Datuk Tong began her career as secretarial assistant with Siva, Heng & Monteiro in 1978 and was promoted to manager of secretarial services and audit in 1980. She left the firm in 1981 to join Shapadu Holding Sdn Bhd as an acountant and company secretary until March 1983.

She joined Highlands & Lowlands Berhad in November 1983 as an accountant and assistant company secretary. In 1985, she joined Kumpulan Guthrie Berhad and had held various senior positions until her promotion as Chief Financial Officer (CFO) in April 2003. In October 2007, post the completion of the merger of Sime Darby Berhad, she was appointed as the CFO of Sime Darby Plantation Berhad. In June 2008, she assumed the position of Group CFO of Sime Darby Berhad. She held this position for about 9 years, until her appointment as Executive Director/Group CFO of Sime Darby Property Berhad in November 2017, post the completion of the demerger of Sime Darby Berhad. She retired as Group CFO of Sime Darby Property Berhad on 31 March 2019 and as Executive Director on 31 May 2019.

She was named the Best CFO in Malaysia for 2014, 2015 and 2017 at the Institutional Investor Corporate Awards-Alpha Southeast Asia and Best CFO for Investor Relations (Large Cap) for 2013, 2014 and 2017 at Malaysia Investor Relations Awards.

Velesto Energy Berhad

NIL

NIL

NIL