
How I AI · 2026-06-29 · 52 min
Eddie Kim is the co-founder and CTO of the payroll and HR platform Gusto, which just crossed $1 billion in revenue and serves more than 500,000 small businesses. Recently he did something most CTOs don’t: he went back to writing code. With three other engineers and one designer, Eddie built Gusto Cofounder, a net-new AI product, from zero code to a tier-one launch in 10 weeks. He walks through how that team actually worked, why they threw out nearly every process, and how anyone can copy the approach. What you’ll learn: The trash-can method: how to write, review, and delete a full PR as a product decision instead of a planning doc The two-tool agent stack behind Gusto Cofounder The exact “perma-Zoom” setup that replaced standups, retros, and Slack threads for 10 weeks How a designer with no engineering background hit the 94th percentile for shipping code The eval-first workflow Eddie uses to fix real customer bugs with Claude Code How a non-technical leader can prototype an idea to win buy-in, then carry it all the way to production-quality code -