Officer in Charge, Director, North African Ministers' Council On Water (N-AMCOW) Technical Secretariat.  2002- Present

Regional Water Resources Management Program Manager, CEDARE, (2005-Present)

Senior Water Resources Specialist, CEDARE, (2002-2005)

Senior Project Manager, Water Resources Planning, Camp Dresser & McKee, California, USA (2000-2002)

Project Manager, Water Resources & Environmental Planning, Tetra Tech Infrastructure Southwest Group, California, USA (1999-2000)

Part Time Lecturer, University of California, Irvine, USA, (2000).

Senior Water Resources Specialist, Center for Environment & Development for the Arab Region & Europe - CEDARE (An International Non-for-Profit Organization partially funded by the United Nations Development Program (UNDP)), (1995- 1999)

Regional Coordinator, Programme for the Development of a Regional Strategy for the Utilization of the Nubian Sandstone Aquifer System, CEDARE, (1998)

Faculty Affiliate, Colorado State University, USA, (1997-Present).

Part-time consultant to IPTRID/World Bank (1996).

Part-time consultant to the UNESCO Regional Office/Hydrology & Environment Program, (1995).

Senior Researcher, Strategic Research Unit, National Water Research Center, Egypt, (1994-1995).

Consultant, Saleh & Associates consulting firm, Cairo, Egypt, (1994-1995).

Ph.D. Candidate, Colorado State University, USA, (1991-1994).

Civil Engineer Researcher, Water Distribution & Irrigation Systems Research Institute (WDISRI), NWRC, Egypt (1991).

M.Sc. Candidate, Colorado State University, USA, (1989-1990).

Civil Engineer Research Assistant, WDISRI, NWRC, Egypt (1987-1990).

Part-time Civil Engineer, Talaat Engineering Consulting Office, Egypt (1987-1988).

Civil Engineer, Drainage Authority, Ministry of Public Works and Water Resources, Egypt (1987).

Hydrologist Assistant, Salt River Project, Phoenix, Arizona, USA, (summer 1986).

Hydraulics Lab Assistant, Engineering Research Center, Colorado State University, Fort Collins, Colorado, USA, (Summers 1983-1985).