The 27-year-old co-founded Stripe.
John Collison. (Photo: Youtube)
Irish entrepreneur John Collison is the world's self-made billionare, according to Forbes.
He is one of four self-made billionaires in their 20s.
The 27-year-old co-founded with his brother Patrick San Francisco-based Stripe, a software platform that enables online payments.
John is just two months younger than Snapchat's Evan Spiegel, The Irish Times reported.
At just 17-years-old, John founded an online auction-management system called Shuppa in 2007. He later sold it in 2008 for $5 million reportedly.
Collison also studied physics at Harvard University before launching Shuppa .
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