(Post held and duration)

1997 – 2001    : Appointed as a demonstrator of Microbiology, Department of Microbiology, Fac. V. Med.,CairoUniversity.

2001 – 2005     : Appointed as an Assistant Lecturer in Microbiology Department, Faculty of V. Medicine,CairoUniversity.

2005: Appointed as Lecturer of Microbiology and Biotechnology, Faculty of V.Medicine,CairoUniversity.

2008: Appointed as Assistant Prof. of Microbiology in Clinical Laboratory Technology Department, College of Applied Studies and Community Service ,KingSaudUniversity.

2010 : appointed as Associate Professor at Department of Microbiology,CairoUniversity.

Recently at 2012 appointed as Associate Professor atKingSaudUniversity