Stefan Roock studied computer science in Hamburg. He lives in a small town near Hamburg and works mainly in Germany. Since 1999 he has participanted in dozens of projects as a developer, coach, consultant and trainer. Has has in-depth experiences with Scrum, eXtreme Programming, Feature-Driven-Development und Crystal. He approaches new projects with a "methodology per project" mindset and combines practices from several methods for the situation at hand.

Stefan wrote books about eXtreme Programming and Refactoring and speaks regularly at conferences about agile topics. He is certified in Scrum (Certified Scrum Trainer), FDD and the german V-Modell XT. 

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