• Organic chemistry instructor Inaya Medical College, Riyadh 2017 up to date. • Analytical chemistry instructor Inaya Medical College, Riyadh 2017 up to date. • Polymeric Biomaterials Technology instructor – Inaya Medical College, Riyadh 2017 up to date. • General chemistry instructor Inaya Medical College, Riyadh 2016 up to date. • Chemistry lab instructor Inaya Medical College, Riyadh 2013 up to date. • Biochemistry lab instructor Inaya Medical College, Riyadh 2013 up to date. • Chemistry instructor and laboratory assistants Head – The National Institute for Specialized Health Training (Member of Dallah Group) Riyadh 2004 – 2012 • Teacher of chemistry and science – Ethiopian International School Riyadh 2001 – 2003 • Chemistry instructor – Faculty of Education- Holy Quran University-Sudan 1998-1999. • Teacher of chemistry – Rep. of Yemen 1993-1998. • Practical chemistry Supervisor – Faculty of Engineering Sciences – Omdurman University 1990 – 1993 • Chemistry Instructor – Intermediate Teachers Training College Sudan 1983-1993 • Head of science Department-Intermediate Teachers Training College-Sudan 1990-1993.