- schoubo reasoning (from 2010)
- BEA Systems 1999-2008 (Oracle from 2008)
- Digital Equipment Corporation (DEC) in Århus 1988-1999 (Compaq from 1998)
- Danish Land Development (Det Danske Hedeselskab) 1982-1988
- Regional EDP-Center at Aarhus University (RECAU) 1978-1982
- Part-time teacher in Data Processing (three classes) at Århus Købmandsskole 1980-1981
- Freelance jobs for Programmørpuljen at RECAU (typically statistical analysis for research projects) 1972-1984
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