1998-present: Senior Researcher and Mathematical Modeller. Department of Public Health, Erasmus MC University Medical Center Rotterdam (Netherlands)
2001-2014: Senior Lecturer Computer Science, Institute for Communication, Media and Informatics, Rotterdam University, Rotterdam
2004-2008: Bioinformatician, Dept of Virology, Erasmus MC University Medical Center Rotterdam
1996-2001: IT Architect, ABN Amro Bank NV, Amsterdam
1995-1996: Associate Professor, Dept of Surgery, Medical Faculty, Erasmus University Rotterdam