Studied communication research and phonetics in Bonn [1980 - 1986]
Research and teaching activities at the Universities of Hamburg and Koblenz-Landau and the GMD in Sankt Augustin (now part of the »Fraunhofer-Gesellschaft«, FhG) [1986 - 1995].
Doctorate at the Department of Linguistics and Literature at the University of Duisburg 
Consultant for Usability Engineering in an IT company [1996 - 2002]
Freelance consultant [since 2002]
IREB Certified Professional for Requirements Engineering 
Member of the Deutsche Gesellschaft für Informatik (German Informatics Society) [since 1986]
Publication of a textbook on language and communication: "Grundlagen sprachlicher Kommunikation" (Fundamentals of linguistic communication), Fink Verlag 1995; UTB 1877; together with N. Lenke and H.-D. Lutz
Member of the DATech working group "Usability Engineering / Software Ergonomics" [1998 - 2002]. The "Usability Guideline" developed there is mandatory for accredited testing laboratories. (DATech: "Deutsche Akkreditierungsstelle Technik", meanwhile merged into the "Deutsche Akkreditierungsstelle GmbH" (german accreditation body) (DAkkS)) .