1976-1977                  Assistant Inspector, Department of Horticulture, Ministry of Agriculture,Khartoum, Sudan.

 

1977-1978                  Teaching Assistant and Part-time Lecturer,Department of Horticulture, College of Agricultural Studies, Sudan University of Science and Technology. Khartoum,Sudan.

 

1978-1980        Teaching Assistant, Department of Horticulture,Faculty of Agriculture,of Khartoum, Sudan.

 

1983-1985        Teaching Assistant, Department of Botany AndPlant Sciences, Universityof California, Riverside, CA, USA.

 

1985-1986        Research Assistant, Department of Botany and Plant Sciences, University ofCalifornia, Riverside, CA, USA.

 

1986-1996        Assistant Professor, Faculty of Agriculture, University of Khartoum,  Sudan.

 

1996-2011        Associate Professor, Faculty of Agriculture, University of Khartoum, Sudan.

 

2011-2011            Professor, Faculty of Agriculture, University of Khartoum, Sudan

 

2011-Jun 2014     Professor, Faculty of Sciences and Arts, at Khulais, King Abdul Aziz University, Saudi Arabia

 

2014-present         Professor, Faculty of Agriculture, University of Khartoum, Sudan.