| 2011-present | Initiator and Chairman, national Committee for Mathematical Modeling, Simulation and Optimization (KoMSO) at the Federal Ministry of Education and Science |
| 2011-present | Vice Scientific Director, Heidelberg Graduate School of Mathematical and Computational Methods for the Sciences |
| 2008-present | Chairman, Program Panel "Neue Mathematik für Innovationen in Industrie und Dienstleistungen" of the Federal Ministry of Education and Research (BMBF) |
| 2007-present | Vice-President, Administrative Council, Cambodian Mathematical Society |
| 2007-present | Consultant, Ministry of Education, Youth and Sport, Cambodia |
| 2007-2011 | Initiator and Founding Director, Heidelberg Graduate School of Mathematical and Computational Methods for the Sciences |
| 2005-present | Managing Director of the IWR |
| 2002-present | CDC-EMS ''Committee for Developing Countries'' of the European Mathematical Society (member responsible for Asia) |
| 2001-present | Chairman, International PhD Research Training Program ''Complex Processes: Modeling, Simulation and Optimization'', Heidelberg-Warsaw |
| 1999-present | Head, Technology Transfer Center ''Simulation and Optimization'', Heidelberg |
| 1995-2006 | Chairman, "Association for Mathematics in Industry and Research" |
| 1994-2000 | Co-Initiator and Project Leader, National Collaborative Research Program (SPP) "Real-Time Optimization of Large Systems" |
| 1993-2001 | Chairman, PhD Research Training Program "Modeling and Scientific Computing in Mathematics and the Sciences", Heidelberg |
| 1993-2004 | Vice Managing Director of IWR |
| 1991-2004 | Co-Initiator and Project Leader, Collaborative Research Center "Reactive Flow, Diffusion and Transport" (SFB 359), Heidelberg |
| 1991-present | Full Professor (C4) at the IWR, University of Heidelberg |
| 1988-1991 | Full Professor (C3) for Applied Mathematics, University of Augsburg |
| 1987-1988 | Visiting Professor for Numerical Mathematics, University of Heidelberg |
| 1986 | Ph.D. in Applied Mathematics, University of Bonn |
| 1985-1987 | Researcher, SFB 256 "Nonlinear Partial Differential Equations", Bonn |
| 1982-1985 | Mathematical Consultant for Industry, Commerce and Research Institutions |
| 1981-1982 | Researcher, German Aerospace Establishment (DLR), Oberpfaffenhofen |
