Krishna was born and raised in Sivasagar, Assam, and has worked as a lawyer in the development sector, with a keen focus on human rights. Until recently, he was an advocacy lawyer with Justice Ventures International, where his primary role was to research and draft complaints and reports on bonded labour, sex trafficking, and POCSO cases in the state. Krishna also worked with Human Rights Law Network and was a Goonj Fellow in 2019-2020. He was a Justice Leila Seth Fellow in the 2021 batch.