| Date | Institution | Position |
| 1998-2002 | Technical University of Białystok | Extraordinary Professor (since December 2001: Head of Information Systems and Computer Networks) |
| 1998-2002 | Institute of Computer Science, Polish Academy of Sciences | Associate Professor (since 1999: Secretary of the Scientific Council) |
| 1997 | Institute of System Research, Polish Academy of Sciences | habilitation entitled "Representation and Managing Uncertain Information within Dempster-Shafer Theory of Evidence" |
| 1984-1998 | Institute of Computer Science
Polish Academy of Sciences, Warsaw |
Assistant Professor |
| 1980-1984 | Institute of Management in Machine Industry, Warsaw | Assistant Professor; head of the Designing Assortment Structures Group
(since 1984: consultant; since 1998: member of the Scientific Counsel) |
| 1979-1980 | Technical School of Engineering, Radom | Assistant Professor |
| 1976-1979 | Technical University of Warsaw | Ph.D student
Ph.D thesis (in 1979) entitled "Mathematical Modeling of Multidimensional Systems under Uncertainty" |
| 1974-1979 | "Energomontaż-Pn" the firm developing power stations, Warsaw | Programmer and System Designer |
| 1974 | Technical Univeristy of Warsaw, Dept. of Electronics | M.S. thesis entitled "Stability conditions for a dynamical system with one degree of freedom" |