| 1974 - 1980 | Study Computer Science / Mathematics at Dortmund University (D) |
| 1981 - 1986 | Ph.D. student at University of Osnabrück (D) |
| 14. 3. 1986 | Ph.D. in Computer Science / Software Engineering |
| 1986 - 1987 | Assistant Professor at Johannes Gutenberg-University Mainz (D) |
| 1987 - 1991 | Assistant Professor at TU Braunschweig (D), Computer Science / Information Systems |
| SomSem 1989 | Substitute Chair Applied Computer Science, University Koblenz-Landau (D) |
| 1991 - 1997 | Chair of Software Engineering and Information Systems at Leiden University (NL) |
| since 1997 | Chair of Database and Information Systems, University of Paderborn (D) |
| since 2005 | Chairman of the Board of Management of s-lab (Software Quality Lab), University of Paderborn |
| since 2005 | Scientific Director of CSD Research, Capgemini AG, Munich (D) |
| 2011 | Nomination as GI Fellow |
| since 2012 | Chairman of the Board of Management of C-LAB (University of Paderborn) (Cooperative Computing & Communication Laboratory); InnovationCenter of Atos IT Solutions and Services GmbH and University of Paderborn |
