Dariia-Anastasiia Lesniak joined the Basel Institute in March 2026 as an Associate, Corruption Prevention. She is an attorney-at-law and anti-corruption and compliance specialist with over six years of experience advising on integrity, corporate governance and regulatory frameworks. In her role, she supports the delivery of corruption risk assessments, compliance gap analyses and the development of anti-corruption policies and tools across sectors.

Prior to joining the Basel Institute, she worked at the National Agency on Corruption Prevention of Ukraine, where she played a key role in advancing private sector integrity. Her work included analysing and aligning Ukrainian anti-corruption regulations with international standards and the EU acquis, contributing to the implementation of the State Anti-Corruption Programme, and developing policy proposals and methodological guidance for businesses and public institutions.

Alongside her institutional work, she maintains a legal practice, advising on white-collar crime, compliance and complex regulatory matters, and representing clients in interactions with public authorities.