CTO & Co-Founder at Travis CI
As maintainer of Sinatra, Konstantin Haase is an Open Source developer by heart. Ruby has become his language of choice since 2005. He regularly contributes to different widespread projects, including Rubinius, Rack, Rails and MRI. In 2012, he received the Ruby Hero Award for his outstanding contributions to the community. He now works on Open Source projects at Travis CI in Berlin, Germany.