Dr. Phiset received his B.Eng. degree in bio-engineering from Tokyo Institute of Technology, Japan, and pursued his M.S. and Ph.D. degrees in chemistry at New York University, USA.
He also has an M.A. degree in translation and interpretation from Chulalongkorn University, Thailand, and a B.L. degree in law from Sukhothai Thammathirat Open University, Thailand.
Dr. Phiset began his career as a lecturer at the Faculty of Science, Chulalongkorn University. He later changed course and joined the Department of Special Investigation, Ministry of Justice, as a special case inquiry officer in 2005.
He later served in several management positions at the Ministry of Justice including the Director of International Affairs, and the Director of Legal Affairs at the Office of the Permanent Secretary for Justice.
During 2014-2018, through the secondment to work for TIJ, Dr. Phiset served as the Director of External Relations and Policy Coordination before returning to the Ministry of Justice to serve as the Director of Information and Communication Technology Center.
Dr. Phiset has been appointed the Executive Director of the Thailand Institute of Justice since 25 February 2021.