos</h2><p><strong><a href="https://seangoedecke.com/anti-ai-nostalgia/?utm_source=techleadsclub&amp;utm_medium=newsletter&amp;utm_term=80">Anti-AI nostalgia and the cult of the past</a></strong></p><p>O autor argumenta que ret&#243;ricas anti-IA frequentemente espelham estruturas fascistas ao romantizar programadores do passado, rejeitar modernidade tecnol&#243;gica e promover nostalgia por uma elite tradicional amea&#231;ada.</p><p><strong><a href="https://arnorhs.dev/posts/2026-06-04/maybe-later-was-a-feature/?utm_source=techleadsclub&amp;utm_medium=newsletter&amp;utm_term=80">&#8220;Maybe later&#8221; was a feature</a></strong></p><p>Desenvolvedores do iOS 6 implementaram &#8220;Maybe Later&#8221; como recurso intencional para reduzir press&#227;o sobre usu&#225;rios que rejeitavam atualiza&#231;&#245;es do sistema.</p><p><strong><a href="https://newsletter.getdx.com/p/8-myths-on-software-engineering-and?utm_source=techleadsclub&amp;utm_medium=newsletter&amp;utm_term=80">8 myths on software engineering and AI</a></strong></p><p>Brian Houck identifica oito mitos sobre IA na engenharia de software, mostrando que desenvolvedores passam apenas 14% do tempo codificando e que o impacto da IA depende mais do sistema organizacional do que da capacidade individual.</p><p><strong><a href="https://justinjackson.ca/hard-thing?utm_source=techleadsclub&amp;utm_medium=newsletter&amp;utm_term=80">Do the Hardest Thing</a></strong></p><p>Justin Jackson argumenta que empres&#225;rios devem enfrentar as tarefas mais dif&#237;ceis primeiro, como validar ideias com clientes reais em vez de procrastinar com atividades t&#233;cnicas mais confort&#225;veis.</p><p><strong><a href="https://blog.bytebytego.com/p/a-practical-guide-to-becoming-an?utm_source=techleadsclub&amp;utm_medium=newsletter&amp;utm_term=80">A Practical Guide to Becoming an AI-Native Engineer</a></strong></p><p>ByteByteGo apresenta guia pr&#225;tico para engenheiros se tornarem produtivos com ferramentas de IA nativas.</p><p><strong><a href="https://nolanlawson.com/2026/05/25/using-ai-to-write-better-code-more-slowly/?utm_source=techleadsclub&amp;utm_medium=newsletter&amp;utm_term=80">Using AI to write better code more slowly</a></strong></p><p>O autor usa IA para escrever c&#243;digo de maior qualidade, priorizando corre&#231;&#227;o e legibilidade sobre velocidade de desenvolvimento.</p><h2>&#128279; Outros</h2><p><strong><a href="https://newsletter.nagringa.dev/p/fighting-the-fake-morte-as-vagas?utm_source=techleadsclub&amp;utm_medium=newsletter&amp;utm_term=80">Fighting the fake: morte &#224;s vagas fantasma</a></strong></p><p><strong><a href="https://shopify.engineering/scaling-inventory-reservations?utm_source=techleadsclub&amp;utm_medium=newsletter&amp;utm_term=80">A Shopify trocou o Redis pelo MySQL nas reservas de estoque - e a li&#231;&#227;o foi: simplificar.</a></strong></p><p><strong><a href="https://fabioluiz.dev/journal/br/2026-06-02-ai-era-software-engineering?utm_source=techleadsclub&amp;utm_medium=newsletter&amp;utm_term=80">Como IA e Desenvolvimento Ag&#234;ntico est&#227;o transformando a Engenharia de Software</a></strong></p><p><strong><a href="https://newsletter.systemdesigncodex.com/p/how-to-design-apis?utm_source=techleadsclub&amp;utm_medium=newsletter&amp;utm_term=80">How to Design APIs</a></strong></p><p><strong><a href="https://newsletter.pragmaticengineer.com/p/kubernetes-and-retiring-at-the-top?utm_source=techleadsclub&amp;utm_medium=newsletter&amp;utm_term=80">Kubernetes and retiring at the top with Kelsey Hightower</a></strong></p><p><strong><a href="https://sumnerevans.com/posts/software-engineering/stop-using-conventional-commits/?utm_source=techleadsclub&amp;utm_medium=newsletter&amp;utm_term=80">Conventional Commits encourages focus on the wrong things</a></strong></p><p><strong><a href="https://github.com/tmuxinator/tmuxinator?utm_source=techleadsclub&amp;utm_medium=newsletter&amp;utm_term=80">tmuxinator/tmuxinator: Manage complex tmux sessions easily</a></strong></p><p><strong><a href="https://pewdiepie-archdaemon.github.io/odysseus/?utm_source=techleadsclub&amp;utm_medium=newsletter&amp;utm_term=80">Odysseus &#8212; A Self-Hosted AI Workspace</a></strong></p><p><strong><a href="https://github.com/microsoft/pg_durable?utm_source=techleadsclub&amp;utm_medium=newsletter&amp;utm_term=80">pg_durable: Microsoft open sources in-database durable execution</a></strong></p><p><strong><a href="https://www.theregister.com/public-sector/2026/06/04/govuk-goes-dutch-on-payments-as-it-dumps-stripe/5250763?utm_source=techleadsclub&amp;utm_medium=newsletter&amp;utm_term=80">Gov.uk has replaced Stripe with Dutch provider Adyen</a></strong></p><p><strong><a href="https://www.githubstatus.com/incidents/2nmfnbknhlnv?utm_source=techleadsclub&amp;utm_medium=newsletter&amp;utm_term=80">Accidentally deleted subscriptions for chat integrations (Slack and MS Teams)</a></strong></p><div class="captioned-button-wrap" data-attrs="{&quot;url&quot;:&quot;https://techleadsclub.substack.com/p/newsletter-80?utm_source=substack&utm_medium=email&utm_content=share&action=share&quot;,&quot;text&quot;:&quot;Compartilhar&quot;}" data-component-name="CaptionedButtonToDOM"><div class="preamble"><p class="cta-caption">Est&#225; gostando da newsletter? Deixe um like e compartilhe com seus amigos e colegas &#128588;</p></div><p class="button-wrapper" data-attrs="{&quot;url&quot;:&quot;https://techleadsclub.substack.com/p/newsletter-80?utm_source=substack&utm_medium=email&utm_content=share&action=share&quot;,&quot;text&quot;:&quot;Compartilhar&quot;}" data-component-name="ButtonCreateButton"><a class="button primary" href="/__u/techleadsclub.substack.com/p/newsletter-80?utm_source=substack&amp;utm_medium=email&amp;utm_content=share&amp;action=share"><span>Compartilhar</span></a></p></div>]]></content:encoded></item><item><title><![CDATA[🗞️ Newsletter #79]]></title><description><![CDATA[71% das empresas n&#227;o veem retorno com IA, Plateau de efici&#234;ncia da IA, Testes como sensor de regress&#227;o, Product-market fit da OpenAI/Anthropic e mais]]></description><link>https://techleadsclub.substack.com/p/newsletter-79</link><guid isPermaLink="false">https://techleadsclub.substack.com/p/newsletter-79</guid><dc:creator><![CDATA[William Calderipe]]></dc:creator><pubDate>Fri, 29 May 2026 17:39:12 GMT</pubDate><enclosure url="https://substackcdn.com/image/youtube/w_728,c_limit/Zn3_CyLctsI" length="0" type="image/jpeg"/><content:encoded><![CDATA[<h2>&#128204; Destaques</h2><div id="youtube2-Zn3_CyLctsI" class="youtube-wrap" data-attrs="{&quot;videoId&quot;:&quot;Zn3_CyLctsI&quot;,&quot;startTime&quot;:null,&quot;endTime&quot;:null}" data-component-name="Youtube2ToDOM"><div class="youtube-inner"><iframe src="https://www.youtube-nocookie.com/embed/Zn3_CyLctsI?rel=0&amp;autoplay=0&amp;showinfo=0&amp;enablejsapi=0" frameborder="0" loading="lazy" gesture="media" allow="autoplay; fullscreen" allowautoplay="true" allowfullscreen="true" width="728" height="409"></iframe></div></div><p>Estudo revela que 71% das empresas n&#227;o obt&#234;m retorno financeiro com investimentos em IA devido a custos operacionais crescentes e falta de captura de valor real.</p><h2>&#129321; Favoritos</h2><p><strong><a href="https://newsletter.getdx.com/p/the-ai-efficiency-plateau?utm_source=techleadsclub&amp;utm_medium=newsletter&amp;utm_term=79">The AI efficiency plateau</a></strong></p><p>Desenvolvedores atingem picos de economia de tempo com IA rapidamente mas dois ter&#231;os perdem esses ganhos nos trimestres seguintes devido a limita&#231;&#245;es sist&#234;micas e redistribui&#231;&#227;o de tarefas.</p><p><strong><a href="https://martinfowler.com/articles/sensors-for-coding-agents.html?utm_source=techleadsclub&amp;utm_medium=newsletter&amp;utm_term=79#TheTestSuiteAsARegressionSensor">The test suite as a regression sensor</a></strong></p><p>Birgitta B&#246;ckeler examina o papel dos testes de muta&#231;&#227;o como sensor de regress&#227;o para agentes de codifica&#231;&#227;o por IA.</p><p><strong><a href="https://simonwillison.net/2026/May/27/product-market-fit/?utm_source=techleadsclub&amp;utm_medium=newsletter&amp;utm_term=79">I think Anthropic and OpenAI have found product-market fit</a></strong></p><p>OpenAI e Anthropic alcan&#231;aram product-market fit com seus modelos de linguagem, evidenciado pelo crescimento explosivo de usu&#225;rios e receita.</p><p><strong><a href="https://newsletter.pragmaticengineer.com/p/opencode?utm_source=techleadsclub&amp;utm_medium=newsletter&amp;utm_term=79">Building OpenCode with Dax Raad</a></strong></p><p>Dax Raad explica como o OpenCode cresceu de 650 mil para 8 milh&#245;es de usu&#225;rios mensais focando no posicionamento open source enquanto questiona se IA realmente torna desenvolvimento de software mais eficiente.</p><p><strong><a href="/__u/alklaser.substack.com/p/brain-fry-a-barganha-de-fausto-dos-nossos-tempos?utm_source=techleadsclub&amp;utm_medium=newsletter&amp;utm_term=79">A barganha de Fausto dos nossos tempos</a></strong></p><p>Alexandre Klaser relata como o uso intensivo de IA aumentou sua produtividade mas causou &#8220;brain fry&#8221; - fadiga mental por supervisionar excessivamente agentes de IA, levando a burnout e perda de qualidade no trabalho.</p><p><strong><a href="https://nolanlawson.com/2026/05/25/using-ai-to-write-better-code-more-slowly/?utm_source=techleadsclub&amp;utm_medium=newsletter&amp;utm_term=79">Using AI to write better code more slowly</a></strong></p><p>Nolan Lawson prop&#245;e usar IA para escrever c&#243;digo de maior qualidade em ritmo mais lento, priorizando an&#225;lise e refinamento sobre velocidade de produ&#231;&#227;o.</p><h2>&#128279; Outros</h2><p><strong><a href="https://noslopgrenade.com/?utm_source=techleadsclub&amp;utm_medium=newsletter&amp;utm_term=79">no slop grenade</a></strong></p><p><strong><a href="https://dropbox.tech/culture/beyond-code-generation-rethinking-engineering-productivity-in-the-age-of-ai-agents?utm_source=techleadsclub&amp;utm_medium=newsletter&amp;utm_term=79">Beyond code generation: rethinking engineering productivity in the age of AI agents</a></strong></p><p><strong><a href="https://www.anthropic.com/news/claude-opus-4-8?utm_source=techleadsclub&amp;utm_medium=newsletter&amp;utm_term=79">Introducing Claude Opus 4.8</a></strong></p><p><strong><a href="https://www.conductor.build/?utm_source=techleadsclub&amp;utm_medium=newsletter&amp;utm_term=79">Conductor - Run a team of coding agents on your Mac</a></strong></p><p><strong><a href="https://dev.to/shinyakato_/5-postgresql-locking-behaviors-that-trip-people-up-4k7n?utm_source=techleadsclub&amp;utm_medium=newsletter&amp;utm_term=79">5 PostgreSQL locking behaviors that trip people up</a></strong></p><p><strong><a href="https://deveficiente.com/blog/entidades-finas-e-composicao-o-design-que-escolhi-para-a-nova-plataforma-7ne?hotfeature=53&amp;utm_source=techleadsclub&amp;utm_medium=newsletter&amp;utm_term=79">Entidades finas e composi&#231;&#227;o: o design que escolhi para a nova plataforma | Dev + Eficiente</a></strong></p><p><strong><a href="https://github.com/NikolayS/pgque?utm_source=techleadsclub&amp;utm_medium=newsletter&amp;utm_term=79">NikolayS/PgQue: PgQue &#8211; Zero-bloat Postgres queue built on top of on battle-proven Skype&#8217;s PgQ. One SQL file to install, pg_cron to tick.