Celtic Tigers

The two mild-mannered Irish prodigies behind Stripe are upending the brutal market for online payments—with Amazon at their side.

- Ashlee Vance

Every day, Americans spend about $1.2 billion online. That figure has roughly doubled in the past five years, according to the Department of Commerce, and it’s likely to double again in the next five as the internet continues to devour traditional retail. So it might come as a surprise that the web’s financial infrastructure is old and slow. For years, the explosive growth of e-commerce has outpaced the underlying technology; companies wanting to set up shop have had to go to a bank, a payment processor, and “gateways” that handle connections between the two. This takes weeks, lots of people, and fee after fee. Much of the software that processes the trans actions is decades old, and the more modern bits are written by banks, credit card companies, and financial middlemen, none of whom are exactly winning hackathons for elegant coding.

In 2010, Patrick and John Collison, brothers from rural Ireland, began to debug this process. Their company, Stripe Inc., built software that businesses could plug into websites and apps to instantly connect with credit card and banking systems and receive payments. The product was a hit with Silicon Valley startups. Businesses such as Lyft, Facebook, DoorDash, and thousands that aspired to be like them turned Stripe into the financial backbone of their operations.

The company now handles tens of billions of dollars in internet transactions annually, making money by charging a small fee on each one. Half of Americans who bought something online in the past year did so, probably unknowingly, via Stripe. This has given it a $9.2 billion valuation, several times that of its nearest rivals, and made Patrick, 28, and John, 26, two of the world’s youngest billionaires.