Mr. Jonathan Heiliger serves as Partner at Vertex Ventures US. He is a Board Observer of LaunchDarkly. He also served as a Board Member at Cloud Academy, Dor, and Vintra. Most recently, he was a General Partner with North Bridge Venture Partners, from April 2012 to November 2014. During his tenure, he started the seed practice and led investments in Lytro, Periscope.io, Quora, and Ravel Law. Prior to NBVP, he worked at Facebook, where he led global infrastructure, site architecture and internal systems as VP Infrastructure & Technical Operations, from 2007 until 2011. During that time Facebook grew from 35 million to over 800 million users. Before that, he held executive engineering roles at Wal-Mart and Danger (acquired by Microsoft). He also spent several years as Chief Operating Officer for Loudcloud (which became Opsware and was later acquired by HP). Earlier in his career, he co-founded and was CTO of GlobalCenter, and later founded Global Crossing's venture capital group. He currently serves on the board of directors of DuPont Fabros (DFT), Jive Software (JIVE), and Webmonsters. He also co-founded Coolan and served as an Advisor.