</a></strong></p><div class="captioned-button-wrap" data-attrs="{&quot;url&quot;:&quot;https://techleadsclub.substack.com/p/newsletter-79?utm_source=substack&utm_medium=email&utm_content=share&action=share&quot;,&quot;text&quot;:&quot;Compartilhar&quot;}" data-component-name="CaptionedButtonToDOM"><div class="preamble"><p class="cta-caption">Est&#225; gostando da newsletter? Deixe um like e compartilhe com seus amigos e colegas &#128588;</p></div><p class="button-wrapper" data-attrs="{&quot;url&quot;:&quot;https://techleadsclub.substack.com/p/newsletter-79?utm_source=substack&utm_medium=email&utm_content=share&action=share&quot;,&quot;text&quot;:&quot;Compartilhar&quot;}" data-component-name="ButtonCreateButton"><a class="button primary" href="/__u/techleadsclub.substack.com/p/newsletter-79?utm_source=substack&amp;utm_medium=email&amp;utm_content=share&amp;action=share"><span>Compartilhar</span></a></p></div>]]></content:encoded></item><item><title><![CDATA[🗞️ Newsletter #78]]></title><description><![CDATA[Impacto da IA em engenheiros 2026, Debate sobre produtividade com IA, IA local como padr&#227;o, Commodity vs diferencia&#231;&#227;o, Sensores para agentes e mais]]></description><link>https://techleadsclub.substack.com/p/newsletter-78</link><guid isPermaLink="false">https://techleadsclub.substack.com/p/newsletter-78</guid><dc:creator><![CDATA[William Calderipe]]></dc:creator><pubDate>Fri, 22 May 2026 21:45:53 GMT</pubDate><enclosure url="https://substackcdn.com/image/fetch/$s_!Z9-W!,w_256,c_limit,f_auto,q_auto:good,fl_progressive:steep/https%3A%2F%2Fsubstack-post-media.s3.amazonaws.com%2Fpublic%2Fimages%2F134844ec-ca47-4df0-ab39-8ead3a5bf341_256x256.png" length="0" type="image/jpeg"/><content:encoded><![CDATA[<h2>&#129321; Favoritos</h2><p><strong><a href="https://newsletter.pragmaticengineer.com/p/ai-impact-on-software-engineers-part-2?utm_source=techleadsclub&amp;utm_medium=newsletter&amp;utm_term=78">AI&#8217;s impact on software engineers in 2026: key trends, Part 2</a></strong></p><p>Pesquisa com 900 engenheiros de software revela que IA reduz trabalho repetitivo mas gera expectativas irreais de neg&#243;cio, degrada qualidade do c&#243;digo enquanto gest&#227;o ignora o problema, e engenheiros juniores gastam mais tokens enquanto recebem menos oportunidades de crescimento.</p><p><strong><a href="https://newsletter.getdx.com/p/ai-productivity-debate?utm_source=techleadsclub&amp;utm_medium=newsletter&amp;utm_term=78">AI productivity debate</a></strong></p><p>L&#237;deres de engenharia debatem que IA n&#227;o reduzir&#225; n&#250;mero de desenvolvedores mas mudar&#225; o mix de tarefas, com principais obst&#225;culos sendo problemas culturais e de gest&#227;o em vez de limita&#231;&#245;es t&#233;cnicas.</p><p><strong><a href="https://app.techleads.club/posts/local-ai-needs-to-be-norm/?utm_source=techleadsclub&amp;utm_medium=newsletter&amp;utm_term=78">Local AI Needs to be the Norm</a></strong></p><p>IA local precisa se tornar o padr&#227;o para proteger privacidade e reduzir depend&#234;ncia de servi&#231;os em nuvem.</p><p><strong><a href="/__u/alklaser.substack.com/p/o-iconoclasta-otimista-edicao-28?utm_source=techleadsclub&amp;utm_medium=newsletter&amp;utm_term=78">Virar commodity ou apostar na diferencia&#231;&#227;o. De que lado voc&#234; est&#225;?</a></strong></p><p>O AI Index 2026 da Stanford mostra que capacidade t&#233;cnica em tributa&#231;&#227;o, cr&#233;dito imobili&#225;rio, finan&#231;as corporativas e racioc&#237;nio jur&#237;dico virou commodity, com profissionais precisando focar no conhecimento do neg&#243;cio para se diferenciar em vez de competir apenas na execu&#231;&#227;o t&#233;cnica.</p><p><strong><a href="https://martinfowler.com/articles/sensors-for-coding-agents.html?utm_source=techleadsclub&amp;utm_medium=newsletter&amp;utm_term=78">Maintainability sensors for coding agents</a></strong></p><p>Birgitta B&#246;ckeler publica experi&#234;ncias com sensores de an&#225;lise est&#225;tica para manter c&#243;digos gerados por agentes de IA organizados e sustent&#225;veis.</p><p><strong><a href="https://seangoedecke.com/prompts-are-technical-debt-too/?utm_source=techleadsclub&amp;utm_medium=newsletter&amp;utm_term=78">Prompts are technical debt too</a></strong></p><p>Prompts s&#227;o d&#237;vida t&#233;cnica pior que c&#243;digo porque se tornam obsoletos silenciosamente a cada nova vers&#227;o de modelo, exigindo reconfigura&#231;&#227;o constante.</p><p><strong><a href="https://blog.isquaredsoftware.com/2026/05/ai-thoughts-part-2-agent-workflow-tools/?utm_source=techleadsclub&amp;utm_medium=newsletter&amp;utm_term=78">My Thoughts on AI, Part 2: Agent Setup, Workflow, and Tools</a></strong></p><p>Mark Erikson configura agentes de IA com Claude Engineer para automa&#231;&#227;o de tarefas, usa Cursor para codifica&#231;&#227;o assistida e Apply Digital para refatora&#231;&#227;o de c&#243;digo.</p><h2>&#128279; Outros</h2><p><strong><a href="https://spf13.com/p/the-maintainers-dilemma/?utm_source=techleadsclub&amp;utm_medium=newsletter&amp;utm_term=78">The Maintainer&#8217;s Dilemma</a></strong></p><p><strong><a href="https://blog.k10s.dev/im-going-back-to-writing-code-by-hand/?utm_source=techleadsclub&amp;utm_medium=newsletter&amp;utm_term=78">Im going back to writing code by hand</a></strong></p><p><strong><a href="https://martinfowler.com/bliki/VibeCoding.html?utm_source=techleadsclub&amp;utm_medium=newsletter&amp;utm_term=78">Bliki: Vibe Coding</a></strong></p><p><strong><a href="https://safedep.io/mini-shai-hulud-strikes-again-314-npm-packages-compromised?utm_source=techleadsclub&amp;utm_medium=newsletter&amp;utm_term=78">Mini Shai-Hulud Strikes Again: 317 npm Packages Compromised</a></strong></p><p><strong><a href="https://www.jeffgeerling.com/blog/2026/bambu-lab-abusing-open-source-social-contract/?utm_source=techleadsclub&amp;utm_medium=newsletter&amp;utm_term=78">Bambu Lab is abusing the open source social contract</a></strong></p><p><strong><a href="https://news.ycombinator.com/item?id=48060054&amp;utm_source=techleadsclub&amp;utm_medium=newsletter&amp;utm_term=78">Ask HN: We just had an actual UUID v4 collision...</a></strong></p><p><strong><a href="https://dropbox.tech/machine-learning/introducing-nova-our-internal-platform-for-coding-agents?utm_source=techleadsclub&amp;utm_medium=newsletter&amp;utm_term=78">Introducing Nova, our internal platform for coding agents</a></strong></p><div class="captioned-button-wrap" data-attrs="{&quot;url&quot;:&quot;https://techleadsclub.substack.com/p/newsletter-78?utm_source=substack&utm_medium=email&utm_content=share&action=share&quot;,&quot;text&quot;:&quot;Compartilhar&quot;}" data-component-name="CaptionedButtonToDOM"><div class="preamble"><p class="cta-caption">Est&#225; gostando da newsletter? Deixe um like e compartilhe com seus amigos e colegas &#128588;</p></div><p class="button-wrapper" data-attrs="{&quot;url&quot;:&quot;https://techleadsclub.substack.com/p/newsletter-78?utm_source=substack&utm_medium=email&utm_content=share&action=share&quot;,&quot;text&quot;:&quot;Compartilhar&quot;}" data-component-name="ButtonCreateButton"><a class="button primary" href="/__u/techleadsclub.substack.com/p/newsletter-78?utm_source=substack&amp;utm_medium=email&amp;utm_content=share&amp;action=share"><span>Compartilhar</span></a></p></div>]]></content:encoded></item><item><title><![CDATA[🗞️ Newsletter #77]]></title><description><![CDATA[Perfil de devs que querem em 2026, Stakeholders antes do S&#234;nior, Long-running Agents, AI-native developer e mais]]></description><link>https://techleadsclub.substack.com/p/newsletter-77</link><guid isPermaLink="false">https://techleadsclub.substack.com/p/newsletter-77</guid><dc:creator><![CDATA[William Calderipe]]></dc:creator><pubDate>Fri, 15 May 2026 21:18:33 GMT</pubDate><enclosure url="https://substackcdn.com/image/youtube/w_728,c_limit/iLyo0J8PRIA" length="0" type="image/jpeg"/><content:encoded><![CDATA[<h2>&#128204; Destaques</h2><div id="youtube2-iLyo0J8PRIA" class="youtube-wrap" data-attrs="{&quot;videoId&quot;:&quot;iLyo0J8PRIA&quot;,&quot;startTime&quot;:null,&quot;endTime&quot;:null}" data-component-name="Youtube2ToDOM"><div class="youtube-inner"><iframe src="https://www.youtube-nocookie.com/embed/iLyo0J8PRIA?rel=0&amp;autoplay=0&amp;showinfo=0&amp;enablejsapi=0" frameborder="0" loading="lazy" gesture="media" allow="autoplay; fullscreen" allowautoplay="true" allowfullscreen="true" width="728" height="409"></iframe></div></div><p>Empresas do Vale do Sil&#237;cio buscam desenvolvedores com mentalidade de produto e habilidades de engenharia de plataforma para 2026, n&#227;o especialistas em IA ou machine learning.</p><h2>&#129321; Favoritos</h2><p><strong><a href="https://www.youtube.com/watch?v=aCcqc3hkBJ0&amp;utm_source=techleadsclub&amp;utm_medium=newsletter&amp;utm_term=77">O que Ningu&#233;m Te Ensina sobre Stakeholders Antes do S&#234;nior</a></strong></p><p>Felipe Adamoli explica como desenvolvedores s&#234;nior devem mapear stakeholders usando matriz de interesse e influ&#234;ncia para navegar no jogo pol&#237;tico empresarial e garantir alinhamento nas entregas.</p><p><strong><a href="/__u/addyo.substack.com/p/long-running-agents?utm_source=techleadsclub&amp;utm_medium=newsletter&amp;utm_term=77">Long-running Agents</a></strong></p><p>Addy Osmani defende que agentes de IA de longa dura&#231;&#227;o podem trabalhar por horas, dias ou semanas atrav&#233;s de m&#250;ltiplas janelas de contexto e sandboxes, usando persist&#234;ncia de estado e separa&#231;&#227;o arquitetural entre &#8220;c&#233;rebro&#8221;, &#8220;m&#227;os&#8221; e &#8220;sess&#227;o&#8221; para superar limita&#231;&#245;es de contexto finito e falta de verifica&#231;&#227;o autom&#225;tica.</p><p><strong><a href="https://newsletter.getdx.com/p/the-ai-native-developer?utm_source=techleadsclub&amp;utm_medium=newsletter&amp;utm_term=77">The AI-native developer</a></strong></p><p>Pesquisa com 1.300 desenvolvedores identifica quatro est&#225;gios de flu&#234;ncia em IA (c&#233;tico, explorador, colaborador, estrategista) e tr&#234;s cen&#225;rios futuros para a profiss&#227;o, desde amplifica&#231;&#227;o humana at&#233; codifica&#231;&#227;o puramente clerical.</p><p><strong><a href="/__u/alklaser.substack.com/p/o-iconoclasta-otimista-edicao-27?utm_source=techleadsclub&amp;utm_medium=newsletter&amp;utm_term=77">O colapso da engenharia: por que tiny teams podem virar o novo default</a></strong></p><p>Alexandre Klaser documenta como Peter Steinberger transformou um projeto de fim de semana em oferta bilion&#225;ria da OpenAI investindo US$ 20 mil mensais em tokens de IA, enquanto a ind&#250;stria enfrenta 81 mil demiss&#245;es em tr&#234;s meses por equipes menores renderem mais que estruturas tradicionais.</p><p><strong><a href="https://seangoedecke.com/space-ai-datacenters-do-not-have-a-cooling-problem/?utm_source=techleadsclub&amp;utm_medium=newsletter&amp;utm_term=77">AI datacenters in space do not have a cooling problem</a></strong></p><p>Datacenters de IA espaciais podem dissipar calor atrav&#233;s de radia&#231;&#227;o t&#233;rmica em radiadores sombreados, mas exigiriam 250 mil metros quadrados de &#225;rea de radia&#231;&#227;o para um datacenter de 100MW.</p><p><strong><a href="https://antfly.io/blog/distributed-search-engine-go?utm_source=techleadsclub&amp;utm_medium=newsletter&amp;utm_term=77">Building a Distributed Search Engine in Pure Go</a></strong></p><p>Antfly construiu um mecanismo de busca distribu&#237;do usando apenas Go puro, sem frameworks externos ou bibliotecas de terceiros.