He served as a Principal Private Secretary to then Senior Minister Goh Chok Tong from 2004 to 2006, he remained Singaporean High Commissioner to Australia from March 2008 to June 2011.[3] He was appointed Permanent Secretary, (Foreign Affairs) in April 2022, having formerly been Permanent Secretary (Sustainability and the Environment).[4]
He also served as a board member of the Middle East Institute and the Institute of South Asian Studies.[5]