Tan Sri Omar was appointed to the Board of UEM Builders Berhad on 1 October 2018.

Tan Sri Omar is a Professional Civil Engineer registered with the Board of Engineers Malaysia and a Fellow of the Institution of Engineers Malaysia and also of Academy of Science Malaysia. He graduated from the University of Malaya in Civil Engineering and holds a Master of Science degree in Advanced Structures from University of Southampton, U.K.

He has spent more than three decades serving the government as a civil engineer in the Public Works Department (PWD) Malaysia and during this tenure, he held various positions in the department. He began his career in the PWD after graduating from University of Malaya. After two postings, initially as a structural design engineer and later as a district engineer, he pursued a post-graduate study in Structural Engineering at the University of Southampton, U.K. Upon his return in 1973, he was appointed resident engineer for various projects, including Ipoh General Hospital, and roads and bridges in various parts of Kuala Lumpur.

In September 1981, he was appointed Director of PWD Negeri Sembilan. From then on, he has risen in rank through the department, holding various senior positions such as Director of Management, Director of Water Supply, and Deputy Director General. Finally, in June 1996, he was appointed to the top position as the Director General of Public Works Malaysia.

Upon retirement from the public service, he joined Kuala Lumpur City Center Bhd as its Managing Director where he led the project management teams for the Putrajaya development as well as other projects in KLCC.

After KLCC, he worked as a consultant in SMHB Sdn Bhd, a civil engineering practice specialising in water supply engineering. He retired from SMHB Sdn Bhd in April 2009.

Tan Sri Omar has been the President of The Board of Engineers Malaysia, The Malaysian Water Association (MWA) and Malaysian Structural Steel Association (MSSA) at various times from 1988 to 1999. At the international level, he has served as Chairman of the Water Supply Association of Asia Pacific Region. He was also both an Executive Board Member and a Scientific & Technical Council Member of the International Water Supply Association (now International Water Association).

Tan Sri Omar has been a Council Member of Universiti Teknologi Malaysia, a member of the Development Committee of Universiti Kebangsaan Malaysia, a Board Member of the Malaysian Highway Authority and the Putrajaya Development Corporation. He was also a Board Member of Construction Industry Development Board and was a Member of the Board of Trustee of Construction Research Institute, Malaysia.

Tan Sri Omar is currently a Non-Executive of UEM Builders Berhad and KLCC (Projeks) Sdn Bhd.