since 2001:
VDA–Auditor, IATF–Auditor for the standards VDA 6.1 and ISO TS 16949

1997-2003:
Freelancer of Peguform Group, Automotive industry 

since 1994:
Self employed as consulting engineer for management systems and business organization
External auditor for DQS for the standards ISO 9001, ISO 14001, ISO 22000, IFS, BRC, ISO TS 16949, VDA 6.1
Lecturer at the Fulda Fachhochschule (college) for Management systems
Lecturer with the rural adult education program in Lower Saxony e.V. (LEB) for Management systems
Lecturer at the DGQ

1992-1994:
Lady Cake Feine Kuchen GmbH, Duingen
General Manager industrial production of baked goods 

1991-1992:
Pickenpack Tiefkühlgesellschaft, Lüneburg
Plant Manager Production of frozen fish products

1990-1991:
Van Houten Industries GmbH, Berlin
Technical Manager cocoa production industry

1981-1990:
Jacobs Suchard Manufacturing GmbH, Bremen
Project engineer, Production Manager

1978-1981:
Unilever group: "Nordsee" Deutsche Hochseefischerei GmbH, Bremerhaven
Project engineer

1975-1978:
Mechanical engineering degree at the Technical College, Bremen
Main focus: manufacturing and standardization technology
Degree as academically qualified engineer