A blog about product engineering — building software in the age of AI. I write about the whole arc: discovery, design, and shipping.

How Do You Test Code That's Different Every Time? I Added RAG to My Game and Had to Find Out

How a Creature Learns to Play With a Ball

Letting an LLM Drive a Live Web App — Safely

Letting an LLM Drive a Live Web App — Safely

I Asked Claude to Rebuild a 1996 Game. It Didn't Stop There

I Asked Claude to Rebuild a 1996 Game. It Didn't Stop There

How I Let an AI Agent Ship Code Overnight Without Waking Up to a Security Incident