Ir Haji Yusoff 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 the 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 53 years of management and professional experience in the consulting engineering industry. Zaidun-Leeng Sdn Bhd specializes in the planning and design of infrastructure projects including mechanical, electrical, and structural engineering services for both government and private sectors.
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