Ashima is a revered Independent Practitioner primarily practicing in the Supreme Court of India and the High Court of Delhi. She is the former junior of Mr. K.T.S Tulsi, Senior Advocate and Member Parliament (Rajya Sabha ), and Mr. Vivek Tanka, Senior Advocate and Member Parliament(Rajya Sabha).

Ashima, a criminal and constitutional lawyer by profession, is the legal mind behind the Criminal Law (Amendment), 2019 which sought gender-neutral rape laws advocating for the rights of all genders, especially transgender persons. The said Bill was introduced to the Rajya Sabha in July 2019 and is pending for consideration.

She also partly drafted the Protection from Lynching Bill, 2017 which too while its pendency in Rajya Sabha since December 2017 has now become a law adopted by the State of Rajasthan.

Ashima has the experience of working with various noted Public Interest Litigations namely K.S.Puttaswamy v. Union of India (Right to Privacy Case); construction of foot-over-bridges in Delhi for safety under Article 21 (Abhishek Dutt v. NCT of Delhi); Rights of safai karamcharis (Abhishek Dutt v. NCT of Delhi); seeking criminal action for the manual scavenger deaths (Criminal Justice Society v. Union of India); seeking gender-neutral rape laws (Criminal Justice Society v. Union of India).

At present, Ashima is the lead counsel in the Food Security case pending before the Supreme Court seeking the pan-India establishment of Community Kitchens to combat hunger, malnutrition & starvation and the deaths arising thereof.

Furthermore, she is the Secretary of Criminal Justice Society of India & the National Legal Head of the International Anti-Terrorism Movement.