Her notable cases include enforcing blockchain regulations on behalf of Paytm against telecom companies,[2] securing damages for a disability rights activist against SpiceJet, and addressing issues related to platform liability and online speech restrictions.

Paytm petition to implement the TCCPR Rules and TRAI Act Nundy represented Paytm, which sought enforcement of the Telecom Commercial Communications Customer Preference Regulations, 2018, and Telecom Regulatory Authority of India Act, 1997, to prevent unsolicited communications that defrauded and spammed consumers.

Nundy argued that the right to informational privacy under Articles 21 and 19 of the Indian Constitution encompasses protection from spam and fraud caused by unsolicited commercial communications.

[14] Notably, her legal efforts led to the closure of contaminated water outlets near the Union Carbide factory, which posed a health risk to survivors and residents.

A landmark petition was filed in 2015 by the NGO RIT Foundation, followed by others in 2017, including one by the All India Democratic Women’s Association, which Nundy represented.

The drafting inputs and work with the government provided recommendations for quicker trial and enhanced punishment for criminals accused of committing sexual assault against women.

The Supreme Court ruled in favor of Ms. Ghosh, awarding her compensation of ₹10 lakh and directing all air carriers to provide training for their staff on the needs and proper treatment of passengers with disabilities.

The NGO sought judicial intervention to ensure the provision of essential supplies and medical care for COVID-19 patients undergoing home treatment due to a shortage of hospital beds.

Nundy's arguments focused on the need for effective measures, including a functioning GNCTD helpline and website, telemedicine availability, and a system for tracking and managing the limited oxygen supply.

She also advocated for providing COVID-19 kits containing necessary treatment supplies to those unable to afford separate housing and medical care, along with ensuring access to food.

She has also worked with companies such as ITC Vivel and Penguin Random House to create education modules that simplify laws to empower women.

Nundy worked as a lawyer with the United Nations[1] as a Global Advocacy Officer, assisting the secretary-general’s report on conflict prevention.

She held widespread consultations to determine recommendations to implement the new constitution, especially for legal empowerment and access to justice for children and women.

[1] Nundy’s advisory work also includes a legislative workshop on constitutional rights with the Senate of Pakistan, advice to the Government of Bhutan with UNICEF Bhutan Country Office (Sept 2006) on the fulfilment of its treaty obligations regarding certain international human rights conventions, and advising SAARC countries on progress in legal reform and policy since 2001, pursuant to several SAARC and international conventions and its impact on the Millennium Development Goals.

In 2019, Nundy was appointed to the High Level Panel of Legal Experts on Media Freedom, chaired by Lord Neuberger and Amal Clooney.

[36] She recently authored A Report on Blasphemy Laws Globally, on behalf of the High Level Panel on Media Freedom, published by the International Bar Association Human Rights Institute and the High Level Panel on Media Freedom (through the International Bar Association with UNESCO).