Dasgupta has served as the Fleet Operations Officer of the Western Fleet. In his staff appointments, he has served as the Commander Work Up and as the Staff Officer (ND) at Naval HQ. In his instructional appointments, Dasgupta has served as directing staff at the Defence Services Staff College, Wellington and as the Officer-in-Charge Navigation and Direction School. As a commodore, Dasgupta served as the Naval Assistant (NA) to the Chief of the Naval Staff.
Chief Staff Officer (Operations), Western Naval Command
The officer has significantly and actively contributed to the planning, conduct and successful accomplishment of mission of national and humanitarian importance, and the resultant positive image of India in the Indian Navy. For this exceptional and distinguished service in planning and execution of naval missions in the conflict zone of Yemen resulting in evacuation of Indian nationals from the war zone, response to the national water crisis in Maldives and towards co-ordination of all operational activities resulting in the saving of 33 lives at sea, Rear Admiral Biswajit Dasgupta is awarded the Yudh Seva Medal.
On 12 June 2019, on promotion to the rank of Vice Admiral, Dasgupta took over as the Controller of Personnel Services at Naval Headquarters.[8] On 12 June 2020, he took over as the Chief of Staff of the Eastern Naval Command from Vice Admiral Satish Namdeo Ghormade.[9]