Philips Semiconductors, Hamburg
- Development engineer for bipolar mixed circuits from 1983 to 1986.
NEC Electronics, Düsseldorf
- Product Marketing engineer for ASIC products from 1986 to 1989
- Assistant Manager in ASIC Application from 1989 to 1993
- Manager ASIC CAD from 1993 to 1998
- General Manager European Technology Centre since 1999
- General Manager Engineering Group from 2006 to 2010
Renesas Electronics, Düsseldorf
- General Manager Engineering Group since 2010
Advisory functions as non-executive Director in the board of:
- AmmoCore Inc. 2000 to 2003
- Athena Design Systems Inc. 2003 to 2007
- Vivante Inc. 2007 to 2009