Chris joined the Health Sciences Authority, Singapore, after receiving his PhD from the National University of Singapore in 2001. He is currently the Group Director of Applied Sciences, overseeing 7 departments providing scientific and medical expertise in the areas of illicit drugs and pharmaceutical analyses, toxicology, criminalistics, forensic biology, forensic pathology, and chemical metrology.
Chris also maintains a practice in the department of forensic biology, where he has led initiatives including the use of Y chromosome DNA databasing, whole mitochondrial genome sequencing, DNA phenotyping, age prediction, and evaluation of DNA deposition and transfer. More recently, his team has established the use of DNA-based methods for species identification of plant material containing psychoactive substances.
He is a founding member (former Chair, current Secretary) of the Asian Forensic Sciences Network DNA Workgroup, Singapore representative on the INTERPOL DNA Monitoring Experts Group since 2016, Vice-President of the Governing Council of the Management Development Institute of Singapore since 2007, and a member of the Ngee Ann Polytechnic Life Sciences and Chemical Technology Advisory Committee since 2015. From 2006 to 2016, he also held the appointment of adjunct associate professor at the National University of Singapore, and was honoured with the Outstanding Science Alumnus Award in 2011. In recognition of his contributions to forensic sciences in Singapore, he was conferred with the Public Administration Medal in 2018.