</p><h2>&#128279; Outros</h2><p><strong><a href="https://newsletter.getdx.com/p/designing-the-ai-native-engineering?utm_source=techleadsclub&amp;utm_medium=newsletter&amp;utm_term=77">Designing the AI-native engineering organization</a></strong></p><p><strong><a href="http://trapiche.cloud/?utm_source=techleadsclub&amp;utm_medium=newsletter&amp;utm_term=77">Trapiche: uma alternativa brasileira &#224; Vercel</a></strong></p><p><strong><a href="https://hawksley.org/2026/05/06/adopting-herb-at-github.html?utm_source=techleadsclub&amp;utm_medium=newsletter&amp;utm_term=77">Adopting Herb at GitHub - Joel Hawksley</a></strong></p><p><strong><a href="https://stripe.com/blog/giving-agents-the-ability-to-pay?utm_source=techleadsclub&amp;utm_medium=newsletter&amp;utm_term=77">Giving agents the ability to pay</a></strong></p><p><strong><a href="https://newsletter.systemdesignclassroom.com/p/bad-retries-can-break-good-systems?utm_source=techleadsclub&amp;utm_medium=newsletter&amp;utm_term=77">Bad Retries Can Break Good Systems</a></strong></p><p><strong><a href="https://newsletter.systemdesigncodex.com/p/how-terraform-works?utm_source=techleadsclub&amp;utm_medium=newsletter&amp;utm_term=77">How Terraform Works</a></strong></p><p><strong><a href="https://www.youtube.com/watch?v=55pTFVoclvE&amp;list=WL&amp;index=1&amp;t=300s&amp;utm_source=techleadsclub&amp;utm_medium=newsletter&amp;utm_term=77">I was laid off by Atlassian (system design)</a></strong></p><p><strong><a href="https://activeagents.ai/?utm_source=techleadsclub&amp;utm_medium=newsletter&amp;utm_term=77">The AI Framework For Ruby on Rails</a></strong></p><p><strong><a href="https://x.com/mitchellh/status/2055380239711457578?utm_source=techleadsclub&amp;utm_medium=newsletter&amp;utm_term=77">I strongly believe there are entire companies right now under heavy AI psychosis - Mitchell Hashimoto (@mitchellh) on X</a></strong></p><p><strong><a href="https://tanstack.com/blog/npm-supply-chain-compromise-postmortem?utm_source=techleadsclub&amp;utm_medium=newsletter&amp;utm_term=77">Postmortem: TanStack npm supply-chain compromise</a></strong></p><div class="captioned-button-wrap" data-attrs="{&quot;url&quot;:&quot;https://techleadsclub.substack.com/p/newsletter-77?utm_source=substack&utm_medium=email&utm_content=share&action=share&quot;,&quot;text&quot;:&quot;Compartilhar&quot;}" data-component-name="CaptionedButtonToDOM"><div class="preamble"><p class="cta-caption">Est&#225; gostando da newsletter? Deixe um like e compartilhe com seus amigos e colegas &#128588;</p></div><p class="button-wrapper" data-attrs="{&quot;url&quot;:&quot;https://techleadsclub.substack.com/p/newsletter-77?utm_source=substack&utm_medium=email&utm_content=share&action=share&quot;,&quot;text&quot;:&quot;Compartilhar&quot;}" data-component-name="ButtonCreateButton"><a class="button primary" href="/__u/techleadsclub.substack.com/p/newsletter-77?utm_source=substack&amp;utm_medium=email&amp;utm_content=share&amp;action=share"><span>Compartilhar</span></a></p></div>]]></content:encoded></item><item><title><![CDATA[🗞️ Newsletter #76]]></title><description><![CDATA[Spec-Driven Development para 2026, Por que Devs entram em burnout, Ilus&#227;o da transforma&#231;&#227;o com IA, Dropbox reduz monorepo de 87GB para 20GB e mais]]></description><link>https://techleadsclub.substack.com/p/newsletter-76</link><guid isPermaLink="false">https://techleadsclub.substack.com/p/newsletter-76</guid><dc:creator><![CDATA[William Calderipe]]></dc:creator><pubDate>Sat, 04 Apr 2026 10:44:53 GMT</pubDate><enclosure url="https://substackcdn.com/image/youtube/w_728,c_limit/YFDp-smGYqQ" length="0" type="image/jpeg"/><content:encoded><![CDATA[<h2>&#128204; Destaques</h2><div id="youtube2-YFDp-smGYqQ" class="youtube-wrap" data-attrs="{&quot;videoId&quot;:&quot;YFDp-smGYqQ&quot;,&quot;startTime&quot;:null,&quot;endTime&quot;:null}" data-component-name="Youtube2ToDOM"><div class="youtube-inner"><iframe src="https://www.youtube-nocookie.com/embed/YFDp-smGYqQ?rel=0&amp;autoplay=0&amp;showinfo=0&amp;enablejsapi=0" frameborder="0" loading="lazy" gesture="media" allow="autoplay; fullscreen" allowautoplay="true" allowfullscreen="true" width="728" height="409"></iframe></div></div><p>Waldemar Neto apresenta Spec-Driven Development com quatro fases (Specify &#8594; Design &#8594; Tasks &#8594; Execute) para otimizar desenvolvimento com IA atrav&#233;s de contexto estruturado, paraleliza&#231;&#227;o de tarefas e mem&#243;ria persistente entre sess&#245;es.</p><h2>&#129321; Favoritos</h2><p><strong><a href="https://www.youtube.com/watch?v=o1FCtBS28Mk&amp;utm_source=techleadsclub&amp;utm_medium=newsletter&amp;utm_term=76">Por que Devs Entram em BURNOUT</a></strong></p><p>A cultura do her&#243;i e dedica&#231;&#227;o excessiva levam desenvolvedores talentosos ao burnout, mas documenta&#231;&#227;o e delega&#231;&#227;o criam rotinas sustent&#225;veis de alto impacto.</p><p><strong><a href="https://martinfowler.com/articles/harness-engineering.html?utm_source=techleadsclub&amp;utm_medium=newsletter&amp;utm_term=76">Harness engineering for coding agent users</a></strong></p><p>Birgitta B&#246;ckeler desenvolve modelo mental para engenharia de harness que permite usar agentes de c&#243;digo de forma mais eficaz.</p><p><strong><a href="/__u/alklaser.substack.com/p/o-iconoclasta-otimista-21?utm_source=techleadsclub&amp;utm_medium=newsletter&amp;utm_term=76">A ilus&#227;o da transforma&#231;&#227;o com IA: sinais que insistimos em ignorar</a></strong></p><p>Estudo da McKinsey com mais de 10 mil executivos mostra que 88% das organiza&#231;&#245;es experimentam IA, mas 81% n&#227;o reportam ganhos mensur&#225;veis, revelando que a maioria confunde acesso a ferramentas com transforma&#231;&#227;o efetiva ao n&#227;o redesenhar processos de trabalho.</p><p><strong><a href="https://dropbox.tech/infrastructure/reducing-our-monorepo-size-to-improve-developer-velocity?utm_source=techleadsclub&amp;utm_medium=newsletter&amp;utm_term=76">Reducing our monorepo size to improve developer velocity</a></strong></p><p>Dropbox reduziu seu monorepo de 87GB para 20GB atrav&#233;s de reconfigura&#231;&#227;o da compress&#227;o delta do Git, cortando o tempo de clone de mais de uma hora para menos de 15 minutos.</p><p><strong><a href="https://newsletter.getdx.com/p/ai-generated-merged-code-holds-steady?utm_source=techleadsclub&amp;utm_medium=newsletter&amp;utm_term=76">AI-generated merged code holds steady at ~30%</a></strong></p><p>DX Research mostra que c&#243;digo gerado por IA permanece est&#225;vel em cerca de 30% do c&#243;digo total mergeado, com usu&#225;rios di&#225;rios registrando maior aumento de 24,1% para 30,8% entre trimestres.</p><p><strong><a href="https://seangoedecke.com/simple-work-gets-rewarded/?utm_source=techleadsclub&amp;utm_medium=newsletter&amp;utm_term=76">Engineers do get promoted for writing simple code</a></strong></p><p>Engenheiros que escrevem c&#243;digo simples entregam mais projetos e s&#227;o promovidos com mais frequ&#234;ncia do que aqueles que criam solu&#231;&#245;es complexas desnecessariamente.</p><p><strong><a href="https://ccunpacked.dev/?utm_source=techleadsclub&amp;utm_medium=newsletter&amp;utm_term=76">Claude Code Unpacked</a></strong></p><p>Claude Code Unpacked oferece explica&#231;&#245;es detalhadas de c&#243;digos Python gerados pelo Claude AI para desenvolvedores aprenderem suas t&#233;cnicas de programa&#231;&#227;o.</p><p><strong><a href="https://kevinboone.me/web-adjacent.html?utm_source=techleadsclub&amp;utm_medium=newsletter&amp;utm_term=76">Kevin Boone: Small web, IndieWeb, Gemini&#8230; A guide to the retro-web</a></strong></p><p>Kevin Boone apresenta alternativas &#224; web moderna como Small Web, IndieWeb e protocolo Gemini para criar experi&#234;ncias online mais simples e focadas no conte&#250;do.</p><p><strong><a href="https://newsletter.pragmaticengineer.com/p/scaling-uber-with-thuan-pham-ubers?utm_source=techleadsclub&amp;utm_medium=newsletter&amp;utm_term=76">Scaling Uber with Thuan Pham (Uber&#8217;s first CTO)</a></strong></p><p>Thuan Pham, primeiro CTO do Uber, compartilha como escalou a empresa de 40 engenheiros para milhares atrav&#233;s de tr&#234;s fases: estabiliza&#231;&#227;o do sistema, transi&#231;&#227;o do mon&#243;lito para microservi&#231;os e crescimento global da organiza&#231;&#227;o de engenharia.</p><p><strong><a href="https://simonwillison.net/2026/Mar/29/pretext/?utm_source=techleadsclub&amp;utm_medium=newsletter&amp;utm_term=76">Pretext</a></strong></p><h2>&#128279; Outros</h2><p><strong><a href="https://www.humanlayer.dev/blog/skill-issue-harness-engineering-for-coding-agents?utm_source=techleadsclub&amp;utm_medium=newsletter&amp;utm_term=76">Skill Issue: Harness Engineering for Coding Agents</a></strong></p><p><strong><a href="https://www.stepsecurity.io/blog/axios-compromised-on-npm-malicious-versions-drop-remote-access-trojan?utm_source=techleadsclub&amp;utm_medium=newsletter&amp;utm_term=76">axios Compromised on npm - Malicious Versions Drop Remote Access Trojan - StepSecurity</a></strong></p><p><strong><a href="https://newsletter.nagringa.dev/p/o-problema-que-nenhuma-assinatura-de-ia-resolve?utm_source=techleadsclub&amp;utm_medium=newsletter&amp;utm_term=76">O problema que nenhuma assinatura de IA resolve</a></strong></p><p><strong><a href="https://wasp.sh/blog/2026/03/25/gentle-intro-npm-workspaces?utm_source=techleadsclub&amp;utm_medium=newsletter&amp;utm_term=76">A gentle intro to npm workspaces, with visuals | Wasp</a></strong></p><p><strong><a href="https://www.winterjung.dev/en/golang-pkgs-for-production-server/?utm_source=techleadsclub&amp;utm_medium=newsletter&amp;utm_term=76">Go Package Recommendations for Production Server Development</a></strong></p><p><strong><a href="https://thoughtbot.com/blog/meet-duck-typer-your-new-duck-typing-friend?utm_source=techleadsclub&amp;utm_medium=newsletter&amp;utm_term=76">Meet Duck Typer: your new duck typing friend</a></strong></p><p><strong><a href="https://newsletter.systemdesigncodex.com/p/how-tcp-handshake-works?utm_source=techleadsclub&amp;utm_medium=newsletter&amp;utm_term=76">How TCP Handshake Works</a></strong></p><p><strong><a href="https://newsletter.systemdesignclassroom.com/p/async-systems-scale-your-system-and-your-problems?utm_source=techleadsclub&amp;utm_medium=newsletter&amp;utm_term=76">Async systems scale your system&#8230; and your problems.