Datuk Kamaruddin has significant experience in investment banking, corporate finance, mergers and acquisitions. His career started in 1980 with a leading merchant bank in Malaysia. Subsequently, he served as a Director of several private companies, companies listed on Bursa Malaysia Securities Berhad ("Bursa") and companies listed on the Stock Exchange of India as well as listed on Nasdaq (U.S.A.).

Currently, Datuk Kamaruddin is the Chairman of DNV GL Malaysia Sdn Bhd, part of the Global DNV GL Group, which is a leading technical assurance company providing specialised services for the Oil and Gas Industry. He has been with the DNV GL Group since 1995, and retired as its Executive Chairman in June 2017.

Datuk Kamaruddin is currently the Independent Non-Executive Chairman of GHL Systems Berhad, Great Eastern Takaful Berhad and HSBC Amanah Malaysia Berhad. In addition, he is also an Independent Non-Executive Director of Great Eastern Life Assurance (Malaysia) Berhad, Great Eastern General Insurance (Malaysia) Berhad, BFC Exchange Sdn Bhd,  FIDE FORUM (Financial Institutions Directors Education FORUM) and Fraser & Neave Holdings Berhad.

He serves as a trustee for the Malaysian Oil & Gas Services Council. Prior to being a trustee, he was an elected executive council member.

(1) GHL Systems Berhad 
(2) Fraser & Neave Holdings Berhad
(3) Great Eastern Life Assurance (Malaysia) Berhad 
(4) Great Eastern Takaful Berhad 
(5) Great Eastern General Insurance (Malaysia) Berhad
(6) HSBC Amanah Malaysia Berhad

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