At a team day at eBay (Germany). While working there as a frontend dev, I had attended a "team day" which involved stunt driving, and was placed on a team with

At a team day at eBay (Germany). While working there as a frontend dev, I had attended a "team day" which involved stunt driving, and was placed on a team with this new frontend guy who had just started. He told me about his (at the time, free) image optimization API, which is known today as https://kraken.io https://kraken.io We became friends, having frequent discussions about how such a service could be monetized. Three weeks later, he offered me a 50% split. Shortly afterwards, we founded a company and started serious work on Kraken Image Optimizer, without ever looking back.