</a></strong></p><p><strong><a href="https://www.depesz.com/2026/03/22/waiting-for-postgresql-19-add-pg_plan_advice-contrib-module/?utm_source=techleadsclub&amp;utm_medium=newsletter&amp;utm_term=76">Waiting for PostgreSQL 19 &#8211; Add pg_plan_advice contrib module. &#8211; select * from depesz;</a></strong></p><p><strong><a href="https://newsletter.getdx.com/p/measuring-ai-impact-assessing-readiness?utm_source=techleadsclub&amp;utm_medium=newsletter&amp;utm_term=76">Measuring AI impact, assessing readiness, and new data trends</a></strong></p><p><strong><a href="https://martinfowler.com/articles/reduce-friction-ai/encoding-team-standards.html?utm_source=techleadsclub&amp;utm_medium=newsletter&amp;utm_term=76">Encoding Team Standards</a></strong></p><p><strong><a href="https://www.depesz.com/2026/03/19/waiting-for-postgresql-19-introduce-the-repack-command/?utm_source=techleadsclub&amp;utm_medium=newsletter&amp;utm_term=76">Waiting for PostgreSQL 19 &#8211; Introduce the REPACK command &#8211; select * from depesz;</a></strong></p><p><strong><a href="https://seangoedecke.com/programming-with-ai-agents-as-theory-building/?utm_source=techleadsclub&amp;utm_medium=newsletter&amp;utm_term=76">Programming (with AI agents) as theory building</a></strong></p><p><strong><a href="https://refactoring.fm/p/every-engineer-is-a-manager-now-with?utm_source=techleadsclub&amp;utm_medium=newsletter&amp;utm_term=76">Every Engineer Is a Manager Now &#129302; &#8212; with Chris Lattner</a></strong></p><p><strong><a href="https://refactoring.fm/p/leadership-archetypes-perfect-teams?utm_source=techleadsclub&amp;utm_medium=newsletter&amp;utm_term=76">Leadership archetypes, perfect teams, and weekly readings &#128161;</a></strong></p><p><strong><a href="https://planetscale.com/blog/high-memory-usage-in-postgres-is-good-actually?utm_source=techleadsclub&amp;utm_medium=newsletter&amp;utm_term=76">High memory usage in Postgres is good, actually &#8212; PlanetScale</a></strong></p><p><strong><a href="https://willybrauner.com/journal/signal-the-push-pull-based-algorithm?utm_source=techleadsclub&amp;utm_medium=newsletter&amp;utm_term=76">Signals, the push-pull based algorithm &#8212; Willy Brauner</a></strong></p><p><strong><a href="https://github.com/chenglou/pretext?utm_source=techleadsclub&amp;utm_medium=newsletter&amp;utm_term=76">GitHub - chenglou/pretext</a></strong></p><div class="captioned-button-wrap" data-attrs="{&quot;url&quot;:&quot;https://techleadsclub.substack.com/p/newsletter-76?utm_source=substack&utm_medium=email&utm_content=share&action=share&quot;,&quot;text&quot;:&quot;Compartilhar&quot;}" data-component-name="CaptionedButtonToDOM"><div class="preamble"><p class="cta-caption">Est&#225; gostando da newsletter? Deixe um like e compartilhe com seus amigos e colegas &#128588;</p></div><p class="button-wrapper" data-attrs="{&quot;url&quot;:&quot;https://techleadsclub.substack.com/p/newsletter-76?utm_source=substack&utm_medium=email&utm_content=share&action=share&quot;,&quot;text&quot;:&quot;Compartilhar&quot;}" data-component-name="ButtonCreateButton"><a class="button primary" href="/__u/techleadsclub.substack.com/p/newsletter-76?utm_source=substack&amp;utm_medium=email&amp;utm_content=share&amp;action=share"><span>Compartilhar</span></a></p></div>]]></content:encoded></item><item><title><![CDATA[🗞️ Newsletter #75]]></title><description><![CDATA[5 skills de IA para Dev S&#234;nior, IA matou o &#193;gil?, TigerBeetle trilh&#227;o transa&#231;&#245;es, Agentes IA desacelerando desenvolvimento, Soberania digital e mais]]></description><link>https://techleadsclub.substack.com/p/newsletter-75</link><guid isPermaLink="false">https://techleadsclub.substack.com/p/newsletter-75</guid><dc:creator><![CDATA[William Calderipe]]></dc:creator><pubDate>Sat, 21 Mar 2026 01:23:34 GMT</pubDate><enclosure url="https://substackcdn.com/image/youtube/w_728,c_limit/CnVhA16UszU" length="0" type="image/jpeg"/><content:encoded><![CDATA[<h2>&#128204; Destaques</h2><div id="youtube2-CnVhA16UszU" class="youtube-wrap" data-attrs="{&quot;videoId&quot;:&quot;CnVhA16UszU&quot;,&quot;startTime&quot;:null,&quot;endTime&quot;:null}" data-component-name="Youtube2ToDOM"><div class="youtube-inner"><iframe src="https://www.youtube-nocookie.com/embed/CnVhA16UszU?rel=0&amp;autoplay=0&amp;showinfo=0&amp;enablejsapi=0" frameborder="0" loading="lazy" gesture="media" allow="autoplay; fullscreen" allowautoplay="true" allowfullscreen="true" width="728" height="409"></iframe></div></div><p>Waldemar Neto apresenta cinco habilidades gratuitas de IA para desenvolvedores: cria&#231;&#227;o de documentos de design, resolu&#231;&#227;o de coment&#225;rios do GitHub, an&#225;lise de acoplamento, an&#225;lise de dom&#237;nio e especifica&#231;&#227;o orientada por testes.</p><h2>&#129321; Favoritos</h2><p><strong><a href="https://www.youtube.com/watch?v=TMYKWeqIDJs&amp;utm_source=techleadsclub&amp;utm_medium=newsletter&amp;utm_term=75">A IA Matou o &#193;gil? (Minha opini&#227;o sincera)</a></strong></p><p>Felipe Adamoli defende que a IA torna o Scrum obsoleto e prop&#245;e Kanban e Extreme Programming como metodologias mais eficientes para desenvolvimento assistido por intelig&#234;ncia artificial.</p><p><strong><a href="https://tigerbeetle.com/blog/2026-03-19-a-trillion-transactions?utm_source=techleadsclub&amp;utm_medium=newsletter&amp;utm_term=75">A Trillion Transactions</a></strong></p><p>TigerBeetle processou um trilh&#227;o de transa&#231;&#245;es para testar sua capacidade de escala.</p><p><strong><a href="https://newsletter.pragmaticengineer.com/p/are-ai-agents-actually-slowing-us?utm_source=techleadsclub&amp;utm_medium=newsletter&amp;utm_term=75">Are AI agents actually slowing us down?</a></strong></p><p>Gergely Orosz relata casos de empresas onde agentes de IA causam bugs em produ&#231;&#227;o, degradam qualidade de software e aumentam tempo de limpeza de c&#243;digo, questionando se essas ferramentas realmente aceleram desenvolvimento.</p><p><strong><a href="https://newsletter.getdx.com/p/why-arent-ai-productivity-gains-higher?utm_source=techleadsclub&amp;utm_medium=newsletter&amp;utm_term=75">Why aren&#8217;t AI productivity gains higher?</a></strong></p><p>Desenvolvedores relatam que ganhos de produtividade da IA s&#227;o limitados porque codifica&#231;&#227;o representa apenas 16% do tempo de trabalho, enquanto gargalos em revis&#227;o de c&#243;digo, falta de contexto organizacional e atrito social impedem maiores benef&#237;cios.</p><p><strong><a href="/__u/alklaser.substack.com/p/o-iconoclasta-otimista-edicao-19?utm_source=techleadsclub&amp;utm_medium=newsletter&amp;utm_term=75">Soberania n&#227;o &#233; opcional: come&#231;a a era da geopatriation</a></strong></p><p>Alexandre Klaser analisa como o primeiro ataque militar confirmado a data centers da AWS no Golfo em mar&#231;o de 2026 transformou a geopatriation (movimento de repatria&#231;&#227;o de dados para ambientes soberanos) de tend&#234;ncia de cinco anos em imperativo de seis meses.</p><p><strong><a href="https://stripe.com/blog/adaptive-pricing-for-subscriptions?utm_source=techleadsclub&amp;utm_medium=newsletter&amp;utm_term=75">Testing the impact of Adaptive Pricing across 1.5M subscription checkout sessions</a></strong></p><p>Stripe lan&#231;ou Adaptive Pricing para assinaturas que aumentou convers&#245;es em 4,7% e LTV em 5,4% em teste com 1,5 milh&#227;o de checkouts.</p><p><strong><a href="https://www.cs.unc.edu/~stotts/COMP590-059-f24/robsrules.html?utm_source=techleadsclub&amp;utm_medium=newsletter&amp;utm_term=75">Rob Pike&#8217;s 5 Rules of Programming</a></strong></p><p>As cinco regras de programa&#231;&#227;o de Rob Pike (autor da Golang).</p><h2>&#128279; Outros</h2><p><strong><a href="https://seangoedecke.com/big-tech-needs-big-egos/?utm_source=techleadsclub&amp;utm_medium=newsletter&amp;utm_term=75">Big tech engineers need big egos</a></strong></p><p><strong><a href="https://newsletter.pragmaticengineer.com/p/building-whatsapp-with-jean-lee?utm_source=techleadsclub&amp;utm_medium=newsletter&amp;utm_term=75">Building WhatsApp with Jean Lee</a></strong></p><p><strong><a href="/__u/addyo.substack.com/p/death-of-the-ide?utm_source=techleadsclub&amp;utm_medium=newsletter&amp;utm_term=75">Death of the IDE?</a></strong></p><p><strong><a href="https://www.fintechbrainfood.com/p/the-intention-layer?utm_source=techleadsclub&amp;utm_medium=newsletter&amp;utm_term=75">The Intention Layer</a></strong></p><p><strong><a href="https://www.winterjung.dev/en/golang-pkgs-for-production-server/?utm_source=techleadsclub&amp;utm_medium=newsletter&amp;utm_term=75">Go Package Recommendations for Production Server Development</a></strong></p><p><strong><a href="https://xata.io/blog/postgres-data-warehouse?utm_source=techleadsclub&amp;utm_medium=newsletter&amp;utm_term=75">Postgres as a Data Warehouse: No OLAP Stack Required by No&#233;mi V&#225;nyi</a></strong></p><p><strong><a href="https://martinfowler.com/articles/reduce-friction-ai/context-anchoring.html?utm_source=techleadsclub&amp;utm_medium=newsletter&amp;utm_term=75">Context Anchoring</a></strong></p><p><strong><a href="https://github.com/calesthio/Crucix?utm_source=techleadsclub&amp;utm_medium=newsletter&amp;utm_term=75">calesthio/Crucix: your personal intelligence agent</a></strong></p><p><strong><a href="https://github.com/marcus/nightshift?utm_source=techleadsclub&amp;utm_medium=newsletter&amp;utm_term=75">marcus/nightshift: uses your leftover Claude / Codex budget to surprise you with useful PRs</a></strong></p><p><strong><a href="https://github.com/obra/superpowers?utm_source=techleadsclub&amp;utm_medium=newsletter&amp;utm_term=75">obra/superpowers: an agentic skills framework &amp; software development methodology that works</a></strong></p><p><strong><a href="https://github.com/msitarzewski/agency-agents?utm_source=techleadsclub&amp;utm_medium=newsletter&amp;utm_term=75">msitarzewski/agency-agents: a complete AI agency at your fingertips</a></strong></p><p><strong><a href="https://github.com/nextlevelbuilder/ui-ux-pro-max-skill?utm_source=techleadsclub&amp;utm_medium=newsletter&amp;utm_term=75">nextlevelbuilder/ui-ux-pro-max-skill: an AI skill that provide design intelligence for building professional UI/UX</a></strong></p><p><strong><a href="https://github.com/solid-process/rails-way-app?utm_source=techleadsclub&amp;utm_medium=newsletter&amp;utm_term=75">solid-process/rails-way-app</a></strong></p><div class="captioned-button-wrap" data-attrs="{&quot;url&quot;:&quot;https://techleadsclub.substack.com/p/newsletter-75?utm_source=substack&utm_medium=email&utm_content=share&action=share&quot;,&quot;text&quot;:&quot;Compartilhar&quot;}" data-component-name="CaptionedButtonToDOM"><div class="preamble"><p class="cta-caption">Est&#225; gostando da newsletter? Deixe um like e compartilhe com seus amigos e colegas &#128588;</p></div><p class="button-wrapper" data-attrs="{&quot;url&quot;:&quot;https://techleadsclub.substack.com/p/newsletter-75?utm_source=substack&utm_medium=email&utm_content=share&action=share&quot;,&quot;text&quot;:&quot;Compartilhar&quot;}" data-component-name="ButtonCreateButton"><a class="button primary" href="/__u/techleadsclub.substack.com/p/newsletter-75?utm_source=substack&amp;utm_medium=email&amp;utm_content=share&amp;action=share"><span>Compartilhar</span></a></p></div>]]></content:encoded></item><item><title><![CDATA[🗞️ Newsletter #74]]></title><description><![CDATA[Mentoria para acelerar carreira dev, IA da Uber gera 65-72% do c&#243;digo, Agentes aut&#244;nomos reduzem 40% tempo de cria&#231;&#227;o, TypeScript 6.0 RC e mais]]></description><link>https://techleadsclub.substack.com/p/newsletter-74</link><guid isPermaLink="false">https://techleadsclub.substack.com/p/newsletter-74</guid><dc:creator><![CDATA[William Calderipe]]></dc:creator><pubDate>Fri, 13 Mar 2026 21:47:47 GMT</pubDate><enclosure url="https://substackcdn.com/image/youtube/w_728,c_limit/-Hxkt43qwKU" length="0" type="image/jpeg"/><content:encoded><![CDATA[<h2>&#128204; Destaques</h2><div id="youtube2--Hxkt43qwKU" class="youtube-wrap" data-attrs="{&quot;videoId&quot;:&quot;-Hxkt43qwKU&quot;,&quot;startTime&quot;:null,&quot;endTime&quot;:null}" data-component-name="Youtube2ToDOM"><div class="youtube-inner"><iframe src="https://www.youtube-nocookie.com/embed/-Hxkt43qwKU?rel=0&amp;autoplay=0&amp;showinfo=0&amp;enablejsapi=0" frameborder="0" loading="lazy" gesture="media" allow="autoplay; fullscreen" allowautoplay="true" allowfullscreen="true" width="728" height="409"></iframe></div></div><p>Felipe Adamoli explica como mentorar desenvolvedores atrav&#233;s de mentoria t&#233;cnica, planos de desenvolvimento individual e feature leading para escalar impacto e acelerar crescimento na carreira.