Fundraising Fox
David Lieb
InvestorFounderGeneral Partner at Y Combinator · CEO at Bump
Mountain View, California
Writes $10K – $50K checks · typically $25K
FoundedBump · YC
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About
Co-founder and CEO of Bump (acquired by Google) and co-founder of Google Photos. Did YC S09.
Invests in
AI & Machine LearningConsumer
Beyond investing
- Founded
- Lieb co-founded Bump, a mobile app used by more than 150 million people to share photos and contact info by bumping phones together. At Bump, Lieb's team launched Flock, a photo-sharing app, and later built an unreleased camera roll app called Photoroll that fed into Google Photos.
- Education
- Studied at Princeton (EE/CS degree, EE/CS) Studied at Stanford (EE/CS degree, EE/CS) Studied at Chicago Booth (MBA (unfinished, dropped out))
- Family
- Lieb became a new parent around the time he was diagnosed with leukemia.
- More
- Apple featured Bump in its 'There's an app for that' TV spot. Lieb was diagnosed with leukemia, stepped away from work to focus on treatment, and is now in remission. Lieb's first angel investment, in Ryan Peterson's Flexport, came after meeting Peterson at a wedding.
Mentioned above: the Google mafia →
From David's own website — common ground for a warm intro.
CEO at BumpYC S09
Intro paths
David went through Y Combinator (Summer 2009) — any YC alum in your network can reach them through the YC community.
In turn, David can intro founders to Bump's investors below.
Bump's investors · 10
Co-founders at Bump
Deals · 1
BumpLed round
via Y Combinator · filed Jun 2009
Attribution from SEC filings, press coverage, and firm rosters.
Other disclosed investments
Investor
&AIAffil.aiAfternoonAgentPhoneAirAlexAlmondAndcoAnswergridArdenArtifactAstraeaAtlogAutostepAuxosBitBoardBloomBluedoorCadenceCanary TechnologiesCaseyChertChironCode FourCodeVizDeepSimdmodelE1OElectric AirEllipsisEndstackExpanseFanCaveFelafax AIFernstoneFlexportflowscopeFoundryFrescoFutureClinicGoldbridgeGolfGranolaGroundControlHaystack SoftwareHedgeHeliumHenryHexaHyperIncandorJunoKarmenKeyframe LabsKinect AIKirana AIKubecostKuliLakonia TechnologiesLevel FramesLogosGuardLÜK NetworkLumariLunavo TechnologiesLune AIMatchaMetalwareMetriportMiloMineflowMultiplierNames & FacesNorraOddpoolOpenFunnelOrigamiOuttalentParative Customer Intelligence PlatformPassagePavootPearAIPercivalPiggy RoboticsPippin / Rent the BackyardPixley AIPlumePrismProxisRebellyousRemedy TechnologiesReticularRewind.aiRipplingRiskAngleRudusRulebaseRunLocal AIRutterSaffronSaudara AISavaScrapybaraSemioticSixtyfourSkydioSorceSorenStandard DataStoria AIsupercontrastSuperlogSymphonyTallyThird ChairtransloadVelvetVendraVibeGradeVoiceOSVoquillWarmlyYouArtYouLearnZeon SystemsZeropathZip
Sources: the firm's website · curated public sources.
Podcasts & interviews
featuring David LiebDot Plots: How to Actually See What Your Users Are Doing
Startup School
AI Apps Are Broken — Here's How To Fix Them
The Breakdown
How AI Coding Agents Will Change Your Job
The Breakdown
How To Build The Future: Aravind Srinivas
How to Build the Future
How David Lieb Turned a Failing Startup Into Google Photos
Backstory
Twitter vs. X: Product Lessons For Startup Founders
The Breakdown
2 more appearances
Colleagues at Y Combinator
Network12
Investors connected to David in public investor directories — a warm-intro map.
Frequently asked questions
- Who is David Lieb?
- Co-founder and CEO of Bump (acquired by Google) and co-founder of Google Photos. Did YC S09.
- Where does David Lieb work?
- David Lieb is CEO of Bump and General Partner at Y Combinator.
- What does David Lieb invest in?
- David Lieb invests in AI & Machine Learning, Consumer.
- What check size does David Lieb write?
- David Lieb typically writes checks of $10K – $50K.
- What companies did David Lieb found?
- David Lieb founded Bump.
- What companies has David Lieb invested in?
- Investments tracked here include Bump, &AI, Affil.ai, Afternoon, AgentPhone, Air, Alex, Almond, Andco, Answergrid, Arden, Artifact, and 115 more.
- What podcasts and interviews feature David Lieb?
- Tracked appearances include "Dot Plots: How to Actually See What Your Users Are Doing", "AI Apps Are Broken — Here's How To Fix Them", "How AI Coding Agents Will Change Your Job", and 5 more.
- Does David Lieb lead rounds?
- Yes — David Lieb has led 1 tracked investment.
Founder mafias
Y Combinator mafia10,635
Also came through, then founded or led a company.
Stanford University mafia2,285
Also came through, then founded or led a company.
Google mafia1,711
Also came through, then founded or led a company.
The University of Chicago Booth School of Business mafia228
Also came through, then founded or led a company.
About this profile. Compiled from public sources — Y Combinator's own website, regulatory filings, press coverage and public professional profiles — and summarised by Fundraising Fox; every fact is kept with where it came from. Spotted an error, or would rather not be listed? Email privacy@fundraisingfox.com · How we build profiles · Your rights