Mr Wong started his career in 1967 with the Singapore Economic Development Board and later with the Ministry of Finance. In 1972 Mr Wong joined the United Overseas Bank (UOB) Group in Singapore. During his 30 years with the UOB Group, Mr Wong held several key appointments, including 10 years as Group President and as a Member of the UOB Board & its Executive Committee before leaving UOB in 2000 to join Mediacorp Pte Ltd as its Group CEO and later as Chairman. While in Mediacorp he remained as a Board Member of the UOB Group, and Chairman of its Audit Committee.
Over the course of his career, he was a Member of the Temasek Advisory Panel for 10 years and served as Board Trustee & Chairman, Investment /Endowment Fund Committee of Nanyang Technological University for 17 years, Board Member of the Economic Development Board (EDB) and President-Commissioner of Bank Internasional Indonesia (BII) TBK.
Mr Wong currently serves as Chairman of Fullerton Financial Holdings Pte Ltd, MattCapital Pte Ltd and A. Menarini AsiaPacific Holdings Pte Ltd, and as a Non-Independent Non-Executive Director of Pavilion Capital Holdings Pte Ltd in Singapore.