March 1995 – Oct 1997:
MSc Student, South Valley University, Egypt.
Nov 1997 – May 2001:
PhD Student, South Valley University, Egypt.
July 2001 – Oct 2003:
Assistant Professor South Valley University, Egypt.
Nov 2003 – Oct 2005:
Research Fellow of Alexander von Humboldt Foundation (AvH), Institute of Thermodynamic and Heat Technology (ITW), Stuttgart University, Germany.
Nov 2005 – Oct 2007:
Associate Professor, South Valley University, Egypt.
Nov 2007 – Sep 2009:
Research Fellow of JSPS, Mechanical Engineering Department, Kyushu University, Japan.
Oct 2009 – Jun 2015:
Research Scientist, King Abdullah University of Science and Technology (KAUST), KSA.
Jan 2016 – Present:
Professor and Researcher, Effat University, KSA.