Mr Lee was appointed as an Independent Director of M1 on 1 June 2015.
Mr Lee is currently the Chairman of Singapore Totalisator Board (Tote Board), a position which he assumed on 1 January 2013. The Tote Board is a statutory board under the Ministry of Finance.
Mr Lee was appointed Chairman of Special Needs Trust Company Limited on 1 January 2019.
On 1 November 2013, Mr Lee was appointed independent non-executive director and Chairman of GuocoLand Limited.
Mr Lee retired from the Singapore Civil Service in October 2012 after a distinguished career in the Public Service. His appointments included being the Principal Private Secretary to the Prime Minister and Permanent Secretary in the Ministries of Labour, Community Development and Health.
Mr Lee was the Commissioner of the Inland Revenue Authority of Singapore (IRAS) from 2005 until his retirement in 2012. As the Commissioner, Mr Lee pushed for IRAS to excel in managing both tax compliance and customer service. In this increasingly globalised and competitive economy, IRAS has successfully engaged with the business community and international counterparts to ensure that the tax environment supports economic development.
Mr Lee was a President's Scholar and graduated with a Bachelor of Engineering (Mechanical & Production) (Hons-Class 1) from the University of Singapore and also holds a Master in Public Administration from Harvard University.