| 2008 – | Head of the Division of Physics and Technology of Wide-Band-Gap Semiconductor Nanostructures, Institute of Physics, Polish Academy of Sciences, Warsaw, Poland |
| 2007 – | Profesor, Physics Department, Kazimierz Wielki University, Bydgoszcz, Poland |
| 2004 – 2004 | Research Director of the Institute of Physics, Polish Academy of Sciences, Warsaw, Poland |
| 2002 – | Professor, Institute of Physics, Polish Academy of Sciences |
| 1992 – 2001 | Associate Professor (Docent), Institute of Physics, Polish Academy of Sciences |
| 1994 – 1997 | Research Director, Institute of Physics, Polish Academy of Sciences, Warsaw, Poland |
| 1989 – | Head of the Laboratory of Optical Spectroscopy, Institute of Physics, Polish Academy of Sciences, Division of Spectroscopy of Semiconductors |
| 1987 – 1992 | Research Associate, Institute of Physics, Polish Academy of Sciences |
| 1985 – 1987 | Postdoctoral Research Associate Laser Spectroscopy Facility Oklahoma State University Stillwater, Oklahoma, USA |
| 1979 – 1985 | Research Assistant, Institute of Physics, Polish Academy of Sciences |
| 1978 – 1979 | Research Assistant, Institute of Electron Technology, Warsaw, Poland |