Jan. 2013- Up to date: Professor of Geology, Univ of Khartoum and the International Univ. of Africa

1997- Jan. 2013 Associate Professor, Dept. of Geology, Univ. of Khartoum

1996-1997 : Assistant Professor, Univ. of Khartoum.

1992-1996: Associate Professor, Dept f Earth Science, Univ. of  Sebha, Libya.

1986- 1992: Assistant Professor, Dept. of Earth Science, Univ. of Sebha, Libya.

1978- 1986: Lecturer (Senior Lecturer) Dept. of Geology, Univ. of Khartoum

1967- 1973 Teaching Assistant, Dept of Geology, Univ. of Khartoum.