Ryan Graves found Uber in 2010, when it was still called UberCab, because he responded to a tweet written by now-CEO Travis Kalanick.
"Looking for a business development & product badass," the tweet said.
"Here’s a tip," Graves responded, tweeting back his gmail address.
Graves had spent two years at General Electric Healthcare, spending nights and weekends on a startup of his own that never got off the ground. He later spent three months as an unpaid "pseudo intern" working alongside Foursquare’s business development lead, Tristan Walker, but Foursquare declined to offer him a permanent position.
Graves helped Uber launch in June 2010. Shortly after, he was named the startup's first CEO. In December 2010, Kalanick took over for Graves as CEO.
Graves is still at Uber. He's on the board director and head of global operations.