Gabriel Ong is Senior Assistant Director with the Psychological and Correctional Rehabilitation Division (PCRD) of the Singapore Prison Service (SPS). Concurrently, he is Assistant Director with the Resilience, Safety and Security Psychology Branch (RSSP) of the Home Team Behavioural Sciences Centre (HTBSC). Both PCRD and HTBSC are psychology units in the Ministry of Home Affairs, Singapore. His primary roles at SPS include overseeing the evaluation of rehabilitation programmes and regimes. Prior to this, he was involved in forensic risk assessment and offender rehabilitation, specifically in the area of sexual and violent offending. His primary roles at the HTBSC include overseeing research on issues such as violent extremism and resilience. He holds a Doctor of Psychology (Clinical) from the James Cook University (Singapore). He has been with the Ministry of Home Affairs since 2001.