Mohammad Mezbah Uddin Chowdhury

Chowdhury joined the Bangladesh Civil Service as an assistant commissioner in 1991.[5]

In May 2004, Chowdhury was elected office secretary of Dhaka University Political Science Department Alumni Association.[6] He was former stationed at the Bangladesh Institute of Governance and Management.[7]

Chowdhury was the joint secretary of Cabinet Division in 2017.[8] In 2018, he was the Sylhet Divisional Commissioner.[9]

In February 2020, Chowdhury was transferred from additional Secretary to Appointment Promotion and Deputation Wing of Ministry of Public Administration to Secretary of the Ministry of Shipping.[10] Chowdhury launched an alternate ferry service for the Shimulia-Kathalbari route on an experimental basis.[11] He suggest using waterways to trade with India to reduce costs.[12][13] He advocated using the India-Bangla protocol routes under Bangladesh Inland Water Transport Authority and highlighted the opportunity for Bangladesh to trade with the Seven Sister States of India.[14][15] He was present in negotiations with the Water transport workers which led to the strike ending.[16][17] He reported that a ferry hit the pillar of the Padma Bridge due to negligence of the crew.[18] He was present at the 2.34 billion BDT contract signing between Chattogram Port Authority and Nippon Koei JV.[19]

In 2021, Chowdhury was the secretary of the Ministry of Environment, Forest and Climate Change.[20] He was present at the inauguration function of a 7.93 billion BDT dredging project for Mongla Port led by chairman of the port Rear Admiral Mohammad Musa in March.[20] He saw the launch of Matarbari Port.[21] He sought US$58 million from the Cabinet Committee on Economic Affairs to upgrade Chattogram Port.[22] In December 2021, he delegation led by Khalid Mahmud Chowdhury, State Minister for Shipping, to the Expo 2020.[23]

In March 2022, Chowdhury, as secretary of the Ministry of Shipping, worked to bring the crew of MV Banglar Samriddhi from Ukraine.[24] It had been hit by a missile in the Black Sea during the 2022 Russian invasion of Ukraine killing one of the crew member.[24] He was present at the graduation ceremony of the Bangladesh Marine Academy.[25] In May 2022, he was transferred from the Secretary of the Ministry of Shipping to the Secretary of the Local Government Division.[26] He served under Minister of Local Government and Rural Development Md Tazul Islam.[27]

On 27 October 2022, Chowdhury was promoted to senior secretary.[5][28] On 31 October, he was transferred from the Local Government Division to the Ministry of Public Administration replacing KM Ali Azam.[5][29] He launched the Government Employee Management System for the public administration.[30] According to The Daily Star, he oversaw significant changes in the public administration postings to advantage the Awami League led government before the general election in 2024.[31] He sent former Deputy Secretary AKM Rezaul Karim of the Ministry of Public Administration to forced retirement after he was found guilty of rape in court.[32]