Data and Rocket Scientist at the German Aerospace Center (DLR). Head of the Department for Intelligent and Distributed Systems located in Berlin, Braunschweig, Bremen, and Cologne. Research fields include reproducible science, distributed computing, provenance, information visualization, software analytics, and software visualization. Open Source and Open Science advocate at DLR. Python user since 1991. Organizes events for Python, such as the workshop series Python for High-Performance and Scientific Computing (PyHPC) at the Supercomputing conferences. Loves coffee.