In 2004, while attending college, D'Angelo created the website BuddyZoo, which allowed users to upload their
AIM buddy list in order to compare with those of other users. BuddyZoo also generated network graphs based on these lists. D'Angelo joined
Facebook shortly after its launch in 2004, and was its
chief technology officer (CTO) from 2006 to 2008, and vice president of engineering until 2008. In June 2009, D'Angelo co-founded
Quora with former Facebook software engineer, Charlie Cheever. In May 2012, he invested $20 million in Quora as part of the company's $50 million
Series B round of financing. D'Angelo was also an early investor in
Instagram before its 2012 acquisition by Facebook,
Asana, a work management platform, and
Lunchclub, a networking platform using
artificial intelligence. D'Angelo is the founder of an AI startup, Poe. Poe is currently integrated within Quora. D'Angelo was an early advisor to
Instagram prior to 2012.
OpenAI In 2018, he joined the board of directors of
OpenAI. When Altman returned to OpenAI, the other three board members involved in Altman's ouster resigned. D'Angelo was the only of the six original board members who remained following Altman's return. == Honors and achievements ==