• 2017 – 2019     Head of the Mathematics and Computer Science Department, The Open University of Israel
• 2011 -  Full Professor, The Open University of Israel
• 2011 - 2013      Head of the Graduate M.Sc. Program of the Computer Science Division, The Open University of Israel
• 2004 - 2006      Head of the Computer Science Division, The Open University of Israel
• 2006                  Associate Professor, The Open University of Israel
• 2004                  Senior Lecturer, The Open University of Israel
• 2000                  Lecturer, The Open University of Israel
• 1998 - 2000      Post-doctoral Fellow, Max-Planck-Institute fur Informatik, Saarbrucken, Germany
• 1997 - 1998      Post-doctoral Fellow, Dept. of Combinatorics and Optimization, University of Waterloo, Canada.