| 2009 – |
Guest Professor, National Institute of Informatics Tokyo (Japan) |
| 2007 – |
Full Professor and Chair of Experimental Physics, Atominstitut der Österreichischen Universitäten, TU Wien (Austria) |
| 2003 - 2006 |
Guest Professor Peking University, Beijing (China) |
| 2000 – 2006 |
Full Professor and Chair of Experimental Physics, Institute for Experimental Physics, Heidelberg University (Germany) |
| 1997 – 2000 |
Außerordentlicher Professor (Ao Prof)(with tenure), University of Innsbruck (Austria) |
| 1993 – 1997 |
Assistant, Institute for Experimental Physics, University of Innsbruck (Austria) |
| 1992 – 1995 |
Postdoctoral Researcher & Visiting Scientist, MIT, Cambridge MA (USA) |
| 1990 – 1991 |
Postdoctoral Researcher, Harvard University, Cambridge MA (USA) |
| 1985 – 1990 |
Assistant, Institute for Nuclear Physics, TU Wien, Vienna (Austria) |
| 1983 – 1984 |
Researcher, EHS Experiment CERN, Geneva (Switzerland |