Paul Buchheit is an entrepreneur and angel investor based in Mountain View, California. Paul is the Co-Founder and serves as a Partner for Y Combinator. He also now runs the incubator, recently renamed Y Combinator Core. The original program, now called Y Combinator Core, continues under the leadership of Paul. Prior to that, he was an employee at Google where he was the Creator and Lead Developer of Gmail. He is a programmer and was also the Founder of FriendFeed which later got acquired by Facebook in a private transaction in 2009. After selling Friendfeed and working for Facebook for a few years, he decided to shift his focus towards angel investing. With his money, he has invested in over 83 start ups all over the United States. He founded a capital firm known as Y Combinator and is responsible for investing in budding startups around the nation.Mr. Buchheit left Facebook in 2010 and became a partner in the venture capital firm, Y Combination. He served as an Engineer for Intel, Sun Microsystems and Microsoft. He prefers to invest in the media, information technology, health, enterprise software and analytics based companies operating in Silicon Valley and Mountain View.