He has a long experience in teaching academic since 1997, where he worked as a demonstrator in Department of Science, Faculty of Education in the period from 1997 to 2001, and a lecturer from 2001 to 2012, then assistant professor from 2012 until now. Othman awarded a PhD degree in Department of Molecular Biology and Biotechnology at the University of Sheffield, United Kingdom. The research project of his study focused on investigation of the dual roles of two citric acid cycle enzymes, aconitase A and B, as both metabolic catalysts and RNA-binding proteins that mediate a novel oxidative-stress responding and rapidly reacting, post-transcriptional mechanism of regulating gene expression.