</p><h2>&#129321; Favoritos</h2><p><strong><a href="/__u/alklaser.substack.com/p/o-iconoclasta-otimista-edicao-18?utm_source=techleadsclub&amp;utm_medium=newsletter&amp;utm_term=74">Por que o futuro da intelig&#234;ncia n&#227;o se parece com uma f&#225;brica</a></strong></p><p>Klaser argumenta que a corrida por modelos de IA cada vez maiores atingiu seu limite econ&#244;mico, com hyperscalers gastando 94% do cash flow.</p><p><strong><a href="https://newsletter.pragmaticengineer.com/p/how-uber-uses-ai-for-development?utm_source=techleadsclub&amp;utm_medium=newsletter&amp;utm_term=74">How Uber uses AI for development: inside look</a></strong></p><p>Uber criou plataforma interna de agentes de IA que geram 65-72% do c&#243;digo em IDEs, com 92% dos desenvolvedores usando agentes mensalmente e 11% dos pull requests abertos por agentes.</p><p><strong><a href="https://thoughtworks.medium.com/beyond-the-hype-a-real-world-guide-to-building-enterprise-grade-ai-agents-59f8f9a6970c?source=rss-8075bdd73dd9------2&amp;utm_source=techleadsclub&amp;utm_medium=newsletter&amp;utm_term=74">Beyond the hype: A real-world guide to building enterprise-grade AI agents</a></strong></p><p>A equipe da Thoughtworks transformou um chatbot RAG em um agente aut&#244;nomo que reduz em 40% o tempo de cria&#231;&#227;o de regras de pol&#237;ticas.</p><p><strong><a href="https://martinfowler.com/articles/exploring-gen-ai/humans-and-agents.html?utm_source=techleadsclub&amp;utm_medium=newsletter&amp;utm_term=74">Humans and Agents in Software Engineering Loops</a></strong></p><p>Kief Morris defende que desenvolvedores devem construir e gerenciar loops de trabalho com agentes de IA em vez de microgerenci&#225;-los ou deix&#225;-los totalmente aut&#244;nomos.</p><p><strong><a href="https://seangoedecke.com/giving-llms-a-personality/?utm_source=techleadsclub&amp;utm_medium=newsletter&amp;utm_term=74">Giving LLMs a personality is just good engineering</a></strong></p><p>Modelos de IA recebem personalidades humanas porque isso &#233; necess&#225;rio para torn&#225;-los &#250;teis, n&#227;o por estrat&#233;gia de marketing.</p><p><strong><a href="https://mistral.ai/news/rails-testing-on-autopilot-building-an-agent-that-writes-what-developers-wont?utm_source=techleadsclub&amp;utm_medium=newsletter&amp;utm_term=74">Rails Testing on Autopilot: Building an Agent That Writes What Developers Won&#8217;t</a></strong></p><p>Mistral AI desenvolveu um agente que escreve automaticamente testes para aplica&#231;&#245;es Rails, automatizando uma tarefa frequentemente negligenciada por desenvolvedores.</p><h2>&#128279; Outros</h2><p><strong><a href="https://newsletter.systemdesignclassroom.com/p/a-single-subscriber-doesnt-turn-pubsub-into-a-queue?utm_source=techleadsclub&amp;utm_medium=newsletter&amp;utm_term=74">A Single Subscriber Doesn&#8217;t Turn Pub/Sub Into a Queue</a></strong></p><p><strong><a href="https://newsletter.getdx.com/p/ai-productivity-gains-are-10-not?utm_source=techleadsclub&amp;utm_medium=newsletter&amp;utm_term=74">AI productivity gains are 10%, not 10x</a></strong></p><p><strong><a href="https://thoughtworks.medium.com/claude-code-and-cobol-modernization-whats-the-reality-2e6022b5022a?source=rss-8075bdd73dd9------2&amp;utm_source=techleadsclub&amp;utm_medium=newsletter&amp;utm_term=74">Claude Code and COBOL modernization: What&#8217;s the reality?</a></strong></p><p><strong><a href="https://newsletter.pragmaticengineer.com/p/from-ides-to-ai-agents-with-steve?utm_source=techleadsclub&amp;utm_medium=newsletter&amp;utm_term=74">From IDEs to AI Agents with Steve Yegge</a></strong></p><p><strong><a href="https://seangoedecke.com/will-my-job-still-exist/?utm_source=techleadsclub&amp;utm_medium=newsletter&amp;utm_term=74">I don&#8217;t know if my job will still exist in ten years</a></strong></p><p><strong><a href="https://www.unsw.edu.au/newsroom/news/2026/03/New-negative-light-technology-hides-data-transfers-in-plain-sight?utm_source=techleadsclub&amp;utm_medium=newsletter&amp;utm_term=74">New &#8216;negative light&#8217; technology hides data transfers in plain sight</a></strong></p><p><strong><a href="https://devblogs.microsoft.com/typescript/announcing-typescript-6-0-rc/?utm_source=techleadsclub&amp;utm_medium=newsletter&amp;utm_term=74">Announcing TypeScript 6.0 RC</a></strong></p><p><strong><a href="https://news.ycombinator.com/item?id=47368874&amp;utm_source=techleadsclub&amp;utm_medium=newsletter&amp;utm_term=74">How do you capture WHY engineering decisions were made, not just what?</a></strong></p><div class="captioned-button-wrap" data-attrs="{&quot;url&quot;:&quot;https://techleadsclub.substack.com/p/newsletter-74?utm_source=substack&utm_medium=email&utm_content=share&action=share&quot;,&quot;text&quot;:&quot;Compartilhar&quot;}" data-component-name="CaptionedButtonToDOM"><div class="preamble"><p class="cta-caption">Est&#225; gostando da newsletter? Deixe um like e compartilhe com seus amigos e colegas &#128588;</p></div><p class="button-wrapper" data-attrs="{&quot;url&quot;:&quot;https://techleadsclub.substack.com/p/newsletter-74?utm_source=substack&utm_medium=email&utm_content=share&action=share&quot;,&quot;text&quot;:&quot;Compartilhar&quot;}" data-component-name="ButtonCreateButton"><a class="button primary" href="/__u/techleadsclub.substack.com/p/newsletter-74?utm_source=substack&amp;utm_medium=email&amp;utm_content=share&amp;action=share"><span>Compartilhar</span></a></p></div>]]></content:encoded></item><item><title><![CDATA[🗞️ Newsletter #73]]></title><description><![CDATA[Desenvolvimento de software no Brasil, Refatora&#231;&#227;o com IA e subagentes, Arquitetura AI-native multiagente, System Design em entrevistas e mais]]></description><link>https://techleadsclub.substack.com/p/newsletter-73</link><guid isPermaLink="false">https://techleadsclub.substack.com/p/newsletter-73</guid><dc:creator><![CDATA[William Calderipe]]></dc:creator><pubDate>Sun, 01 Mar 2026 13:06:22 GMT</pubDate><enclosure url="https://substackcdn.com/image/youtube/w_728,c_limit/U-GBY00QQxU" length="0" type="image/jpeg"/><content:encoded><![CDATA[<h2>&#128204; Destaques</h2><div id="youtube2-U-GBY00QQxU" class="youtube-wrap" data-attrs="{&quot;videoId&quot;:&quot;U-GBY00QQxU&quot;,&quot;startTime&quot;:null,&quot;endTime&quot;:null}" data-component-name="Youtube2ToDOM"><div class="youtube-inner"><iframe src="https://www.youtube-nocookie.com/embed/U-GBY00QQxU?rel=0&amp;autoplay=0&amp;showinfo=0&amp;enablejsapi=0" frameborder="0" loading="lazy" gesture="media" allow="autoplay; fullscreen" allowautoplay="true" allowfullscreen="true" width="728" height="409"></iframe></div></div><p>Felipe Adamoli explica que o desenvolvimento de software no Brasil enfrenta desafios &#250;nicos devido &#224; baixa maturidade digital das empresas e diferen&#231;as culturais em rela&#231;&#227;o aos mercados internacionais.</p><h2>&#129321; Favoritos</h2><p><strong><a href="https://www.youtube.com/watch?v=KROGqmSUeTw&amp;utm_source=techleadsclub&amp;utm_medium=newsletter&amp;utm_term=73">Refatora&#231;&#227;o com IA + Skills, Subagentes e Times de Agentes</a></strong></p><p>Waldemar Neto ensina m&#233;todo de refatora&#231;&#227;o com IA que usa subagentes paralelos e skills reutiliz&#225;veis para modernizar sistemas legados inteiros em vez de arquivo por arquivo.</p><p><strong><a href="/__u/alklaser.substack.com/p/o-iconoclasta-otimista-edicao-16?utm_source=techleadsclub&amp;utm_medium=newsletter&amp;utm_term=73">A ascens&#227;o da arquitetura AI-native: de LLMs monol&#237;ticos a sistemas multiagente</a></strong></p><p>A edi&#231;&#227;o #16 do &#8220;O Iconoclasta Otimista&#8221; analisa a transi&#231;&#227;o da IA de modelos monol&#237;ticos para sistemas multiagente com protocolos abertos, destacando que, apesar de avan&#231;os como o Agentforce da Salesforce e a Harvey AI (avaliada em US$ 8 bilh&#245;es), o Gartner projeta que 40% dos projetos ag&#234;nticos ser&#227;o cancelados at&#233; 2027 - n&#227;o por falha tecnol&#243;gica, mas por governan&#231;a fr&#225;gil, dados inconsistentes e processos mal desenhados.</p><p><strong><a href="https://newsletter.nagringa.dev/p/system-design-nao-e-sobre-a-resposta-certa?utm_source=techleadsclub&amp;utm_medium=newsletter&amp;utm_term=73">System Design n&#227;o &#233; sobre a Resposta Certa</a></strong></p><p>Lucas Faria demonstra como entrevistas de System Design avaliam colabora&#231;&#227;o e racioc&#237;nio estruturado, n&#227;o conhecimento t&#233;cnico puro, atrav&#233;s de dois candidatos reais onde quem passou usou abordagem mais simples mas comunicou melhor suas decis&#245;es.</p><p><strong><a href="https://martinfowler.com/articles/reduce-friction-ai/knowledge-priming.html?utm_source=techleadsclub&amp;utm_medium=newsletter&amp;utm_term=73">Knowledge Priming</a></strong></p><p>Rahul Garg identifica que &#8220;primar&#8221; LLMs com conhecimento da base de c&#243;digo e padr&#245;es preferidos reduz a necessidade de corre&#231;&#245;es no c&#243;digo gerado por IA.</p><p><strong><a href="https://blog.cloudflare.com/vinext/?utm_source=techleadsclub&amp;utm_medium=newsletter&amp;utm_term=73">How we rebuilt Next.js with AI in one week</a></strong></p><p>Cloudflare reconstruiu uma aplica&#231;&#227;o Next.js completa usando apenas IA em sete dias, demonstrando capacidades pr&#225;ticas de desenvolvimento automatizado.</p><p><strong><a href="https://newsletter.pragmaticengineer.com/p/mitchell-hashimoto?utm_source=techleadsclub&amp;utm_medium=newsletter&amp;utm_term=73">Mitchell Hashimoto&#8217;s new way of writing code</a></strong></p><p>Mitchell Hashimoto mant&#233;m agentes de IA funcionando constantemente em segundo plano, delegando pesquisas e an&#225;lises enquanto ele programa ou se afasta do computador.</p><p><strong><a href="http://theoryofconstraints.blogspot.com/2007/06/toc-stories-2-blue-light-creating.html?utm_source=techleadsclub&amp;utm_medium=newsletter&amp;utm_term=73">Theory of Constraints: &#8220;Blue Light&#8221; creating capacity for nothing (2007)</a></strong></p><p>Uma empresa descobriu que luzes azuis nos equipamentos eliminaram gargalos de produ&#231;&#227;o ao reduzir o tempo que operadores gastavam procurando m&#225;quinas dispon&#237;veis.</p><h2>&#128279; Outros</h2><p><strong><a href="https://newsletter.getdx.com/p/developer-experience-at-scale-lessons?utm_source=techleadsclub&amp;utm_medium=newsletter&amp;utm_term=73">Developer experience at scale &#8211; lessons from Dropbox</a></strong></p><p><strong><a href="https://planetscale.com/blog/database-transactions?utm_source=techleadsclub&amp;utm_medium=newsletter&amp;utm_term=73">Database Transactions</a></strong></p><p><strong><a href="https://paolino.me/ruby-is-the-best-language-for-ai-apps/?utm_source=techleadsclub&amp;utm_medium=newsletter&amp;utm_term=73">Ruby Is the Best Language for Building AI Apps</a></strong></p><p><strong><a href="https://spectrum.ieee.org/jimi-hendrix-systems-engineer?utm_source=techleadsclub&amp;utm_medium=newsletter&amp;utm_term=73">How Did Hendrix Turn His Guitar Into a Wave Synthesizer?