- Research Associate Professor, Center for Sustainable Development, College of Arts and Sciences, Qatar University, Qatar (2022 to Current)
- Assistant Professor, Department of Chemistry and Earth Sciences, College of Arts and Sciences, Qatar University, Qatar (2018 to 2021)
- Associate Professor, Department of Chemistry, Faculty of Science, Cairo University, Egypt (2016-2021)
- Senior researcher, Gas Processing Center, College of Engineering, Qatar University, Qatar (2012 to 2017)
- Assistant Professor, Department of Chemistry, Faculty of Science, Cairo University, Egypt (2007 to 2016)
- Postdoctoral research associate, Texas A&M University at Qatar (2010 to 2012)
- Postdoctoral research associate, Free University of Berlin, Germany (2006 to 2007)
- Ph.D. candidate, Free University of Berlin, Germany, funded by DFG (Deutsche Forschungs Gemeinschaft) (2002 to 2006)
- Teaching Assistant, Free University of Berlin, Germany (2001 to 2005)
- Lecturer Assistant, Department of Chemistry, Faculty of Science, Cairo University, Egypt (2001)
- Demonstrator, Department of Chemistry, Faculty of Science, Cairo University, Egypt (1995 to 2000)