Head of Intelligent and Distributed Systems Department (Cologne, Berlin) and Head of Secure Software Engineering Group (Jena) at German Aerospace Center (DLR). Research fields include reproducible and open data science, distributed systems, provenance, machine learning, information visualization, and software analytics. Co-founder of Medando, a startup that develops mobile apps for personalized medicine and self-tracking (Quantified Self). Co-Founder of Quantified Self Meetup Cologne. Chair of PyHPC and PyData Cologne. ♥ Python and my dog Baldo.