In 1982, Barkat started his professional career by joining the Department of Economics in University of Dhaka. He is the immediate past chairman of the same department. He was the Chairman of
Janata Bank Limited from 2009 to 2014. After his appointment he refused a company car, and special lifts and chairs for himself. During Barkat's chairmanship at Janata Bank, about Tk. 5,504 crore loan or 25 percent of bank's capital base, was provided to
AnonTex Group, owned by Md Younus Badal. He criticized
Abul Maal Abdul Muhith, Minister of Finance, for questioning the governance of Janata Bank and denying an extension to his chairmanship. Barkat said Muhith was not loyal to either
Awami League or
Sheikh Mujibur Rahman and had undue favors from the CSR fund. Barkat was elected president of the
Bangladesh Economic Association at the end of 2017. He received the Order of the Rising Sun, Gold Rays with Neck Ribbon in 2022. On 11 July 2025, Barkat was detained in connection with a graft case filed by the
Anti-Corruption Commission. == Personal life ==