2019- Until now worked as Professor, University of Tabuk, Saudi Arabia
2019 Promoted to full Professor, Faculty of Science, Ibb University, Yemen
2015- 2018 worked as Vice Dean for Student Affair, Faculty of Science, Ibb University
2014- 2015 worked as Vice Dean for Higher Studies & Scientific Research, Faculty of Science, Ibb University
2012- 2019 worked as Associate Professor, Faculty of Science, Ibb University, Yemen
2009- 2012 worked as Chief Financial Officer of the Union of Faculty Members
2009-2011 worked as Head of Biology Department, Ibb University, Yemen
2007- 2012 worked as Assistant Professor, Faculty of Science, Ibb University, Yemen
2000-2003 worked as Assistant lecturer, Faculty of Science, Jordan University, Jordan
1998-2000 worked as Assistant lecturer, Ibb University, Yemen
1993-1998 worked as Teacher of Biology, Ministry of Education, Yemen