Tanjina has joined the Monash Law Faculty as a full-time lecturer from August 2019. Her previous teaching experience included working as a full-time Lecturer at a premier Bangladeshi Law School for three and a half years. During this time, she led a research project for the United Nations Development Programme, which produced a research report proposing reforms to the criminal justice sector in Bangladesh.

Tanjina completed an LLM, specialising in Commercial Laws at the University of Cambridge, and holds another LLM, as well as LLB, from the University of Dhaka. Tanjina is also a former Commonwealth Scholar.

Her PhD at Monash (supported by an International Post Graduate Research scholarship) was in International Economic Law.  During her PhD candidature, she participated in the investment treaty mapping project undertaken by the United Nations Conference on Trade and Development.

Tanjina’s research interests include International Economic Law, Arbitration, Public International Law, and Commercial Laws. She has published internationally on these topics. A book chapter written by her has been published in the Handbook on International Investment Law and Policy, published by Springer. Tanjina has also recently published her book entitled 'Application of Most-Favoured-Nation Clauses by Investor-State Arbitral Tribunals, International Law and the Global South (Perspectives from the Rest of the World)' published by Springer, Singapore, 2020. Presently, Tanjina is initiating a new research project on the application of human rights norms in investor-state arbitration.