| Period | Job title and academic duties |
| 1st Sep 2019 – current | Acting Department Head Dept. of Biological and Environmental Sciences, College of Arts and Sciences, Qatar University). |
| 25 October 2020 | Professor (Dept. of Biological and Environmental Sciences, College of Arts and Sciences, Qatar University). |
| Sep 10 2014 – August 2019 | Graduate Program Coordinator: (M.Sc. Environmental Sciences; PhD Biological and Environmental Sciences) Dept. of Biological and Environmental Sciences, College of Arts and Sciences, Qatar University). |
| 1st Sep 2013 up to Oct 2020 | Associate professor (Dept. of Biological and Environmental Sciences, College of Arts and Sciences, Qatar University). Snice Fall 2013 and up to date, I amteaching the following courses: Undergraduate level BIOL 422, Environmental Management and conservation BIOL 102, Biology-2 BIOL 100, Introduction to Life Science BIOL 351, Plant Anatomy and Physiology Graduate level BIOL 501, Earth systems (M.Sc. students) BIOL 523, Biological Conservation and Biodiversity in Qatar BIOL 616, Biodiversity (PhD students) BIOL 602, Lab Rotation I BIOL 603 Lab Rotation II. Supervision of 23 Capstone projects Supervision of (15 M.Sc., 3 PhD and 2 ongoing PhD Theses) |
| Nov 25th 2012 – Up to Date. (unpaid vacation) | Associate professor (Dept. of Biology and Biotechnology, The Hashemite University, Zarqa-Jordan). |
| Sep 10th 2006 – Nov 25th2012 | Assistant Professor (Dept. of Biology and Biotechnology, The Hashemite University, Zarqa-Jordan). Teaching the following courses: (1) B.Sc. level: General Biology, Plant Biology, Ecology, Reproductive Plant Biology, Selected topics, Seminar, Phycology, Animal Biology and Vertebrates. (2) M.Sc. level: Applied ecology, Ecosystem Management and Pest Integrated Management, in addition to the supervision of six M. Sc. students. |
| Sep 5th 2008 up to Sep 6th 2011 | Head of Biology and Biotechnology Dept. The Hashemite University, Zarqa-Jordan. (I chaired the department for three consecutive years working with 22 faculty member, 5 Teaching and research assistants, 5 technicians, ~600 students; 2 B.Sc. programs (Biological Sciences and Biotechnology) and one M.Sc. program (Biological Sciences). |
| Jun 5 2007- Sep 5 2007 Jun 15 2008 – Sep 1st 2008 | Visiting Scientist (Dr. Alan K. Watson Lab., Plant Science Dept., McGill University, Montreal–Canada) working on the projects (1) Improving the efficacy of the mycoherbicide Sclerotinia minor on broadleaf weeds (2) Effect of host plant age and competition on the efficacy of Sclerotinia minor on broadleaf plantain and knotweed. (3) Biocontrol of Pythium diseases in tomato using rhizobacteria (Dr. Donald Smith lab., Plant Science Dept., McGill University, Montreal–Canada). |
| Sep 2003 – 31 Aug 2006 | Research and Teaching Assistant (Plant Science Dept., McGill University, Montreal – Canada). Teaching the practical part of the following two courses: Agricultural Botany and Principles of Plant Sciences |
| Oct 1994 – Sep. 2002 | Instructor (Applied Sci. Dept., Qatar college Of Technology, Doha-Qatar). I taught the following courses: General biology, Functional anatomy, General Microbiology, Microtecniques, Laboratory Analysis, Ecosystem processes, Breeding of laboratory organisms and Parasitology & animal pests. – During the work, I supervised six graduation projects and three field-training courses for Applied biology, and health inspection students. |
| Sep 1985- Sep 1994 | Lecturer at several colleges and universities in Jordan (Intermediate University College, Amman-Jordan; Mu’atah University, Karak-Jordan; Jordan University, Amman-Jordan; Applied Science University, Amman-Jordan). |
