[3] He had served a term as the general secretary, and previously treasurer, of the Asiatic Society of Bangladesh.
[3] He is a Board of Trustee member of Banglapedia, the national encyclopedia published by the Asiatic Society of Bangladesh.
[8] Rahman was the chief returning officer of the 2019 Dhaka University Central Students' Union election.
[11] On 28 July 2020, Rahman was appointed chairperson of Janata Bank replacing Jamal Uddin Ahmed, who had faced allegations of graft in approving loans.
[6][12] Rahman was the chief returning officer of the 2021 Dhaka University Central Students' Union election.