Mr. Abdulla graduated from Seattle University, USA with a Bachelor of Science in Civil Engineering in 1974. He started his career as a site engineer in Basic Chemical Industries (a company co-founded by his father) in Dammam. He quickly moved to be its Technical Director, then Board Member in 1980. During this period he was a part-time Site Inspector of the Real Estate Development Fund.
In 1979, together with one partner, he established National Fruit Juice Company (Danah Juice). As the Managing Director of the company, he was involved in the complete design, construction and whole operation of the plant.
In 1982 he established Abdulla Al-Moaibed Engineering (AME) in Al Khobar as a successor to Arabian Business Management Services (ABMS) which has been operating since 1973 and won a GES contract with Aramco in the same year. He led the firm during this period to establish its good standing with Saudi Aramco, and at the same time diversified its activities into other areas such as SCECO, Kemya, Ar-Razi, Petrokemya, Unilube, and to the private sector to design hospitals, real estate developments private housing and other projects.
In 1987, and in addition to being the Principal of AME, he carried a new responsibility as Chairman of Basic Chemical Industries in Dammam. In January 2001 he joined hands with Azmi Abdulhadi and established AMCDE.