It all started when Kevin Systrom was working at Nextstop, in marketing. That’s right, marketing! He had neither a formal engineering degree nor any programming skills. He started doing mash-up projects in the evenings and learnt programming in the nights. Pretty soon, his determination and will made him program a mash-up of foursquare and mafia-wars that he called “Burbn”. Burbn is the pre-cursor of today’s Instagram.