David Lieb
General Partner at Y Combinator
Mountain View, California
Writes $10K – $50K checks · typically $25K
FoundedBump · YC
About
Co-founder and CEO of Bump (acquired by Google) and co-founder of Google Photos. YC batch S09 (Bump).
David Lieb @dflieb
A “dot plot” is a logs visualization tool we created at Bump (by @andyhuibers) and used on Google Photos. It lets you see the activity of individual users while simultaneously seeing lots of users at once. https://t.co/EzzBCKdGds
Jul 9, 2026 · ♥ 21 · ⇄ 4
David Lieb @dflieb
Maybe you weren't meant to have a boss. https://t.co/ZKXX5Bn1em https://t.co/Hg2w60T5D4 https://t.co/12o9NpUSfM
Jun 24, 2026 · ♥ 280 · ⇄ 8
David Lieb @dflieb
Going through a health scare with our dog right now, and my god, I can’t imagine doing this without AI. Thanks to everyone for building this ❤️
Jun 20, 2026 · ♥ 125 · ⇄ 1
Invests in
AI & Machine LearningConsumer
Deals · 1
BumpLed round
via Y Combinator
Attribution from SEC filings, press coverage, and firm rosters.
Colleagues at Y Combinator
Network7
Investors connected to David in public investor directories — a warm-intro map.