Dr. Juman is a Senior Lecturer of Operations Research in the department of Mathematics at University of Peradeniya (UOP). He received his Ph.D (by Research) in Mathematics from UBD Brunei after having received his first degree, BSc (Hons) in Mathematics from University of Peradeniya Sri Lanka in June 2008. He has more than six years of teaching experience. He teaches various Operations Research, Applied and pure Mathematics courses at University of Peradeniya, Sri Lanka. He has published several papers on Logistics and Supply Chain Management. Currently he is engaged in research in the fields of Logistics Supply Chain Management and Production Inventory Control. He has served as reviewer for various A and A* journal of the ABCD list (European Journal of Operations Research, Omega, International Journal of Production Research, etc).
Member of the Faculty Land, Buildings & maintenance committee, Department of Mathematics, Faculty of Science, University of Peradeniya, Sri Lanka - (10-06-2016 – 10-06-2019)
Member of the Board of Study in Science Education, Postgraduate Institute of Science, University of Peradeniya, Sri Lanka - (11th June 2016 – to-date)
Coordinator for religious activities on Diamond Jubillee celebrations (1942-2017), Faculty of Science, University of Peradeniya, Sri Lanka - (2nd June 2017 – 10th October 2017)
Cultural Secretary of Muslim Majlis Association, University of Peradeniya, Sri Lanka - (March-2006 - Feb-2007.)