</a></strong></p><p><strong><a href="https://newsletter.systemdesigncodex.com/p/how-to-prevent-the-db-from-becoming?utm_source=techleadsclub&amp;utm_medium=newsletter&amp;utm_term=73">How to Prevent the DB from Becoming a Bottleneck</a></strong></p><p><strong><a href="https://tigerbeetle.com/blog/2026-02-16-index-count-offset-size?utm_source=techleadsclub&amp;utm_medium=newsletter&amp;utm_term=73">Index, Count, Offset, Size</a></strong></p><p><strong><a href="https://github.com/anthropics/knowledge-work-plugins?utm_source=techleadsclub&amp;utm_medium=newsletter&amp;utm_term=73">anthropics/knowledge-work-plugins: Open source repository of plugins primarily intended for knowledge workers to use in Claude Cowork</a></strong></p><p><strong><a href="https://withdiode.com/?utm_source=techleadsclub&amp;utm_medium=newsletter&amp;utm_term=73">Diode &#8212; Build, program, and simulate hardware</a></strong></p><p><strong><a href="https://www.thebignewsletter.com/p/amazon-busted-for-widespread-price?utm_source=techleadsclub&amp;utm_medium=newsletter&amp;utm_term=73">Amazon BUSTED for Widespread Scheme to Inflate Prices Across the Economy</a></strong></p><div class="captioned-button-wrap" data-attrs="{&quot;url&quot;:&quot;https://techleadsclub.substack.com/p/newsletter-73?utm_source=substack&utm_medium=email&utm_content=share&action=share&quot;,&quot;text&quot;:&quot;Compartilhar&quot;}" data-component-name="CaptionedButtonToDOM"><div class="preamble"><p class="cta-caption">Est&#225; gostando da newsletter? Deixe um like e compartilhe com seus amigos e colegas &#128588;</p></div><p class="button-wrapper" data-attrs="{&quot;url&quot;:&quot;https://techleadsclub.substack.com/p/newsletter-73?utm_source=substack&utm_medium=email&utm_content=share&action=share&quot;,&quot;text&quot;:&quot;Compartilhar&quot;}" data-component-name="ButtonCreateButton"><a class="button primary" href="/__u/techleadsclub.substack.com/p/newsletter-73?utm_source=substack&amp;utm_medium=email&amp;utm_content=share&amp;action=share"><span>Compartilhar</span></a></p></div>]]></content:encoded></item><item><title><![CDATA[🗞️ Newsletter #72]]></title><description><![CDATA[Shadow AI como dilema de governan&#231;a, Use apenas Postgres, GitHub Actions prejudicando times, Orquestra&#231;&#227;o de equipes Claude, Moltbook lugar interessante e mais]]></description><link>https://techleadsclub.substack.com/p/newsletter-72</link><guid isPermaLink="false">https://techleadsclub.substack.com/p/newsletter-72</guid><dc:creator><![CDATA[William Calderipe]]></dc:creator><pubDate>Sun, 15 Feb 2026 11:54:15 GMT</pubDate><enclosure url="https://substackcdn.com/image/fetch/$s_!Z9-W!,w_256,c_limit,f_auto,q_auto:good,fl_progressive:steep/https%3A%2F%2Fsubstack-post-media.s3.amazonaws.com%2Fpublic%2Fimages%2F134844ec-ca47-4df0-ab39-8ead3a5bf341_256x256.png" length="0" type="image/jpeg"/><content:encoded><![CDATA[<h2>&#129321; Favoritos</h2><p><strong><a href="/__u/alklaser.substack.com/p/o-iconoclasta-otimista-edicao-14?utm_source=techleadsclub&amp;utm_medium=newsletter&amp;utm_term=72">Shadow AI: o pr&#243;ximo dilema de governan&#231;a</a></strong></p><p>Shadow AI representa uso n&#227;o autorizado de ferramentas de intelig&#234;ncia artificial por funcion&#225;rios, com 59% dos trabalhadores americanos adotando IA sem aprova&#231;&#227;o corporativa e executivos liderando essa pr&#225;tica com 93% de ades&#227;o.</p><p><strong><a href="https://www.tigerdata.com/blog/its-2026-just-use-postgres?utm_source=techleadsclub&amp;utm_medium=newsletter&amp;utm_term=72">It&#8217;s 2026, Just Use Postgres</a></strong></p><p>Postgres atende a maioria dos casos de uso de dados em 2026, eliminando a necessidade de m&#250;ltiplas tecnologias especializadas para startups e empresas m&#233;dias.</p><p><strong><a href="https://iankduncan.com/engineering/2026-02-05-github-actions-killing-your-team/?utm_source=techleadsclub&amp;utm_medium=newsletter&amp;utm_term=72">GitHub Actions Is Slowly Killing Your Engineering Team</a></strong></p><p>GitHub Actions cria depend&#234;ncia excessiva de ferramentas externas e reduz conhecimento t&#233;cnico fundamental das equipes de engenharia.</p><p><strong><a href="https://code.claude.com/docs/en/agent-teams?utm_source=techleadsclub&amp;utm_medium=newsletter&amp;utm_term=72">Orchestrate teams of Claude Code sessions</a></strong></p><p>Claude Code permite criar equipes de m&#250;ltiplos agentes que colaboram automaticamente em projetos de desenvolvimento de software.</p><p><strong><a href="https://simonwillison.net/2026/Jan/30/moltbook/?utm_source=techleadsclub&amp;utm_medium=newsletter&amp;utm_term=72">Moltbook is the most interesting place on the internet right now</a></strong></p><p>Moltbook permite que usu&#225;rios criem e compartilhem livros interativos com c&#243;digo execut&#225;vel diretamente no navegador.</p><p><strong><a href="https://mitchellh.com/writing/my-ai-adoption-journey?utm_source=techleadsclub&amp;utm_medium=newsletter&amp;utm_term=72">My AI Adoption Journey</a></strong></p><p>Mitchell Hashimoto relata que abandonou resist&#234;ncia inicial &#224; IA generativa e agora a utiliza diariamente para acelerar desenvolvimento de software.</p><p><strong><a href="https://martinfowler.com/articles/exploring-gen-ai/context-engineering-coding-agents.html?utm_source=techleadsclub&amp;utm_medium=newsletter&amp;utm_term=72">Context Engineering for Coding Agents</a></strong></p><p>Claude Code lidera inova&#231;&#245;es em engenharia de contexto para agentes de programa&#231;&#227;o, com outros assistentes seguindo rapidamente essa tend&#234;ncia.</p><p><strong><a href="https://newsletter.pragmaticengineer.com/p/the-third-golden-age-of-software?utm_source=techleadsclub&amp;utm_medium=newsletter&amp;utm_term=72">The third golden age of software engineering &#8211; thanks to AI, with Grady Booch</a></strong></p><p>Grady Booch, co-criador da UML, defende que vivemos a terceira era dourada da engenharia de software focada em sistemas complexos, onde a IA representa apenas mais uma eleva&#231;&#227;o de abstra&#231;&#227;o sem eliminar a necessidade de engenheiros.</p><h2>&#128279; Outros</h2><p><strong><a href="https://kerkour.com/turso-sqlite?utm_source=techleadsclub&amp;utm_medium=newsletter&amp;utm_term=72">Deep dive into Turso, the &#8220;SQLite rewrite in Rust&#8221;</a></strong></p><p><strong><a href="https://www.jernesto.com/articles/thinking_hard?utm_source=techleadsclub&amp;utm_medium=newsletter&amp;utm_term=72">I miss thinking hard.</a></strong></p><p><strong><a href="https://seangoedecke.com/screwing-up/?utm_source=techleadsclub&amp;utm_medium=newsletter&amp;utm_term=72">On screwing up</a></strong></p><p><strong><a href="https://seangoedecke.com/heroism/?utm_source=techleadsclub&amp;utm_medium=newsletter&amp;utm_term=72">Large tech companies don&#8217;t need heroes</a></strong></p><p><strong><a href="https://danielabaron.me/blog/speed-up-pg-fts-with-persistent-ts-vectors/?utm_source=techleadsclub&amp;utm_medium=newsletter&amp;utm_term=72">Speeding Up PostgreSQL Full-Text Search with Persistent TSVectors</a></strong></p><p><strong><a href="https://www.seangoedecke.com/fast-llm-inference/?utm_source=techleadsclub&amp;utm_medium=newsletter&amp;utm_term=72">Two different tricks for fast LLM inference</a></strong></p><p><strong><a href="https://hackaday.com/2026/02/02/how-vibe-coding-is-killing-open-source/?utm_source=techleadsclub&amp;utm_medium=newsletter&amp;utm_term=72">How Vibe Coding Is Killing Open Source</a></strong></p><p><strong><a href="https://newsletter.pragmaticengineer.com/p/measuring-ai-dev-tools?utm_source=techleadsclub&amp;utm_medium=newsletter&amp;utm_term=72">Deepdive: How 10 tech companies choose the next generation of dev tools</a></strong></p><p><strong><a href="https://cursor.com/blog/self-driving-codebases?utm_source=techleadsclub&amp;utm_medium=newsletter&amp;utm_term=72">Towards self-driving codebases</a></strong></p><p><strong><a href="https://seangoedecke.com/getting-the-main-thing-right/?utm_source=techleadsclub&amp;utm_medium=newsletter&amp;utm_term=72">Getting the main thing right</a></strong></p><p><strong><a href="https://www.anthropic.com/news/claude-opus-4-6?utm_source=techleadsclub&amp;utm_medium=newsletter&amp;utm_term=72">Claude Opus 4.6</a></strong></p><p><strong><a href="https://news.ycombinator.com/item?id=46826277&amp;utm_source=techleadsclub&amp;utm_medium=newsletter&amp;utm_term=72">Ask HN: Do you also &#8220;hoard&#8221; notes/links but struggle to turn them into actions?</a></strong></p><p><strong><a href="https://github.com/sqldef/sqldef?utm_source=techleadsclub&amp;utm_medium=newsletter&amp;utm_term=72">sqldef/sqldef: Idempotent schema management for MySQL, PostgreSQL, SQLite, and SQL Server</a></strong></p><p><strong><a href="https://github.com/localgpt-app/localgpt?utm_source=techleadsclub&amp;utm_medium=newsletter&amp;utm_term=72">localgpt-app/localgpt</a></strong></p><p><strong><a href="https://github.com/lukilabs/beautiful-mermaid?utm_source=techleadsclub&amp;utm_medium=newsletter&amp;utm_term=72">lukilabs/beautiful-mermaid</a></strong></p><div class="captioned-button-wrap" data-attrs="{&quot;url&quot;:&quot;https://techleadsclub.substack.com/p/newsletter-72?utm_source=substack&utm_medium=email&utm_content=share&action=share&quot;,&quot;text&quot;:&quot;Compartilhar&quot;}" data-component-name="CaptionedButtonToDOM"><div class="preamble"><p class="cta-caption">Est&#225; gostando da newsletter? Deixe um like e compartilhe com seus amigos e colegas &#128588;</p></div><p class="button-wrapper" data-attrs="{&quot;url&quot;:&quot;https://techleadsclub.substack.com/p/newsletter-72?utm_source=substack&utm_medium=email&utm_content=share&action=share&quot;,&quot;text&quot;:&quot;Compartilhar&quot;}" data-component-name="ButtonCreateButton"><a class="button primary" href="/__u/techleadsclub.substack.com/p/newsletter-72?utm_source=substack&amp;utm_medium=email&amp;utm_content=share&amp;action=share"><span>Compartilhar</span></a></p></div>]]></content:encoded></item><item><title><![CDATA[🗞️ Newsletter #71]]></title><description><![CDATA[Product Engineers focam em neg&#243;cio, Automa&#231;&#227;o com IA transforma trabalho, Vagas de $9k/m&#234;s em empresas internacionais, Tech se diversifica p&#243;s-Vale do Sil&#237;cio e mais]]></description><link>https://techleadsclub.substack.com/p/newsletter-71</link><guid isPermaLink="false">https://techleadsclub.substack.com/p/newsletter-71</guid><dc:creator><![CDATA[William Calderipe]]></dc:creator><pubDate>Sun, 01 Feb 2026 14:57:26 GMT</pubDate><enclosure url="https://substackcdn.com/image/youtube/w_728,c_limit/eFfCPQJ-A5A" length="0" type="image/jpeg"/><content:encoded><![CDATA[<h2>&#128204; Destaques</h2><div id="youtube2-eFfCPQJ-A5A" class="youtube-wrap" data-attrs="{&quot;videoId&quot;:&quot;eFfCPQJ-A5A&quot;,&quot;startTime&quot;:null,&quot;endTime&quot;:null}" data-component-name="Youtube2ToDOM"><div class="youtube-inner"><iframe src="https://www.youtube-nocookie.com/embed/eFfCPQJ-A5A?rel=0&amp;autoplay=0&amp;showinfo=0&amp;enablejsapi=0" frameborder="0" loading="lazy" gesture="media" allow="autoplay; fullscreen" allowautoplay="true" allowfullscreen="true" width="728" height="409"></iframe></div></div><p><span class="mention-wrap" data-attrs="{&quot;name&quot;:&quot;Felipe Adamoli&quot;,&quot;id&quot;:10443112,&quot;type&quot;:&quot;user&quot;,&quot;url&quot;:null,&quot;photo_url&quot;:&quot;https://substackcdn.com/image/fetch/f_auto,q_auto:good,fl_progressive:steep/https%3A%2F%2Fsubstack-post-media.s3.amazonaws.com%2Fpublic%2Fimages%2F4f6f090f-3eb5-45ce-81a0-a8578d5b1bef_604x584.png&quot;,&quot;uuid&quot;:&quot;dcfecd44-1049-4366-a3d8-ad84c5f1b0d2&quot;}" data-component-name="MentionToDOM"></span> fala sobre a ascens&#227;o do Product Engineer, o perfil de desenvolvedor que vai al&#233;m do c&#243;digo para focar em impacto de neg&#243;cio e produto.