Currently an attorney of Cleary, Gottlieb, Steen & hamilton and an alumnus of Harvard Law, her practice focuses on corporate and real estate transactions, Nirosha joined the Law Firm in 2002. She received a J.D., cum laude, from Harvard Law School in 2001, and a B.A., magna cum laude, from Harvard College in 1998. She served in the National Assembly of the Kingdom of Cambodia to assist the government in local conflict resolution and is currently a coordinator of the peace process in Sri Lanka. She is a recipient of a number of fellowships, including the Kaufman Fellowship in Public Interest Law and the Harvard Law School Hewlett Fellowship in Law and Negotiation.

Nirosha was selected for a grant to form a committee in Boston to plan and organize what would be the first national student conference for Sri Lankan Americans, providing a forum to discuss issues of identity and community. The conference addressed the persisting internal divisions within the Sri Lankan American community by fostering unity within the new generation of Sri Lankan Americans.

Nirosha is currently working as the Deputy Director for the Peace Secretariat and is handling the legal side of the negotiations.