Notes on applied AI engineering, machine learning, and data science.
I’m a machine learning engineer with 20+ years of experience. I’ve worked at Airbnb and GitHub, including early LLM research used by OpenAI for code understanding. I’ve also led and contributed to popular open-source machine-learning tools.
I’m currently working to bring data science back to AI: helping teams debug, analyze, and measure their systems. I call this “evals,” and it’s the focus of my teaching, consulting, and writing.
🎓 Learn With Me #
I co-teach ** AI Evals for Engineers and PMs**, with over 4,500 students from 500+ companies (including OpenAI, Anthropic, and Google). Check the page for upcoming cohorts.
📮 Blog #
I often share my experience building AI products. Below is a selection of my long-form writing.
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📬 Follow Me #
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