Abdul Rahman started his career as a Project Architect in 1994 at FAA Architect, prior to enhancing his career at Teknikarya Arkitek in 1996. He later moved to Radicare (M) Sdn Bhd as an Assistant Project Director in 1998. His interest in business led Abdul Rahman to set up Abdul Rahman Richard Architect(ARRA) in 2003, which was involved in a multitude of government and private sector projects around the country, including the University Malaysia Perlis(UNIMAP) and the soon to be constructed Hospital University Malaysia Sabah (HUMS)amongst others. Abdul Rahman took over Reliant Oil field Sdn Bhd (ROFSB), an integrated petroleum and gas services company in 2015. The company is 66% Sabah-owned as well as being the only company from Sabah with Category -1 PETRONAS license.