

David Heinemeier Hansson, also known as DHH, is a Danish software engineer, programmer, writer, entrepreneur, and racing driver. He is the creator of 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.
Hansson co-wrote Agile Web Development with Rails with Dave Thomas in 2005 as part of The Facets of Ruby Series. He also co-wrote Getting Real, Rework, Remote, and It Doesn't Have to Be Crazy at Work with Jason Fried.
Programming career
In 1999, Hansson founded and built a Danish online gaming news website and community called Daily Rush, which he ran until 2001. After attracting the attention of Jason Fried by offering him help with PHP coding, Hansson was hired by Fried to build a web-based project management tool, which ultimately became 37signals' Basecamp software as a service product. To aid the development process, Hansson used the then-relatively obscure Ruby programming language to develop a custom web framework. He released the framework separately from the project management tool in 2004 as the open source project Ruby on Rails. In 2005, Hansson was recognized by Google and O'Reilly with the "Hacker of the Year" award for his creation of Ruby on Rails. After graduating from the Copenhagen Business School and receiving his bachelor's degree in Computer Science and Business Administration, Hansson moved from Denmark to Chicago, Illinois, U.S. in November 2005.
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