• 1 1 on Basecamp as their shared source of truth. Three of us built the first version. Jason Fried, Basecamp’s founder, led the design. His co-founder, David Heinemeier Hansson, programmed it (and created the well-known web framework Ruby on Rails as a by-product). At the time I was a web designer with a focus on usability and user interfaces. I executed Jason’s design direction for key features of the app and collaborated with him to fill in details of the concept.