Dec 2000 - until now. Department of Plant Physiology, Warsaw University of Life Sciences, SGGW
Assistant Professor, Researcher (permanent position).
Lecture providing and conduct research to study the effects of environmental changes on plant growth (plant gas exchange and chlorophyll fluorescence).

Sep - Dec 2001. Institute of Plant Sciences, Bern University – Switzerland
Guest Researcher
Research related to plant gas exchange and chlorophyll fluorescence.

Jul - Sep1999. Forest Research Institute, Ministry of Agriculture
Consultant and expert
Plant Physiologist (forest tress gas exchange measurement)

Feb 1997 - May 1999. Department of Plant Physiology, Warsaw Agricultural University SGGW
Scientific cooperation (various temporary contracts) as expert

Feb 1996 - Jan 1997. Department of Plant Physiology, Warsaw Agricultural University SGGW
Assistant Professor. Lecture providing (plant physiology). Conduct research to study the effects of salinity, chilling and drought on plant growth. Control some molecular biology techniques.

Jan - Dec 1995. Department of Plant Physiology, Warsaw Agricultural University SGGW
Assistant Professor
Lecture providing, realizing research on stress physiology, alternative plants, gas exchange and plant growth and source- sink relationship study.

Oct 1993 - Aug 1994. Department of Plant Physiology, Warsaw Agricultural University SGGW
Technical Expert
Photosynthesis measurement improvement. Analysis of the tendencies of the worldwide research related to plant stress physiology. Supervision on the scientific apparatus used by the students through field experiments execution.

Dec 1985 - Jun 1993. Faculty of Agricultural, Aleppo University – Syria
College Teacher, Ph.D. Student.
Exercises providing of plant physiology. Delegated to Poland: to obtain Ph.D. Degree in Agricultural Sciences.