· Affiliate Faculty, National Center for Supercomputing Applications2014–
· Professor, University of Illinois at Urbana-Champaign2014–
· Professor, University of California, Davis2009–2014
· Associate Professor, University of California, Davis2004–2009
· Research Scientist, UC San Diego2000–2004
· Visiting Project Scientist, San Diego Supercomputer Center1998–2000
· Dr.rer.nat (PhD), Albert-Ludwigs-Universität Freiburg im Breisgau1993–1998
· Research Scientist, The University of Freiburg1993–1998
· Dipl.-Inform. (MSc), Universität Karlsruhe (TH)1986–1992