Michael Siebel is Managing Director of Early Stage and a Group Partner at Y Combinator. He is an advisor and investor at Ingressive Capital. He is an advisor at Move, Apollo.io and Bellabeat. He is also an angel investor. He is an advisor to Outlierz Ventures, San Francisco, USA. He is a regional advisor at Microtraction. He has also worked as an advisor at Swapbox and GiveCampus. He is an advisor at Base Ventures. He was also co-founder and CEO of Justin.tv and Socialcam. Socialcam was sold to Autodesk in 2012, and under Emmett Scheer, Justin.tv evolved into Twitch.tv and was sold to Amazon in 2014. Before getting into startups, he served for a year as CFO in the U.S. Senate. He also serves on the board of directors of Dropbox.