Dato’ Mah Weng Kwai was appointed as a Judicial Commissioner of the High Court of Malaya and then a Judge of the High Court of Malaya in Kuala Lumpur. He was elevated to the Court of Appeal in 2012 and retired from the judiciary in 2015.

Dato’ Mah was appointed a Commissioner of the Malaysian​ Aviation Commission in 2016. Presently, he is a Legal Consultant with​ M/s MahWengKwai & Associates and also presides as an Arbitrator and Mediator.

Dato’ Mah was called to the English Bar as a Barrister-at-Law 1971 and to the Malaysian Bar as an Advocate and Solicitor of the High Court of Malaya in 1972. From 1973 to 1985. Dato’ Mah served in the judicial and Legal Services of Malaysia and held, inter alia, the posts of Magistrate, President of the Sessions Court and Senior Assistant Registrar of the High Court. He also served as a Deputy Public Prosecutor and Senior Federal Counsel in the Attorney General’s Chambers in 1978 and 1981, respectively. From 1985 to 2009, Dato’ Mah left the Judicial and Legal Services and resumed practice as an Advocate and Solicitor in M/s MahWengKwai & Associates and had acted as Counsel in numerous arbitration hearings.

Dato’ Mah holds a Master of Law (Hons) from the University of Sydney in Australia. Throughout his career, he held a variety of key positions and membership in various professional organizations. including as the President of the Malaysia Bar and LAWASIA (The Law Association for Asia and the Pacific); Member of Malaysian Law Reform Committee under the Prime Minister’s Department; and Member of the Organizing Committee of the International Association of Refugee Law Judges (IAELJ) Regional Conference on the Role of the Judiciary in Protecting Refugees.

Dato’ Mah Weng Kwai was appointed as a Commissioner of SUHAKAM in June 2016 for the term 2016-2019 and the term has been extended until 2022.