David Lieb

David Lieb is a General Partner at Y Combinator who co-founded Bump - the app that let phones share data by physically bumping together, reaching 150 million users before being acquired by Google in 2013. After the acquisition, his team's unreleased photo-sharing project became Google Photos, which Lieb led as Senior Director for nine years until it reached over 1 billion users. Now at YC, he mentors early-stage founders drawing on his rare trifecta of experience: consumer hit, big-tech product leadership, and venture capital.