| 06.78-10.88 | assistant, Technical University of Gdansk |
| 11.88-09.90 | assistant professor, Technical University of Gdansk |
| 10.90-12.1999 | assistant professor, University of Gdansk |
| 01.2000-09.2006 | associate professor, University of Gdansk |
| 10.2006- | professor, University of Gdansk |
| 01.09.99-31.08.02 | deputy chairman in the Institute of Mathematics, University of Gdansk |
| 01.09.02-31.08.08 | chairman in the Institute of Mathematics, University of Gdansk |
| 01.09.2012-31.08.2016 | chairman in the Institute of Mathematics, University of Gdansk |