John founded Stripe, a payments processing company that powers in-app purchases. In November, his company was valued at US$9.2 billion.
John took up coding with his brother as a kid. He sold his first company at the age of 15 for US$5 million in 2008.
When not building billion-dollar companies, Collison likes flying airplanes above California.
"A lot of people learn to code messing around with things. For me, it started up as a hobby and a plaything, and I became more curious over time" – John Collison.
(Source: CEO Middle East YouTube channel)