The Stale Closure Problem in React.
How to Fix It ? You can solve this problem in two ways, depending on how you want to manage your component. 1. Use a Functional State Updater The cleanest…
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Why is Meta destroying its engineering organization?
Hi – this is Gergely with a free issue of the Pragmatic Engineer Newsletter. In every issue, I cover challenges at Big Tech and startups through the lens of senior…
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How Skill Concentration Sets Tech and Healthcare Sectors Apart
While most US occupations require a diverse mix of skills, nearly a quarter of analyzed roles are “skill-concentrated,” meaning a single category accounts for more than 50% of all required…
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Principles of Mechanical Sympathy
Over the past decade, hardware has seen tremendous advances, from unified memory that’s redefined how consumer GPUs work, to neural engines that can run billion-parameter AI models on a laptop….
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Updating The Single Most Influential Book of the BASIC Era
In a way, these two books are responsible for my entire professional career. With early computers, you didn’t boot up to a fancy schmancy desktop, or a screen full of…
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Two AI Teams, Human-Gated: Running a Dev Team and a Content Team as Claude Code Subagents | by Sunny Park | Jul, 2026
A year of building AI into real business operations in public — assistants, an MCP server, multi-agent, a self-built ontology engine, an order-to-cash series. This isn’t a new build; it’s…
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How to Build Your Own MCP Server and Publish Your ChatGPT App with Supabase Auth and DigitalOcean
A new type of app is emerging with the development of LLMs and AI-native apps. It lives inside an AI chat (like ChatGPT) rather than being a fully native web…
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Is the FDE role becoming less desirable?
Hi, this is Gergely with a bonus, free issue of the Pragmatic Engineer Newsletter. In every issue, I cover Big Tech and startups through the lens of senior engineers and…
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AI agents are a confused deputy with the keys to your kingdom
Earlier in June, attackers took control of more than twenty thousand Instagram accounts, including the dormant Obama-era White House account, without writing an exploit or guessing a single password. They…
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The Dangerous Shortcut That Every React Beginner Takes.
Why Does React Even Care About Keys? To understand this, we have to look at how React handles the screen. React uses a Virtual DOM to keep track of what…
