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Addy Osmani
Addy Osmani is an engineering manager at Google working on Chrome and Web Platform. He is the author of the popular book, 'Learning JavaScript Design Patterns,' and maintains a number of open-source projects, including Lighthouse, a performance auditing tool for the web.
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Check the latest blog posts of Addy Osmani below
The Factory Model: How Coding Agents Changed Software Engineering
February 25, 2026
Software engineering is not about writing code anymore. It is about building the factory that builds your software.
Stop Using /init for AGENTS.md
February 23, 2026
Two papers published in early 2026 suggest you might have just made your agent slower, more expensive, and no more accurate. The right mental model is to treat AGENTS.md as a living list of codebase smells you haven't fixed yet, not a permanent configuration.
Bias Toward Action
February 15, 2026
Bias toward action is defaulting to the smallest responsible step that produces real feedback, while pre-committing to guardrails so that being wrong is survivable and quickly correctable.
14 More Lessons from 14 years at Google
February 12, 2026
More lessons learned from 14 years of engineering at Google, focusing on what truly matters beyond just writing great code.
Claude Code Swarms
February 05, 2026
Claude Code now supports agent teams - coordinated swarms of AI agents that research, debug, and build in parallel. What was feature-flagged is now real. Here's what it means and how to use it.
Agentic Engineering
February 04, 2026
Agentic Engineering is a disciplined approach to AI-assisted software development that emphasizes human oversight and engineering rigor, distinguishing it from the more casual 'vibe coding' style.
Self-Improving Coding Agents
January 31, 2026
Imagine ending your workday and waking up to new features coded, tested, and ready for review. This is the promise of autonomous AI coding agents harnessing tools like Claude Code in continuous loops to improve and ship code while you sleep. In this write-up, I will ll cover how to set up these self-improving agent loops, covering everything from orchestrating the loops and structuring context files to memory persistence, QA validation, scaling, debugging, and risk management.
How to write a good spec for AI agents
January 13, 2026
Learn how to write effective specifications for AI coding agents to improve clarity, focus, and productivity in your AI-driven development workflows.
Your AI coding agents need a manager
January 08, 2026
In the near future, high-leverage developers look like async-first managers running parallel AI coding agents. The skills that make someone a strong tech lead or manager translate directly to AI coding - because at scale, it stops being just a context problem and becomes a management problem.
AI writes code faster. Your job is still to prove it works.
January 07, 2026
AI did not kill code review. It made the burden of proof explicit. Ship changes with evidence like manual verification and automated tests, then use review for risk, intent, and accountability.
The Next Two Years of Software Engineering
January 05, 2026
Exploring five critical questions shaping software engineering through 2026, with contrasting scenarios for each. These lenses help prepare for the evolving landscape of coding in an AI-driven world.
My LLM coding workflow going into 2026
January 04, 2026
AI coding assistants became game-changers this year, but harnessing them effectively takes skill and structure. Here's my workflow for planning, coding, and collaborating with AI going into 2026.
21 Lessons From 14 Years at Google
January 03, 2026
Lessons learned from 14 years of engineering at Google, focusing on what truly matters beyond just writing great code.
The future of agentic coding: conductors to orchestrators
January 02, 2026
AI coding assistants have quickly moved from novelty to necessity where up to 90% of software engineers use some kind of AI for coding. But a new paradigm is emerging in software development
Gemini CLI Tips and Tricks
January 01, 2026
This guide covers ~30 pro-tips for effectively using Gemini CLI for agentic coding for Gemini 2.5, 3.0 and beyond
Every time we've made it easier to write software, we've ended up writing exponentially more of it. History suggests we won't do less work - we'll discover we've been massively under-investing in knowledge work because it was too expensive to do all the things that were actually worth doing.
Introducing Gemini 3 Flash
December 17, 2025
Today we are expanding the Gemini 3 model family with the release of Gemini 3 Flash which offers frontier intelligence built for speed at a fraction of the cost.
Hello, Gemini.
December 09, 2025
Gemini! I'm joining Google Cloud AI to focus on helping developers and businesses succeed with Gemini, Vertex AI, and the Agent Development Kit.
Farewell for now, Chrome.
November 30, 2025
After almost 14 years on the Chrome team, Im moving onto a new chapter. Here is a look back at some of what we built together
What's New in Gemini 3.0
November 25, 2025
We recently shipped Gemini 3 Pro live across Google AI Studio, the Gemini app, Vertex AI, Searchs AI Mode, Google Antigravity, and more. Here is what actually shipped, how it all fits together, and what it unlocks for developers.
High Agency Matters
October 28, 2025
High agency is the habit of seeing it, owning it, and moving it forward. In the long run initiative beats intellect. This essay explains what agency is, why it is scarce, and how to develop and hire for it.
The History of Core Web Vitals
October 02, 2025
This write-up is a history of how Core Web Vitals came to be based on my recollections from our work on it at Google from 2014 onwards
Give your AI eyes: Introducing Chrome DevTools MCP
September 25, 2025
Chrome DevTools MCP is a newly announced tool that allows AI coding assistants to **see and interact with a live Chrome browser