In this conversation from Startup School Paris, Supabase CEO Paul Copplestone explains how a frustrating firebase migration led to an open-source side project that became one of the fastest-growing dev tool companies in the world. Apply to Y Combinator: https://www.ycombinator.com/apply Work at a startup: https://www.ycombinator.com/jobs Chapters: 00:00 — Intro 00:56 — Paul's Origin Story 02:13 — Two Failed Startups First 04:12 — Why Postgres? Why Open Source? 07:11 — The Pivot That Actually Worked 08:03 — Targeting YC Startups from Day One 09:45 — Fully Open Source — The Risky Choice 12:04 — Winning Developer Trust 13:33 — Time to Value: 8 Minutes → 5 Seconds 15:45 — The AI Second Life Begins 17:48 — Supabase for Platforms 19:09 — Everything Going Up Into the Right 20:44 — When Agents Became the Users 22:26 — Advice for Founders Building Dev Tools Today 23:47 — Why Open Source Won the LLM Era 25:32 — $500M Round, $10B Valuation 26:01 — What Keeps a Founder Grounded 28:31 — 360 People, 60 Countries, Zero Offices 30:14 — Outro