Wewerinke-Singh has published widely in the field of sustainability law. She is the editor of the Cambridge Handbook on Climate Change Litigation (with Sarah Mead, forthcoming with Cambridge University Press) and the Environmental Law and Governance in the Pacific: Climate Change, Biodiversity and Communities (with Evan Hamman, Routledge 2020). Her book State Responsibility, Climate Change and Human Rights under International Law (Hart Publishing 2019) explained when and where State action related to climate change may amount to a violation of human rights. 

Wewerinke-Singhs research builds on more than fifteen years of practice. She has advised governments in international climate negotiations, represented NGOs at the UN Human Rights Council, and advised the African Commission on Human and Peoples’ Rights and UN OHCHR on the nexus between climate change and human rights. She currently serves as lead counsel for Vanuatu in the advisory proceedings on climate change before the International Court of Justice (with Julian Aguon), and chairs the Loss and Damage Legal Experts Subcommittee of the Commission of Small Island States on Climate Change and International Law.

Prior to joining the University of Amsterdam, she worked at Leiden University (2018-2022) and at the University of the South Pacific (2015-2018). She maintains an affiliation with the University of Fiji as an Adjunct Professor of Law at the Justice Devendra Pathik School of Law, and is Of Counsel at Blue Ocean Law, a boutique international law firm based in Guam.