I am a research director at CNRS, a senior researcher at the Max Planck Institute for Informatics, and a faculty member (Privatdozent) at Saarland University. In the past I was employed at the University of Cantabria and at the University of Passau. I worked as a visiting researcher at various instiutes including SRI International in Menlo Park, Zuse Institute Berlin, Fujitsu Laboratories Japan, Lomonosov Moscow State University, and Forschungszentrum Jülich. I am an editor at several scientific journals and regularly serve on committees of leading international conferences in computer science and mathematics.
My research spans the domains of exact and efficient computation, computer algebra, logic, and formal reasoning. Further interests include interdisciplinary research on the qualitative analysis of dynamic properties of reaction systems in chemistry and systems biology. I am a principal developer of the open-source computer algebra system Reduce including my computer logic system Redlog, which has so far received 350+ citations for applications to scientific problems.