Mr Lee qualified as a Chartered Accountant in Ireland in 1988 and obtained his Certified Financial Planner (CFP) certification in 2002 and Registered Financial Planner (RFP) certification in 2006. He is a Fellow member of the Institute of Chartered Accountants in Ireland, a member of the Malaysian Institute of Accountants, a Fellow member of the Malaysian Institute of Taxation and a certified member of the Financial Planning Association of Malaysia (FPAM) and Malaysian Financial Planning Council (MFPC). He graduated from Trinity College, Dublin University, Republic of Ireland with a First Class honours degree in Computer Science and Master in Arts; and graduated from the National Institute for Higher Education (now known as Dublin City University) with Distinction and First Place in Post Graduate Diploma in Accounting.

He has previously served in Price Waterhouse Coopers for over 9 years both overseas and in Malaysia.

He has vast experience in audit, internal audit, tax consultancy, corporate planning, computerised systems, secretarial etc. His work experience covers semi-state bodies, statutory organisations, financial institutions, manufacturing, trading, gaming, plantation, construction and property development, provision of services sectors etc. He has been involved in training internal auditors and reviews of system implementation process.

He is currently a National Council Member of the Associated Chinese Chambers of Commerce and Industry of Malaysia ("ACCCIM") cum Deputy Chairman of the ACCCIM Information and Communications Technology Committee. He is also a Council Member of Klang Chinese Chamber of Commerce and Industry and North Perak Chinese Chamber of Commerce and Industry. As an active member in the Chinese business community, he often participates in dialogues with Government Ministries and Agencies regarding government policies. He speaks regularly in public forum on government incentives, bank facilities, Government's Annual Budgets, tax planning etc. He has been a commentator at Astro and Oriental Daily Press on the Government's Annual Budgets and he has been a newspapers columnist on tax matters.

Mr Lee was conferred A.M.N. title by the Yang Di-Pertuan Agong in 2000 arising from his contributions in the business community.

He started his accountancy practice in 1994.