Sep 2020- now        dean

                                 faculty of graduate Studies  and environmental Research, Ain Shams University

Aug  2020- sep 2020      Vice dean of environmental communities

                                      Institute of Environmental Studies  and Research,

                                       Ain Shams University

Jul  2014- Aug 2019  Head of Environmental Engineering Department,

                                     Institute of Environmental Studies  and Research,

                                    Ain Shams University

Dec 2013- now          Environmental Hydraulics Professor

                                     Environmental Engineering Department,

                                   Institute of Environmental Studies  and Research,

                                   Ain Shams University

Sep 2008 - Sep 2013      Associate Professor

                                                               Environmental Engineering Department,                                                                                                        

                                           Institute of Environmental Studies  and Research,

                                                          Ain Shams University

June 2002 – Sep 2008     Lecturer

                                           Environmental Engineering Department,

                                                           Institute of Environmental Studies  and    Research,

                                            Ain Shams University

July 1999 – June 2002    Assistant Lecturer

                                           Engineering Department, Institute of Environmental Studies

                                           and Research, Ain Shams University.

Sep 95 – July 1999          Instructor 

                                           Engineering Department, Institute of Environmental Studies

                                           and Research, Ain Shams University.

Sep 1993- Sep  1995       Software Programmer

                                           Responsible for Developing Applications Using Informix                                                

                                           Database under Unix Operating System.