David Heinemeier Hansson

David Heinemeier Hansson, known as DHH, is a Danish programmer and writer best known for creating Ruby on Rails, a web framework written in Ruby. He is also a partner and chief technology officer at the web-based software development firm 37signals, and he co-wrote Agile Web Development with Rails with Dave Thomas in 2005. With Jason Fried he also wrote Getting Real, Rework, Remote: Office Not Required, and It Doesn't Have to Be Crazy at Work.