Senior Researcher at Polymer Physics, ETH Zürich, since 1997 Lecturer at the Institute of Theoretical Physics, Technical University Berlin, 2001-2005 Director Beowulf-Cluster ETH Zürich, since 1997 Editor-in-Chief international journal Applied Rheology, since 1998 Recipient of several scientific awards (Carl-Ramsauer, Kurt Ueberreiter, Rheology Prize), Member of several physical and rheological societies, Referee for National Science Foundations, and several publishers. Project leader in priority program 'Colloidal magnetic fluids' and several special research areas (Smoothed particle dynamics, elementary friction processes, anisotropic fluids, mesoscopically organized composites) of the German Research Foundation