image credit: James Duncan Davidson/O'Reilly Media, Inc./Wikimedia Commons David Heinemeier Hansson was born on October 15, 1979 in Copenhagen, Denmark. He is the creator of Ruby on Rails, an open source web application framework for the Ruby programming language. Hansson is also a partner at 37signals. He was recognized in 2005 by Google and O'Reilly with the Hacker of the Year award for his creation of Ruby on Rails.