| 1974-1980 | Assistant Professor, Institute of Nuclear Physics and Techniques, AGH |
| 1976-1977 | Institute of Atomic Physics, Bucharest, Romania, Polish Fellowship |
| 1980-1994 | Associate Professor, Institute of Computer Science, AGH |
| 1981 | Joint Institute for Nuclear Research, Dubna, Russia, contract |
| 1981-1982 | Kernforschungsanlage Juelich (Germany), IAEA Fellowship |
| 1994-2001 | Professor, Department of Computer Science, AGH |
| 1994-2000 | Visiting Professor, Supercomputing Institute, University of Minnesota, 1 month visits |
| 2001-present | Full Professor, Department of Computer Science AGH |
| 1993-present | Professor, Academic Computer Centre CYFRONET AGH |
| 2000-2014 | Professor, School of Banking and Management in Cracow |
| till present | Multiple short vistis in different European and US
scientific centres |
| Editor-in-Chief: | Computer Science (Sci. Bull. of AGH) (since 1999) (IF/2024=0,6) |
| Editorial Board: | Computing and Informatics Journal (since 2004) |
| Associate Editor: | Computing and Informatics Journal (since 2007)
(IF/2024=1,7) |
| Reviewer: | Computing and Informatics
Journal, Computer Assisted Mechanics and Engineering Sciences,
Euromicro J.Systems Architecture, Theoretical and Applied Informatics,
Future Generation Computer Systems, Archives of Mechanics, Theoretical
and Applied Informatics, Concurrency and Computation, IEEE
Transactions on Knowledge and Data Engineering, Journal of Cluster
Computing, Scientific Programming |