Before this appointment, Rahman held significant roles within the DSE. He first joined the exchange on April 15, 2010, as an Assistant General Manager. He was subsequently promoted to Deputy General Manager on April 22, 2013, and then served as General Manager and Company Secretary from April 27, 2017, until June 29, 2025. Rahman officially joined the position of COO on June 30, 2025.
During his tenure as general manager and company secretary, Rahman headed several key departments, including the Board and Corporate Affairs Division, TREC Affairs Division, Legal Affairs Division, Public Relations and Publications Division, and International Affairs Division, according to a press release, reports UNB.