09/2008 – Present: Professor Emeritus, National and Kapodistrian University of Athens
07/2017 – Present: IT Consultant
09/2014 – 06/2017: Professor of Computer Science, Neapolis University Pafos, Cyprus
09/2009 – 08/2013: Consultant to the Government of Cyprus, Department of Information Technology Services, on e-Governance issues (Government Gateway, Electronic Identification / eID, and Data Warehousing & Data Mining)
09/2009 – 06/2012: Adjunct Academic Staff, Open University of Cyprus
09/2007 – 08/2009: Visiting Professor, University of Cyprus and Open University of Cyprus
09/1988 – 08/2008: Professor of Computer Science, Department of Informatics and Telecommunications, National and Kapodistrian University of Athens
1988 – 1993: Director, Institute of Informatics and Telecommunications, NCSR "Demokritos"
1981 – 1988: Full Professor of Computer Science, Department of Physics, Aristotle University of Thessaloniki
1985 – 1987 & 1978 – 1979: Visiting Scientist / Research Associate, IT Department, CERN, Geneva, Switzerland (on sabbatical leave)
1979 – 1981: Director, Computer Center, NCSR "Demokritos"
1971 – 1979: Researcher, Computer Center, NCSR "Demokritos"
Academic and Administrative Positions Held
Dean, Faculty of Science, Aristotle University of Thessaloniki
Department Chair, National and Kapodistrian University of Athens and University of Peloponnese
Member of the Senate, National and Kapodistrian University of Athens and Aristotle University of Thessaloniki
Director of Research Institute, NCSR "Demokritos"
Head of Division, National and Kapodistrian University of Athens
Chair and Member of numerous academic councils and committees
Director, Computer Center, National and Kapodistrian University of Athens
