Since 1974 I have worked as a DBA or IT Consultant with the following clients:
| BMW Group | Munich, Germany |
| RBS
Royal Bank of |
Edinburgh, Scotland |
| T-Systems GEI GmbH | Mülheim/Ruhr, Germany |
| AXA Colonia Versicherung | Cologne, Germany |
| Deutsche Telekom DeTeCSM | Krefeld, Germany |
| Deutsche Telekom DeTeCSM | Kiel, Germany |
| Landeszentralbank | Düsseldorf, Germany |
| Deutsche Telekom DeTeCSM | Bielefeld, Germany |
| Deutsche Telekom | Neuss, Berlin, Euskirchen, Germany |
| IBM | Neuss and Bonn, Germany |
| Victoria Versicherung | Düsseldorf, Germany |
| Landesbank | Munich, Germany |
| Hypo Bank | Munich, Germany |
| BMW | Munich, Germany |
| General Foods | White Plains, New York |
| Anglo American Gold Mining | Welkom, South Africa |
| Telenorma | Frankfurt, Germany |
last update 13.10.07