Madam Tan began her career in 1984, in the finance and budget department of Employees Provident Fund ("EPF"). In 1988, she was transferred to the investment department, where she was responsible for the management of the EPF's external fund managers and other domestic investment assets, including Malaysian Government Securities, loans/debentures, equities and money market placements.

In 1996, Madam Tan was promoted to the position of senior investment manager, where she specialised in fixed income investments and was involved in EPF's fixed income investments in several large privatisation projects in Malaysia. 

In 2009, Madam Tan was appointed as the head of investment compliance and was responsible for ensuring all investment settlements were undertaken in compliance with internal policies/guidelines and other related legal requirements.

In 2019, Madam Tan was appointed as the head of risk department where she oversaw the management of amongst others, the operational risks, technology risks, investment risks and investment market risks of EPF. She retired from EPF in April 2021.

Madam Tan had also in the past served on the Board of Malaysia Building Society Berhad, Sunway Holdings Incorporated Berhad (now known as Sunway Holdings Sdn Bhd) and Malakoff Corporation Berhad.

Madam Tan is currently an Independent Non-Executive Director of Affin Islamic Bank Berhad, Senheng New Retail Berhad and Sunway Construction Group Berhad.

- Affin Islamic Bank Berhad
- Senheng New Retail Berhad
- Sunway Construction Group Berhad

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