| 2019-present | Assistant Research Scientist, Department of Environmental Science and Technology, University of Maryland, USA. |
| 2016-2019 | Post-doctoral Associate, Department of Environmental Science and Technology, University of Maryland, USA. |
| 2015-2016 | Assistant Professor, Faculty of Agricultural Environmental Sciences, Arish University, Egypt. |
| 2015 | International Graduate Research Fellowship, Department of Environmental Science and Technology, University of Maryland, USA. |
| 2015 | Ph.D. Dissertation Fellow, College of Mechanical and Electrical Engineering, Northwest A&F University, China. |
| 2012-2015 | Research Assistant, College of Mechanical and Electrical Engineering, Northwest A&F University, China. |
| 2011-2012 | Assistant Lecturer, Faculty of Agricultural Environmental Sciences, Arish University, Egypt. |
| 2009-2011 | Research Scholar, College of Mechanical and Electrical Engineering, Northwest A&F University, China. |
| 2008-2009 | Assistant Lecturer, Faculty of Environmental Agricultural Sciences, Suez Canal University, Egypt. |
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