John Collison

We hired extremely slowly at the beginning. It took us a year to get to four people. It's hard to hire as a very small company, and we wanted to make sure we found people who cared a lot about what Stripe was doing.

One of the really fascinating areas is marketplaces that take advantage of mobile devices. Ridesharing is the obvious example, but that's just the start of it, of selling goods and services with lightweight mobile apps.

After decades spent in rewrite rooms surrounded by other shouting writers, I discovered that I work best alone. I like being in charge of my time, working out the problems according to my own rhythms and being able to nap. That's a big one, the napping on demand!