1\ 1981-1982: Fifth year honour student (Training in teaching general Zoology practical for preliminary year students).

2\ 1983-1984: Teaching assistant.

3\ 1984-1992: Senior Teaching Assistance.

4\ 1992-1994: Assistant Professor in Zoology (Department of Zoology, Faculty of Science, University of Khartoum).

5\ 1994-1996: Assistant Professor in Zoology (Department of Zoology, Faculty of Science, University of Sebha, Libya).

6\ 1996-1997: Assistant Professor in Zoology (Department of Zoology, Faculty of Science, University of Khartoum).

7\ 1997-2007: Assistant Professor in Zoology (Department of Science, Al-Hassa Teaching College, Kingdom of Saudi Arabia).

8\ 2007-2014: Assistant Professor in Zoology (Department of Zoology, Faculty of Science, University of Khartoum).