1. October, 1995 – September, 2003, teaching assistant at Department of Biochemistry, Faculty of Veterinary Medicine, University of Khartoum, Sudan.

2. October, 2003- May, 2005, in a pre PhD study period as a guest student at Institute of Environmental Medicine, Karolinska Institute, Sweden.

3. June, 2005- till now, a PhD student at Institute of Environmental Medicine, Karolinska Institute, Sweden.

4. 2007- till now, Lecturer at Department of Biochemistry, Faculty of Veterinary Medicine, University of Khartoum, Sudan