Leonid is admitted to practice in Switzerland, Germany, and (expected in 2026) England & Wales. He has more than 10 years of extensive experience advising corporations, sovereign states, private equity and venture capital funds, and high-net-worth individuals on resolving complex disputes. His expertise spans commercial and investment arbitration, data protection, and regulatory matters, with a particular focus on sectors including energy, construction, post-M&A, gaming, sports, and esports. Leonid represents clients in both state-court litigation and international arbitration, including ICSID, ICC, SAC, SIAC, DIS, and ad hoc proceedings. He has acted as counsel, arbitrator, and secretary of the Tribunal in high-stakes cases across Europe, Asia, and beyond.

Leonid has a notable track record in international disputes, including representing European energy companies in high-value gas pricing disputes and advising states and investors in investor-State arbitrations. He also has significant experience in sports arbitrations, currently serving as a judge of the Swiss Sports Tribunal.

Leonid is currently a Ph.D. candidate in Public International Law at Heinrich-Heine-University Düsseldorf and completed his LL.M. studies at the Instituto Superior de Derecho y Economía (ISDE) in Madrid as well as at the University of Valais (FernUni Schweiz).

Leonid regularly lectures at prominent institutions, including Queen Mary University of London and Yaroslav Mudryi National Law University. He is also one of the founders of the NGO “United for Ukraine,” which was shortlisted for the Financial Times Innovative Lawyers’ Award in 2023 in the category of “Legal Department: Innovation in Operational Efficiency,” recognising
its exceptional work in this area. Leonid is also a founding member of various esports initiatives and a legal advisor to esports clubs and federations.

Leonid has been consistently recognised as a rising star in the legal field, being listed among the Lexology Index (formerly Who‘s Who Legal) Future Leaders in Arbitration and recommended by Legal500 for his expertise in international arbitration, dispute resolution, and sports arbitrations.