• President and CEO of the Hasso-Plattner-Institut für Softwaresystemtechnik GmbH at the University of Potsdam (since 2004)
• Archiv:
  • Founding Director of the Institut für Telematik e.V. in Trier (1998 - 2002)
  • Vice-Director of the ITWM - Fraunhofer-Institut für Techno- und Wirtschaftsmathematik (1996 -1997)

Program Director

• Program co-director of the HPI-Stanford Design Thinking Research Program (since 2008)

• Chairman of the Steering Committee of the HPI Future SOC Lab (since 2010)
• Chairman of the Special Interest Group "IPv6" of AG 2 "Digitale Infrastrukturen" of the national German IT-summit (since 2011)
• Chairman of the German IPv6 Council (since 2007)
• Chairman of the Advisory Board of SAP Research, South Africa (since 2008)
• Archiv: Chairman of
• Fachgruppe Komplexität of the Gesellschaft für Informatik e.V. (1992 - 2007)
• WEP - Zentrum für Wissenschaftliches Elektronisches Publizieren at the University of Trier (1996 - 2004)
• Inititative der Service- und Softwareanbieter Rheinland-Pfalz (1999 - 2001)

recently e.g.

• Trust Management Symposium - 22./23. March 2012, HPI Potsdam
• German IPv6-Summit 2011 - 1./2. December 2011, HPI Potsdam
• Cloud-based High Performance Computing - Sino-German Workshop, 26. September - 1. October 2011, Shanghai, China
• SOA-Security Symposium, 28./29. Oktober 2010, HPI, Potsdam
• 5. tele-TASK Symposium - 15.-19. September 2010, TU Beijing, China
• German IPv6-Summit 2010 - 24./25. June 2010, HPI Potsdam
• 4. tele-TASK Symposium - 25./26. Februar 2010, HPI Potsdam
• Potsdamer Wissenschaftsforum - 19. November 2009, HPI Potsdam
• Informatik-Impulse - 18. November 2009, HPI Potsdam
• German IPv6-Summit 2009 - 14./15. Mai 2009, HPI Potsdam
• German IPv6-Summit 2008 - 7./8. Mai 2008, HPI Potsdam