- 1918-2019
class coordinator in integrated medical education, faculty of medicine-zagazig university-academic departments, الزقازيق, مصــــــــر
- 1989-1990
• House officer , zagazig university hospitals, الزقازيق, مصــــــــر
- 1990-1993
• Demonstrator of Microbiology and Immunology , microbiology and immunology department-faculty of medicine-zagazig university, الزقازيق, مصــــــــر
- 1993-1997
• Assistant Lecturer of medical Microbiology and Immunology , Medical Microbiology and Immunology Department, Faculty of Medicine, Zagazig University, Zagazig, الزقازيق, مصــــــــر
- 1997-2002
• Lecturer of medical Microbiology and Immunology , Medical Microbiology and Immunology Department, Faculty of Medicine, Zagazig University, الزقازيق, مصــــــــر
- 2002-2007
• Assistant professor and consultant in medical microbiology and immunology , medical microbiology and immunology in Faculty of medicine, Zagazig University, الزقازيق, مصــــــــر
- 2005-2006
• Assistant professor and consultant in medical microbiology and immunology , DUBAI MEDICAL COLLEGE for girls, دبي, الامـــارات
- 2007-2017
• Consultant in immunology unit in medical microbiology and immunology department, allergy unit in medical microbiology and immunology department , faculty of medicine zagazig university , الزقازيق, مصــــــــر
- 2007-2019
Member of the Standing Committee of Medical Microbiology and Immunology for the promotion of faculty members to the degree of professor and assistant professor, ministry of higher education, القاهرة, مصــــــــر
- 2007-2019
• Consultant in infection control unit , Medical Microbiology and Immunology Department, Faculty of Medicine, Zagazig University, الزقازيق, مصــــــــر
- 2007-2019
• professor and consultant in medical microbiology and immunology in, Medical Microbiology and Immunology Department, Faculty of Medicine, Zagazig University, الزقازيق, مصــــــــر
- 2017-2019
• HEAD of medical microbiology and immunology department,faculty of medicine ,zagazig university, Medical Microbiology and Immunology Department, Faculty of Medicine, Zagazig University, الزقازيق, مصــــــــر
- 2018-2019
professor in medical microbiology and immunology, faculty of dentistry-zagazig university, الزقازيق, مصــــــــر