Tamanna Sharmin completed her Master’s degree ( under thesis group) from the Faculty of Social Science at Shahjalal University of Science and Technology (SUST), Sylhet. She began her professional journey with the Bangladesh Cadet College Service and served for several years as a Lecturer at Joypurhat Girls' Cadet College and Mirzapur Cadet College. She later joined Eminence College, a sister concern of Daffodil, as a faculty member. Since January 2023, she has been serving as a faculty member in the Basic Science Division at the World University of Bangladesh.