1. Nov. 1975-Nov. 1976       : House Officer, at Khartoum Teaching Hospital, Khartoum.
2. Nov. 1976 – Nov. 1978    : Medical Officer, at the Eye Teaching Hospital, Khartoum.
3. June 1980 – Dec. 1980   : Medical Officer, at the Children’s Emergency Hospital, Khartoum.
4. March 1983 – January 1991  : Researcher at the Immunology Unit, Institute of Tropical Medicine, Medical Research Council, Khartoum.
5. January 1991 – January 1995  : Assistant Professor, at the Department of Medical Microbiology & Parasitology, Faculty of Medicine, University of Khartoum.
6. February 1995- November 2004   : Associate Professor, Department of Medical Microbiology & Parasitology.
7.     December 2004   :  Professor, Department of Medical Microbiology & Parasitology.

   8.   July 2000 – August 2009 :   Dean, Faculty of Medical Laboratory Sciences,  Khartoum University.