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2021 to Present | Lecturer, Fakultät Informatik,
Ostfalia Universiy of Applied Sciences, Wolfenbüttel, Germany.
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2011 - 2021 | Research Associate, eCult project at the
Ostfalia Universiy of Applied Sciences, Wolfenbüttel, Germany.
2016-2021: coordinator of the Ostfalia eCult project
and leader of the Ostfalia eLearning team.
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2002 - 2011 | Lecturer, School of Computing, 
Edinburgh Napier University, UK. 
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1996 - 2002 | Assistant Professor,
School of Library and Information Science, 
Indiana University Bloomington. Member of the IU Cognitive
Science Program Faculty. 2000-2002: Adjunct Faculty 
in the School of Informatics. 
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1993 - 1996 | research positions: 
Department of Economics and Computer Science, Fachhochschule Stralsund
(January/February 1995); Department of Computer and Information Science,
University of Arkansas at  Little Rock (April - August 1995, 
September 1994, September 1993); Center for
Interdisciplinary Technology Research, Technische Universität
Darmstadt  (April 1994 - December 1995).
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1989 - 1994 | Teaching Assistant:
March 1993 -   March 1994: Department of Mathematics, TH Darmstadt;
April 1989 - February 1991: Department of Mathematics, TU Braunschweig.
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