||Head of the Mass Spectrometry and General Analytical Services of the Department of Chemistry, University of Zurich
|2002 – 2014
||Head of the Mass Spectrometry Services of the Institute of Organic Chemistry, University of Zurich
||Independent consultant and witnessing analyst in doping investigations in relation with the "Fédération Equestre Internationale", the "Deutsche Reiterliche Vereinigung", and the "Swiss Equestrian Federation"
|1996 – 2002
||Scientific coworker, Inst. of Organic Chemistry, University of Zurich
|1990 – 1991
||Teacher in mathematics & physics, Kollegium Gambach, Fribourg