</p><h2>&#129321; Favoritos</h2><p><strong><a href="/__u/alklaser.substack.com/p/o-iconoclasta-otimista-edicao-12?utm_source=techleadsclub&amp;utm_medium=newsletter&amp;utm_term=71">Automa&#231;&#227;o em est&#233;reo: quando bits e &#225;tomos colidem: o novo mapa do trabalho na Era da IA</a></strong></p><p><span class="mention-wrap" data-attrs="{&quot;name&quot;:&quot;Alexandre Klaser&quot;,&quot;id&quot;:319982424,&quot;type&quot;:&quot;user&quot;,&quot;url&quot;:null,&quot;photo_url&quot;:&quot;https://substack-post-media.s3.amazonaws.com/public/images/c2977ceb-f958-48c0-ab45-b13882f6f04d_1156x1156.jpeg&quot;,&quot;uuid&quot;:&quot;de581b38-ee95-43db-b478-9dc860a134d4&quot;}" data-component-name="MentionToDOM"></span> defende que organiza&#231;&#245;es precisam operar IA como infraestrutura orientada a ativos e redesenhar processos para capturar valor real, pois apenas 6% das empresas reportam impacto significativo no EBIT com IA.</p><p><strong><a href="https://newsletter.nagringa.dev/p/onde-estao-as-vagas-de-9k?utm_source=techleadsclub&amp;utm_medium=newsletter&amp;utm_term=71">Onde est&#227;o as vagas de $9k/m&#234;s? (838 delas est&#227;o aqui)</a></strong></p><p><span class="mention-wrap" data-attrs="{&quot;name&quot;:&quot;Lucas Faria&quot;,&quot;id&quot;:27397137,&quot;type&quot;:&quot;user&quot;,&quot;url&quot;:null,&quot;photo_url&quot;:&quot;https://substack-post-media.s3.amazonaws.com/public/images/ee3e99b9-18d1-4b16-b25a-39deeaffb461_1553x1553.jpeg&quot;,&quot;uuid&quot;:&quot;c5241fc1-2a2b-437a-8001-6f1e212bbe95&quot;}" data-component-name="MentionToDOM"></span> identifica 838 vagas pagando mais de $90 mil anuais em empresas internacionais, argumentando que desenvolvedores devem aplicar diretamente &#224;s empresas em vez de depender de consultorias que reduzem a remunera&#231;&#227;o ao atuar como intermedi&#225;rios.</p><p><strong><a href="https://jasonwillems.com/technology/2025/12/17/Tech-Is-Fun-Again/?utm_source=techleadsclub&amp;utm_medium=newsletter&amp;utm_term=71">Tech is Fun Again: The Tech Monoculture is Finally Breaking</a></strong></p><p>A ind&#250;stria de tecnologia est&#225; se diversificando ap&#243;s anos de dom&#237;nio do Vale do Sil&#237;cio, com plataformas descentralizadas e IA acess&#237;vel democratizando a inova&#231;&#227;o.</p><p><strong><a href="https://fs.blog/mental-models/?utm_source=techleadsclub&amp;utm_medium=newsletter&amp;utm_term=71">Mental Models: The Best Way to Make Intelligent Decisions</a></strong></p><p>Farnam Street explica cerca de 100 modelos mentais organizados por disciplinas como f&#237;sica, biologia e economia para melhorar a tomada de decis&#245;es.</p><p><strong><a href="https://dropbox.tech/machine-learning/vp-josh-clemm-knowledge-graphs-mcp-and-dspy-dash?utm_source=techleadsclub&amp;utm_medium=newsletter&amp;utm_term=71">Engineering VP Josh Clemm on how we use knowledge graphs, MCP, and DSPy in Dash</a></strong></p><p>Dropbox Dash utiliza grafos de conhecimento, MCP e DSPy para criar um mecanismo de contexto que indexa conte&#250;do de m&#250;ltiplas aplica&#231;&#245;es SaaS, permitindo busca e agentes de IA unificados no ambiente de trabalho.</p><p><strong><a href="/__u/addyo.substack.com/p/the-80-problem-in-agentic-coding?utm_source=techleadsclub&amp;utm_medium=newsletter&amp;utm_term=71">The 80% Problem in Agentic Coding</a></strong></p><p>IA evoluiu erros de sintaxe para falhas conceituais, criando &#8220;d&#237;vida de compreens&#227;o&#8221; onde desenvolvedores entendem menos do pr&#243;prio c&#243;digo base conforme agentes geram mais c&#243;digo.</p><p><strong><a href="https://martinfowler.com/articles/exploring-gen-ai/ccmenu-quality.html?utm_source=techleadsclub&amp;utm_medium=newsletter&amp;utm_term=71">Assessing internal quality while coding with an agent</a></strong></p><p>Erik Doernenburg testa como agentes de programa&#231;&#227;o afetam a qualidade interna do c&#243;digo ao adicionar funcionalidades no CCMenu.</p><p><strong><a href="https://openai.com/index/scaling-postgresql/?utm_source=techleadsclub&amp;utm_medium=newsletter&amp;utm_term=71">Scaling PostgreSQL to power 800 million ChatGPT users</a></strong></p><p>OpenAI escala PostgreSQL para suportar 800 milh&#245;es de usu&#225;rios do ChatGPT atrav&#233;s de sharding, otimiza&#231;&#245;es de consultas e migra&#231;&#227;o para hardware mais potente.</p><p><strong><a href="https://seangoedecke.com/how-does-ai-impact-skill-formation/?utm_source=techleadsclub&amp;utm_medium=newsletter&amp;utm_term=71">How does AI impact skill formation?</a></strong></p><p>Estudo da Anthropic mostra que usu&#225;rios de IA que copiaram c&#243;digo diretamente tiveram desempenho 25% mais r&#225;pido, mas metade dos participantes perdeu tempo digitando manualmente o c&#243;digo gerado pela IA.</p><p><strong><a href="https://blog.algomaster.io/p/scaling-a-system-from-0-to-10-million-users?utm_source=techleadsclub&amp;utm_medium=newsletter&amp;utm_term=71">How to Scale a System from 0 to 10 million+ Users</a></strong></p><p>Ashish Pratap Singh apresenta estrat&#233;gias progressivas para escalar sistemas desde o primeiro usu&#225;rio at&#233; mais de 10 milh&#245;es, cobrindo desde arquiteturas simples at&#233; microsservi&#231;os distribu&#237;dos com cache, balanceamento de carga e bancos de dados especializados.</p><h2>&#128279; Outros</h2><p><strong><a href="https://www.seangoedecke.com/how-i-estimate-work/?utm_source=techleadsclub&amp;utm_medium=newsletter&amp;utm_term=71">How I estimate work as a staff software engineer</a></strong></p><p><strong><a href="https://martinfowler.com/bliki/ExcessiveBold.html?utm_source=techleadsclub&amp;utm_medium=newsletter&amp;utm_term=71">Bliki: Excessive Bold</a></strong></p><p><strong><a href="https://rselbach.com/your-sub-is-now-my-weekend-project?utm_source=techleadsclub&amp;utm_medium=newsletter&amp;utm_term=71">Your App Subscription Is Now My Weekend Project &#183; Roberto Selbach</a></strong></p><p><strong><a href="https://henrikwarne.com/2026/01/31/in-praise-of-dry-run/?utm_source=techleadsclub&amp;utm_medium=newsletter&amp;utm_term=71">In praise of &#8211;dry-run</a></strong></p><p><strong><a href="https://seangoedecke.com/knowing-how-to-drive-the-car/?utm_source=techleadsclub&amp;utm_medium=newsletter&amp;utm_term=71">You have to know how to drive the car</a></strong></p><p><strong><a href="https://rednafi.com/go/mocking-libraries-bleh/?utm_source=techleadsclub&amp;utm_medium=newsletter&amp;utm_term=71">Your Go tests probably don&#8217;t need a mocking library</a></strong></p><p><strong><a href="https://mariozechner.at/posts/2025-11-30-pi-coding-agent/?utm_source=techleadsclub&amp;utm_medium=newsletter&amp;utm_term=71">What I learned building an opinionated and minimal coding agent</a></strong></p><p><strong><a href="https://boringsql.com/products/regresql/?utm_source=techleadsclub&amp;utm_medium=newsletter&amp;utm_term=71">RegreSQL - SQL Regression Testing Tool</a></strong></p><p><strong><a href="https://erikjohannes.no/posts/20260130-outsourcing-thinking/index.html?utm_source=techleadsclub&amp;utm_medium=newsletter&amp;utm_term=71">Outsourcing thinking</a></strong></p><p><strong><a href="https://www.youtube.com/watch?v=bOVORH4-CEw&amp;utm_source=techleadsclub&amp;utm_medium=newsletter&amp;utm_term=71">O que eu penso do mercado tech em 2026 (&#233; ruim)</a></strong></p><p><strong><a href="https://engineering.fb.com/2026/01/27/security/rust-at-scale-security-whatsapp/?utm_source=techleadsclub&amp;utm_medium=newsletter&amp;utm_term=71">Rust at Scale: An Added Layer of Security for WhatsApp</a></strong></p><p><strong><a href="https://newsletter.systemdesigncodex.com/p/synchronous-communication-is-not?utm_source=techleadsclub&amp;utm_medium=newsletter&amp;utm_term=71">Synchronous Communication is NOT the Only Way</a></strong></p><p><strong><a href="https://supabase.com/blog/postgres-best-practices-for-ai-agents?utm_source=techleadsclub&amp;utm_medium=newsletter&amp;utm_term=71">Introducing: Postgres Best Practices</a></strong></p><p><strong><a href="https://newsletter.pragmaticengineer.com/p/ai-first-makeover-craft?utm_source=techleadsclub&amp;utm_medium=newsletter&amp;utm_term=71">Inside a five-year-old startup&#8217;s rapid AI makeover</a></strong></p><p><strong><a href="https://news.ycombinator.com/item?id=46731068&amp;utm_source=techleadsclub&amp;utm_medium=newsletter&amp;utm_term=71">Ask HN: What&#8217;s the current best local/open speech-to-speech setup?</a></strong></p><p><strong><a href="https://maggieappleton.com/gastown?utm_source=techleadsclub&amp;utm_medium=newsletter&amp;utm_term=71">Gas Town&#8217;s Agent Patterns, Design Bottlenecks, and Vibecoding at Scale</a></strong></p><p><strong><a href="https://github.com/ddd-crew/ddd-starter-modelling-process?utm_source=techleadsclub&amp;utm_medium=newsletter&amp;utm_term=71">ddd-crew/ddd-starter-modelling-process: If you&#8217;re new to DDD and not sure where to start, this process will guide you step-by-step</a></strong></p><p><strong><a href="https://railsui.com/blog/what-finally-posting-rails-ui-to-hacker-news-taught-me?utm_source=techleadsclub&amp;utm_medium=newsletter&amp;utm_term=71">What finally posting Rails UI to Hacker News taught me</a></strong></p><p><strong><a href="https://evilmartians.com/chronicles/optimistic-ui-in-rails-with-optimism-and-inertia?utm_source=techleadsclub&amp;utm_medium=newsletter&amp;utm_term=71">Optimistic UI in Rails with optimism... and Inertia</a></strong></p><p><strong><a href="https://github.com/jmuncor/tokentap?utm_source=techleadsclub&amp;utm_medium=newsletter&amp;utm_term=71">jmuncor/tokentap: Intercept LLM API traffic and visualize token usage in a real-time terminal dashboard</a></strong></p><div class="captioned-button-wrap" data-attrs="{&quot;url&quot;:&quot;https://techleadsclub.substack.com/p/newsletter-71?utm_source=substack&utm_medium=email&utm_content=share&action=share&quot;,&quot;text&quot;:&quot;Compartilhar&quot;}" data-component-name="CaptionedButtonToDOM"><div class="preamble"><p class="cta-caption">Est&#225; gostando da newsletter? Deixe um like e compartilhe com seus amigos e colegas &#128588;</p></div><p class="button-wrapper" data-attrs="{&quot;url&quot;:&quot;https://techleadsclub.substack.com/p/newsletter-71?utm_source=substack&utm_medium=email&utm_content=share&action=share&quot;,&quot;text&quot;:&quot;Compartilhar&quot;}" data-component-name="ButtonCreateButton"><a class="button primary" href="/__u/techleadsclub.substack.com/p/newsletter-71?utm_source=substack&amp;utm_medium=email&amp;utm_content=share&amp;action=share"><span>Compartilhar</span></a></p></div>]]></content:encoded></item><item><title><![CDATA[🗞️ Newsletter #70]]></title><description><![CDATA[Fluxo completo de desenvolvimento com IA, Virar Tech Lead, F&#237;sica venceu hype da IA, Specs para agentes de IA, Burnout de dev apaixonado e mais]]></description><link>https://techleadsclub.substack.com/p/newsletter-70</link><guid isPermaLink="false">https://techleadsclub.substack.com/p/newsletter-70</guid><dc:creator><![CDATA[William Calderipe]]></dc:creator><pubDate>Fri, 23 Jan 2026 21:39:35 GMT</pubDate><enclosure url="https://substackcdn.com/image/youtube/w_728,c_limit/-jPYunHFGL4" length="0" type="image/jpeg"/><content:encoded><![CDATA[<h2>&#128204; Destaques</h2><div id="youtube2--jPYunHFGL4" class="youtube-wrap" data-attrs="{&quot;videoId&quot;:&quot;-jPYunHFGL4&quot;,&quot;startTime&quot;:null,&quot;endTime&quot;:null}" data-component-name="Youtube2ToDOM"><div class="youtube-inner"><iframe src="https://www.youtube-nocookie.com/embed/-jPYunHFGL4?rel=0&amp;autoplay=0&amp;showinfo=0&amp;enablejsapi=0" frameborder="0" loading="lazy" gesture="media" allow="autoplay; fullscreen" allowautoplay="true" allowfullscreen="true" width="728" height="409"></iframe></div></div><p>Waldemar Neto apresenta fluxo completo de desenvolvimento com IA que vai do design doc ao c&#243;digo em produ&#231;&#227;o, enfatizando contexto estruturado sobre prompts e paraleliza&#231;&#227;o de tarefas.