The culture of Basecamp, the small company behind top-shelf project management software, is famously productive and unfrazzled. David Heinemeier Hansson, aka DHH, is the developer behind Basecamp’s eponymous flagship product. He’s also the creator of Ruby on Rails, the framework underlying sites like Hulu, Airbnb, GitHub, and early versions of Twitter. In his off hours, he’s an international race car driver. We asked him how he works.