Where does David Lieb work?

David Lieb is Founder/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 has David Lieb invested in?

Investments tracked here include Bump, Flexport, Rewind.ai, Rippling, Skydio, Tally.

Where did David Lieb go to school?

David Lieb studied at Stanford University (MSEE, Machine Learning and Computer Vision); Princeton University (BSEE, Electrical Engineering); The University of Chicago Booth School of Business (1/2 MBA, Entrepreneurship).

Does David Lieb lead rounds?

Yes — David Lieb has led 1 tracked investment.

David Lieb

InvestorFounder

General Partner at Y Combinator · Founder/CEO at Bump

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.

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.

From David's own website — common ground for a warm intro.

Founder/CEO at Bump YC 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 · 2

Andreessen HorowitzMenlo Park · $500K – $50M checks Y CombinatorSan Francisco · $500K checks · since 2009

Co-founders at Bump

Andy HuibersFounder

Experience

Y CombinatorGeneral Partnercurrent2024 — present
Y CombinatorVisiting Partner2022 — 2024
70+ startupsStartup Helper / Investorcurrent2013 — present
TallyMember, Board of Directors2021 — 2024
GoogleSenior Director, Google Photos2013 — 2022Mountain View, CA
Bump Technologies (acquired by Google)Co-founder and CEO2008 — 2013
Texas InstrumentsTechnology Strategist2007 — 2008
Texas InstrumentsAlgorithm Engineer2001 — 2007

Education

Stanford UniversityMSEE, Machine Learning and Computer Vision2003 — 2005
Princeton UniversityBSEE, Electrical Engineering1999 — 2003
The University of Chicago Booth School of Business1/2 MBA, Entrepreneurship2008 — 2009

Deals · 1

BumpLed round

via Y Combinator · filed Jun 2009

Attribution from SEC filings, press coverage, and firm rosters.

Other disclosed investments

Investor

FlexportRewind.aiRipplingSkydioTally

Sources: the firm's website · curated public sources.

Podcasts & interviews

featuring David Lieb

Dot 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

Colleagues at Y Combinator

Aaron Epstein

General Partner at Y Combinator

Andrew Miklas

General Partner at Y Combinator

Ankit Gupta

General Partner at Y Combinator

Brad Flora

Backing expeditions into the future

Chris Golda

General Partner at Y Combinator

Diana Hu

General Partner at Y Combinator

Garry Tan

President & CEO of Y Combinator

Grey Baker

General Partner at Y Combinator

Network11

Paul GrahamScout

Co-founder of Y Combinator

Andrew ParkerScout

General Partner at Spero Ventures

Austin WaltersScout

Managing Partner at SpringTide Ventures

Kulveer TaggarScout

Investor

Liz WesselScout

Partner at First Round Capital

Semil ShahScout

Investor at Haystack

Colin Evans

Investor at Sandwith Ventures, LLC

Itamar Novick

Managing Partner at Recursive Ventures

Jai Malik

Venture Partner at Redbud VC

Loren Straub

General Partner at Bowery Capital

Warrick Shanly

Investment Advisor at Soma Capital

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.
Where does David Lieb work?: David Lieb is Founder/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, Flexport, Rewind.ai, Rippling, Skydio, Tally.
Where did David Lieb go to school?: David Lieb studied at Stanford University (MSEE, Machine Learning and Computer Vision); Princeton University (BSEE, Electrical Engineering); The University of Chicago Booth School of Business (1/2 MBA, Entrepreneurship).
Does David Lieb lead rounds?: Yes — David Lieb has led 1 tracked investment.