1. Teaching Assistant, Department of Mathematics, Faculty of Science, University of Khartoum, 1967-1973.
  2. Senior Research Scholar, Department of Mathematics, Faculty of Science, University of Khartoum, 1973-1977.
  3. Leturer in Applied Mathematics, Department of Mathematics, Faculty of Science, University of Khartoum, 1977-1984.
  4. Associate Professor of Applied Mathematics, School of Mathematical Sciences, University of Khartoum, 1984-present.
  5. Associate Professor of Applied Mathematics, Department of Mathematis, Faculty of Science, King Khaled University, Suadi Arabia, 1996-present.
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