Ir Haji Yusoff bin Daud graduated from the University of Brighton with a Bachelor of Science (Honours) Degree in Electrical Engineering in 1968. He joined National Electricity Board (LLN), Kota Bharu immediately after his graduation and in 1970 he was posted to Kedah as Assistant Engineer Consumers. In 1974, he was promoted to District Engineer where he was responsible for the planning and implementation of electricity supply for northern Kedah and Perlis. In 1977, he became the Senior District Manager, Kuala Terengganu, where he was responsible for the overall management and operations of electricity supply in Terengganu. From 1979 to 1980, he was attached to Petronas in the Special Projects Department as its Deputy Head responsible for the planning of the Peninsular Gas Utilisation Project.

In 1981 he was appointed a Director of Zaidun-Leeng Sdn Bhd and was subsequently made the Managing Director in 1994; a position which he held until 2002 when he was appointed as the Chairman until today. He has over 49 years of management and professional experience in the consulting engineering industry. Zaidun-Leeng Sdn Bhd specialises in the planning and design of infrastructure projects including mechanical, electrical and structural engineering services for buildings.

Ir Haji Yusoff bin Daud was appointed to the Board of Directors on 14 September 1995. He also serves as a Chairman of the Executive Committee, Investment Committee and ESOS Committee of the Company.

He does not have any family relationship with any Director and/or major shareholder of the Company and has no conflict of interest with the Company.

He is the Honorary Non-Executive Chairman of Toyo Ink Group Berhad.