The Founder Who Did YC 9 Years Apart: What Changed, What Didn't?

He did YC in 2016 from France with a Slack bot nobody had heard of.  9 years later, he came back… second company, second batch, $10M seed closed in 3 days. Dalton told him: "Don't overlearn." Quang is the founder of Vybe, a YC W25 company building the internal app layer for the AI era. Before that: Plato, a mentorship platform for engineers he grew to 70 people, raised $22M for, and sold to Coda, where he worked as a GM before quitting to start over.  In this conversation, we go deep on what it actually means to be a second-time YC founder: the overcorrections, the traps, and what's genuinely different about YC today vs. 2016. In this episode, you'll learn: → Why hiring zero people after raising $10M was the wrong overcorrection, and when Quang finally figured that out → How selling before the product was ready backfired, and what First Round's Liz told him to do instead → YC's self-fulfilling prophecy: how the program became a distribution machine, and why seed rounds that took 3 weeks in 2016 now close in 3 days → Why Vybe is quietly pivoting from "build internal apps" to "agents that use those apps", and what inspired it → The three-component PMF framework First Round runs with every portfolio company (and where most founders skip straight to step 3) Chapters: 00:00 Raising First 150K 00:30 YC Roaster Sponsor 01:14 Meet Quang Twice YC 02:03 Discovering YC In France 05:37 Slack Bot Breakthrough 06:34 Product Hunt To YC Interview 07:49 Silicon Valley Network Effect 13:47 Why Expense Reports Question 15:59 Getting The Acceptance Call 17:02 Moving To Mountain View 18:46 Building Bots In YC 20:31 Pivot To Plato Mentorship 22:02 Acquired By Coda 22:49 Coda Vs Retool Pain 26:37 Replit Agent Sparks Vibe 27:33 Internal Apps Are Still Hard 28:52 Quitting Coda For Vibe 29:00 Co Founder Wealthfront Pain 30:07 Back To Y Combinator 30:26 Avoiding Overcorrection Traps 31:48 Hiring Lessons And Rebound 34:33 Selling Too Early Too Hard 37:39 Five Customers Before Scale 39:17 Product Market Fit Framework 42:08 Claude Code Threat Or Tailwind 44:52 Open Claude And Apps Disappear 46:46 Vibe Agents And Integrations 49:10 YC Then Vs Now 55:49 Wrap Up And Subscribe — 🦞 Lobster Talks is the YC insider podcast for investors. New episodes weekly. Subscribe and turn on notifications so you don't miss the next one. Listen on the go: 🎧 Spotify: https://open.spotify.com/show/1u1JyRKH8JYFjhBkvTUOAP 🎧 Apple: https://apple.co/4cZ8RMm More from Lobster Capital: 📺 YouTube: https://www.youtube.com/@lobstercap 🌐 Website: https://lobstercap.com This Lobster Talks episode is brought to you by YC Roaster, a free tool helping founders improve their YC applications.  🔗 https://ycroaster.com