Klaas is working as a Data Scientist & Big Data Evangelist with The unbelievable Machine Company GmbH. He is father of the Data Science Day (DSDay), coordinator of the Big Data Week 2013 Berlin, member of the program committee O'Reilly Strata London, member of the program committee "Best in Big Data" by IDG, author & speaker.

Before that he worked as a freelance Creative Consultant, Scrum master & Manager (2 years), as Director User Experience @ Pixelpark (3 years), as the Head of Online @ Native Instruments (interlude) and as a Senior IT Project Manager @ Pixelpark (6 years).
Side Projects include:
Lecturer @ several universities (in Berlin, Cologne, Siegen) on Agile Project Management, Creative Leadership & Social Data.
Klaas is interested in punk music, brilliant ideas, world travels