Graham is one of the most prominent computer programmers/tech investors in the world. He earned his master’s (1988) and doctorate (1990) in philosophy at Harvard.
In 1995, he founded Viaweb, the first software as a service company that allows you to build online stores, and sold it to Yahoo in 1998 for roughly $49 million.
He went on to start Y Combinator in 2005, which has become one of the earliest and biggest startup incubators in the world. So far, Y Combinator has invested in more than 450 startups, including Dropbox, Airbnb, Stripe, and Justin.tv (which later became Twitch).