Al Rajhi chairs alrahji bank, which was cofounded in 1957 by his father Sulaiman and uncles Mohammed, Abdullah, and Saleh. For more than 35 years, he has held positions at alrajhi bank, which trades on the Saudi stock exchange and is one of the world's largest Islamic banks and the Middle East’s most valuable bank. alrajhi bank has $260 billion in assets and reports having more than 18.5 million customers as of 2024. Abdullah bin Sulaiman also chairs several other family companies, including Al Rajhi Capital and Al Rajhi Holding Group.