1.Teaching Assistant, Department of Botany and Agricultural Biotechnology, Faculty of Agriculture, University of Khartoum, 1972 -1976.

2.Senior Scholar, Department of Botany and Agricultural Biotechnology, Faculty of Agriculture, University of Khartoum, 1976 -1980 (scholarship to study for Ph.D. at the University of Liverpool,  U.K.).

3.Assistant Professor, Department of Botany and Agricultural Biotechnology, Faculty of Agriculture, University of Khartoum, 1980 -1993.

4.Associate Professor, Department of Botany and Agricultural Biotechnology, Faculty of Agriculture, University of Khartoum, 1993.

5.Professor, Juy, 2004.