Aruneshwar Gupta has practised in the Supreme Court of India since 1976 and has appeared before High Courts across India. He has also been involved in litigation in Singapore and the United States of America. He was designated Senior Advocate by the Supreme Court of India on 27 March 2019.

He was Advocate-on-Record for the State of Rajasthan in the Supreme Court from 1990 to 1993 and from 1994 to 1999, and Additional Advocate General for the State of Rajasthan in the Supreme Court from 2004 to 2009.

His practice includes court work and the drafting and settling of opinions and agreements, including in real estate, family law and the Web3 space. Some 500 judgments in matters in which he appeared have been reported.

He served as Honorary Secretary of the Supreme Court Bar Association (1995–96) and Vice President of the Supreme Court Advocates-on-Record Association (1999–2001). He was involved in drafting the Sports Acts enacted by the States of Rajasthan, Himachal Pradesh and Uttar Pradesh. He was chief draftsman of the “White Paper on Publishing and Printing of Judgments using Neutral Citation” and a member of the Supreme Court Committee on Subject Categorization.

He has written and spoken on legal subjects in India and abroad, and presented papers at Commonwealth Lawyers Association conferences in Hong Kong (2009), Livingstone, Zambia (2019), Goa (2023) and Malta (2025). His current areas of interest are Online Dispute Resolution and peace mediation.