Datin Nafesah is a Director on the Board of Si3. She was appointed to the Board in April 2006. She is a chartered accountant by profession. Nafesah is a Fellow member of the Certified Chartered Accountants, UK.

She started her career in 1978 with United Malayan Banking Corporation, a leading commercial bank, then moved to Pernas,a government-owned trading house as their financial accountant. In 1982, she joined a leading financial institution, Kewangan Usaha Bersatu Bhd., where she headed the treasury and finance functions for nearly a decade.

Currently, she is with Rasma Group of Companies, a top mechanical and electrical contractor, where is she is a Director. Presently, Datin Nafesah owns and is actively involved in running numerous Malaysian family business concerns such as the manufacture of security printing solutions for brand protection against counterfeiting and tampering, as well as in the promotion and production of traditional natural products.