Oishika practices corporate immigration law, and currently represents leading corporations in a variety of industries, including information technology, consulting and manufacturing. Her areas of practice include corporate U.S. immigration, particularly nonimmigrant visas, with a focus on helping leading IT firms comply with end-to-end nonimmigrant requirements.

Oishika has been a core part of Fragomen’s Foreign Consular Practice (FCP) team, assisting in the development of mock interview scripts and helping clients to understand consular trends in India. While working for Fragomen in India, she was integral to the ISO Quality Certification process for the firm’s India offices.

Oishika has been involved with various pro bono activities, including working with Amnesty International and the United Nations High Commissioner for Refugees. She has also assisted the senior attorney on the Supreme Court of India in high-profile litigation cases. Oishika has been an active volunteer with Child Rights and You (CRY)—a nonprofit international human rights organization—where she spearheaded an anti-child labor campaign, liaising with government officials and the civil society at large. Oishika has also assisted with individual pro bono casework through Fragomen, including Deferred Action for Childhood Arrivals (DACA) and asylum matters.

Oishika speaks English, Bengal and Hindi.