For some, working at Facebook is a career peak. For others, it's just the beginning.
These 25 Facebook alumni (a number of whom were integral members of the site's original team) have gone on to invest in and found some of the biggest companies and buzziest startups to date.
Check out what they've been up to since leaving their positions at the world's largest social network.
Adam D'Angelo started the wildly successful Q&A site Quora.
Position at Facebook: June 2004 - December 2005; CTO, November 2006 - June 2008
D'Angelo was Zuckerberg's high school friend who, according to D'Angelo's LinkedIn page, was in charge of "random stuff" during his first year and a half at Facebook. He became CTO in late 2006, leading new product development and managing the site's rapidly growing engineering team.
In 2009, D'Angelo founded the Q&A site Quora. D'Angelo's idea of success for Quora? "...If we could double the amount of knowledge available to people on the internet, that would be a really good outcome to me."
Aditya Agarwal cofounded Cove, which was acquired by Dropbox.
Position at Facebook: Engineer, director of product engineering, September 2005 - December 2010
After leaving Facebook, Agarwal and fellow Facebook alum and wife Ruchi Sanghvi cofounded Cove, which was acquired by Dropbox in early 2012. Agarwal is now VP of engineering at Dropbox where he oversees the company's engineering groups including new product development, infrastructure, platform, and operations. He is also a board member of the Indian e-commerce site, Flipkart.
Andrew McCollum runs next-generation TV streaming platform Philo.
Position at Facebook: Cofounder and engineer, February 2004 - September 2006
The guy who designed Facebook's first logo was also the site's cofounder and engineer. McCollum has admitted to intentionally flying under the radar as one of Facebook's founders.
McCollum is an entrepreneur-in-residence at New Enterprise Associates and Flybridge Capital Partners. In the fall of 2014 he was named CEO of next-generation IPTV platform Philo. McCollum was one of the startup's first investors and mentors.
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