</p><h2>&#129321; Favoritos</h2><p><strong><a href="https://www.youtube.com/watch?v=MS6QOVGOdb8&amp;utm_source=techleadsclub&amp;utm_medium=newsletter&amp;utm_term=70-real">Assista Isso Antes de Virar Tech Lead</a></strong></p><p>Felipe Adamoli alerta que assumir a posi&#231;&#227;o de Tech Lead prematuramente pode criar lacunas t&#233;cnicas e burnout, recomendando consolidar habilidades de engenharia antes da transi&#231;&#227;o para lideran&#231;a.</p><p><strong><a href="/__u/alklaser.substack.com/p/o-iconoclasta-otimista-edicao-11?utm_source=techleadsclub&amp;utm_medium=newsletter&amp;utm_term=70-real">O fim da magia: por que a f&#237;sica (e a infraestrutura) venceram o hype da IA</a></strong></p><p>Alexandre Klaser defende que o valor da IA migrou dos modelos para a infraestrutura operacional, exigindo disciplina financeira e governan&#231;a estrutural sobre intelig&#234;ncia abstrata.</p><p><strong><a href="/__u/addyo.substack.com/p/how-to-write-a-good-spec-for-ai-agents?utm_source=techleadsclub&amp;utm_medium=newsletter&amp;utm_term=70-real">How to write a good spec for AI agents</a></strong></p><p>Addy Osmani ensina que especifica&#231;&#245;es para agentes de IA devem ser claras e modulares, come&#231;ando com vis&#227;o geral e deixando o agente expandir os detalhes, dividindo tarefas grandes em prompts pequenos com contexto espec&#237;fico, incluindo verifica&#231;&#245;es autom&#225;ticas e limites em tr&#234;s n&#237;veis (sempre fazer, perguntar primeiro, nunca fazer), e iterando continuamente atrav&#233;s de testes e feedback.</p><p><strong><a href="https://dev.to/georgekobaidze/the-real-cost-of-loving-what-you-do-the-uncomfortable-truth-about-developer-burnout-43n6?utm_source=techleadsclub&amp;utm_medium=newsletter&amp;utm_term=70-real">The Real Cost of Loving What You Do: The Uncomfortable Truth About Developer Burnout</a></strong></p><p>Desenvolvedores que amam programa&#231;&#227;o enfrentam burnout ao trabalharem excessivamente sem perceber os limites entre paix&#227;o e explora&#231;&#227;o profissional.</p><p><strong><a href="https://newsletter.pragmaticengineer.com/p/the-product-minded-engineer?utm_source=techleadsclub&amp;utm_medium=newsletter&amp;utm_term=70-real">The Product-Minded Engineer: The importance of good errors and warnings</a></strong></p><p>Startups contratam engenheiros orientados por produto que combinam cria&#231;&#227;o de recursos com ideias de neg&#243;cio, habilidade valorizada pela era da IA.</p><p><strong><a href="https://seangoedecke.com/addicted-to-being-useful/?utm_source=techleadsclub&amp;utm_medium=newsletter&amp;utm_term=70-real">I&#8217;m addicted to being useful</a></strong></p><p>Staff engineer Sean Goedecke descreve sua compuls&#227;o por resolver problemas t&#233;cnicos como &#8220;v&#237;cio em ser &#250;til&#8221; e compara desenvolvedores motivados por satisfa&#231;&#227;o interna a c&#227;es de trabalho que executam tarefas por prazer pr&#243;prio.</p><p><strong><a href="https://martinfowler.com/articles/convo-what-how.html?utm_source=techleadsclub&amp;utm_medium=newsletter&amp;utm_term=70-real">Conversation: LLMs and the what/how loop</a></strong></p><p>LLMs facilitam a explora&#231;&#227;o do ciclo de feedback entre &#8220;o que&#8221; o software deve fazer e &#8220;como&#8221; implement&#225;-lo atrav&#233;s de abstra&#231;&#245;es mais fluidas que TDD.</p><p><strong><a href="https://newsletter.eng-leadership.com/p/companies-should-hire-junior-engineers?publication_id=1115815&amp;post_id=185323602&amp;isFreemail=true&amp;r=39ysc&amp;triedRedirect=true&amp;utm_source=techleadsclub&amp;utm_medium=newsletter&amp;utm_term=70-real">Companies Should Hire Junior Engineers</a></strong></p><p>Empresas que contratam apenas engenheiros seniores criam escassez de talentos ao n&#227;o desenvolver profissionais juniores.</p><p><strong><a href="https://www.caimito.net/en/blog/2025/12/07/the-recurring-dream-of-replacing-developers.html?utm_source=techleadsclub&amp;utm_medium=newsletter&amp;utm_term=70-real">Why We&#8217;ve Tried to Replace Developers Every Decade Since 1969</a></strong></p><p>A ind&#250;stria de software tenta substituir desenvolvedores por ferramentas automatizadas desde 1969, mas todas as tentativas falharam porque programa&#231;&#227;o envolve resolver problemas complexos que exigem criatividade humana.</p><p><strong><a href="https://fromjason.xyz/p/notebook/slop-is-everywhere-for-those-with-eyes-to-see/?utm_source=techleadsclub&amp;utm_medium=newsletter&amp;utm_term=70-real">Slop is Everywhere For Those With Eyes to See</a></strong></p><p>O termo &#8220;slop&#8221; descreve conte&#250;do digital gerado por IA de baixa qualidade que est&#225; saturando plataformas online.</p><p><strong><a href="https://simonwillison.net/2026/Jan/19/scaling-long-running-autonomous-coding/?utm_source=techleadsclub&amp;utm_medium=newsletter&amp;utm_term=70-real">Scaling long-running autonomous coding</a></strong></p><p>Simon Willison analisa desafios t&#233;cnicos para escalar sistemas de programa&#231;&#227;o aut&#244;noma que executam por longos per&#237;odos.</p><h2>&#128279; Outros</h2><p><strong><a href="https://newsletter.pragmaticengineer.com/p/how-aws-s3-is-built?utm_source=techleadsclub&amp;utm_medium=newsletter&amp;utm_term=70-real">How AWS S3 is built</a></strong></p><p><strong><a href="https://newsletter.getdx.com/p/ai-tooling-benchmarks-pr-throughput?utm_source=techleadsclub&amp;utm_medium=newsletter&amp;utm_term=70-real">AI tooling benchmarks: PR throughput and usage by tool (Q1 2026)</a></strong></p><p><strong><a href="https://hugodaniel.com/posts/claude-code-banned-me/?utm_source=techleadsclub&amp;utm_medium=newsletter&amp;utm_term=70-real">I was banned from Claude for scaffolding a Claude.md file?</a></strong></p><p><strong><a href="https://rselbach.com/your-sub-is-now-my-weekend-project/?utm_source=techleadsclub&amp;utm_medium=newsletter&amp;utm_term=70-real">Your App Subscription Is Now My Weekend Project &#183; Roberto Selbach</a></strong></p><p><strong><a href="https://www.youtube.com/watch?v=1em64iUFt3U&amp;utm_source=techleadsclub&amp;utm_medium=newsletter&amp;utm_term=70-real">How a Meta PM ships products without ever writing code</a></strong></p><p><strong><a href="https://skills.sh/?utm_source=techleadsclub&amp;utm_medium=newsletter&amp;utm_term=70-real">The Agent Skills Directory</a></strong></p><p><strong><a href="https://island94.org/2026/01/goodjob-solid-queue-sidekiq-active-job-in-2026?utm_source=techleadsclub&amp;utm_medium=newsletter&amp;utm_term=70-real">GoodJob, Solid Queue, Sidekiq, Active Job, in 2026</a></strong></p><p><strong><a href="https://hakibenita.com/postgresql-unconventional-optimizations?utm_source=techleadsclub&amp;utm_medium=newsletter&amp;utm_term=70-real">Unconventional PostgreSQL Optimizations</a></strong></p><p><strong><a href="https://atlas9.dev/blog/soft-delete.html?utm_source=techleadsclub&amp;utm_medium=newsletter&amp;utm_term=70-real">The challenges of soft delete</a></strong></p><p><strong><a href="https://www.dolthub.com/blog/2026-01-09-golang-panic-recovery/?utm_source=techleadsclub&amp;utm_medium=newsletter&amp;utm_term=70-real">Golang Panic Recovery</a></strong></p><p><strong><a href="https://github.com/golang/go/issues/77273?utm_source=techleadsclub&amp;utm_medium=newsletter&amp;utm_term=70-real">Proposal: Generic Methods for Go</a></strong></p><p><strong><a href="https://github.com/nimin1/system-design-vibecoding?tab=readme-ov-file&amp;utm_source=techleadsclub&amp;utm_medium=newsletter&amp;utm_term=70-real">System Design explained from first principles to senior engineer-level thinking, with a focus on AI-assisted development</a></strong></p><p><strong><a href="https://www.vibekanban.com/?utm_source=techleadsclub&amp;utm_medium=newsletter&amp;utm_term=70-real">Vibe Kanban - Orchestrate AI Coding Agents</a></strong></p><p><strong><a href="https://seangoedecke.com/gas-and-ralph/?utm_source=techleadsclub&amp;utm_medium=newsletter&amp;utm_term=70-real">Crypto grifters are recruiting open-source AI developers</a></strong></p><p><strong><a href="https://radicle.xyz/?utm_source=techleadsclub&amp;utm_medium=newsletter&amp;utm_term=70-real">Radicle: The Sovereign Forge (git distribu&#237;do)</a></strong></p><p><strong><a href="https://github.com/yichuan-w/LEANN?utm_source=techleadsclub&amp;utm_medium=newsletter&amp;utm_term=70-real">yichuan-w/LEANN: RAG on Everything with LEANN</a></strong></p><p><strong><a href="https://github.com/usestrix/strix?utm_source=techleadsclub&amp;utm_medium=newsletter&amp;utm_term=70-real">usestrix/strix: Open-source AI agents for penetration testing</a></strong></p><p><strong><a href="https://github.com/farion1231/cc-switch?tab=readme-ov-file&amp;utm_source=techleadsclub&amp;utm_medium=newsletter&amp;utm_term=70-real">farion1231/cc-switch: A cross-platform desktop All-in-One assistant tool</a></strong></p><p><strong><a href="https://github.com/steveyegge/gastown?utm_source=techleadsclub&amp;utm_medium=newsletter&amp;utm_term=70-real">steveyegge/gastown: Multi-agent workspace manager</a></strong></p><p><strong><a href="https://github.com/firecrawl/open-scouts?utm_source=techleadsclub&amp;utm_medium=newsletter&amp;utm_term=70-real">firecrawl/open-scouts: AI-powered web monitoring platform</a></strong></p><p><strong><a href="https://github.com/metaspartan/mactop?utm_source=techleadsclub&amp;utm_medium=newsletter&amp;utm_term=70-real">metaspartan/mactop: mactop - Apple Silicon Monitor Top</a></strong></p><p><strong><a href="https://github.com/ramonvermeulen/whosthere?utm_source=techleadsclub&amp;utm_medium=newsletter&amp;utm_term=70-real">ramonvermeulen/whosthere: Discover, explore, and understand your LAN in an intuitive way</a></strong></p><div class="captioned-button-wrap" data-attrs="{&quot;url&quot;:&quot;https://techleadsclub.substack.com/p/newsletter-70?utm_source=substack&utm_medium=email&utm_content=share&action=share&quot;,&quot;text&quot;:&quot;Compartilhar&quot;}" data-component-name="CaptionedButtonToDOM"><div class="preamble"><p class="cta-caption">Est&#225; 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