1985 - 1991 Bulgarian Academy of Sciences
Director of the Research Centre for Educational Informatics (UNDP/UNESCO supported project). Co-coordinator of IEA Computers in Education Study and national IEA (International Association for Educational Achievement) GA representative. UNESCO- expert in introduction new information technologies in education and administration. Scientific Secretary of the International Program Children in the Information Age. IIASA Expert in Systems Analysis, Decision Support Models and Systems, and Computer Supported Co-operative Work Systems (International Institute for Applied Systems Analysis, Vienna).
1978 - 1985 Bulgarian Academy of Sciences National
Co-coordinator of IIASA International Project Computer Systems for Multicriteria Decision Making and Decision Support Models. Management and information systems Consultant in Profit and Non-Profit Organizations. Head of Research Laboratory for System Research and System Analysis of Social Organizations.
1969 - 1978 University of Economics, Sofia, Bulgaria
Head of research group Macro and Micro Simulation Models for Economy's Forecast and Development.
1965 - 1969 Research Institute of International Economics, Sofia, Bulgaria
Head of department Operation Research and System Analysis.