Sharmin works in diverse areas of international law, including international economic law and trade law, international refugee law, law and development and South Asian law. Sharmin also works in consumer law and equity and has published journal articles in these areas. Her research includes a Canadian International Development Criminal Justice Reform Programme in Bangladesh, as well as a human rights study on a persecuted minority group, namely Biharis in Bangladesh (supported by ELCOP, a human rights organisation in Bangladesh). Sharmin has presented and published her research in Australia and overseas. Sharmin moderated a panel titled 'Green Policies for Inclusive Trade and Climate Justice' at the 2024 WTO Public Forum in Geneva. 

Sharmin has completed four PhD supervisions in Australia's renewable energy sector (Rosie Rowe), the right to nationality (Noah Motaung), international trade and investment law (Ajith Anawaratna), and corporate accountability for the violation of human and environmental rights in the shipbreaking industry in South Asia (Mohammad Zulfikar Ali). Sharmin has supervised Honours and LLB students in international refugee law and international criminal law and welcomes research proposals from Honours and Post-graduate students in international law, law and development, consumer law and equity and climate justice. She is one of the editors of the journal International Trade and Business Law Review. 

Sharmin received the Curtin Law School Dean's Research Prize 2018 in recognition of outstanding achievements and contributions to research. She also received the 2018 Curtin Law School Teacher of the Year Award for excellence in learning and teaching. At Curtin Law School, Sharmin teaches Principles of Equity and Consumer Law and Policy. Previously, she taught several law units at Macquarie University and Western Sydney University in Sydney, and BRAC University in Dhaka. Sharmin holds a PhD in Law from Macquarie University and an LLM in International Law from the University of Cambridge. She graduated First Class First in her LLB (Honours) and First Class Second in her LLM from the University of Dhaka.