Gillian Nassisi is a trainee lawyer in the Litigation, Private Clients and Corporate & Commercial departments of Walder Wyss in Geneva.

Gillian Nassisi studied at the University of Fribourg, where he obtained a bilingual Bachelor in Law as well as in Philosophy in 2017. He obtained a Master in Law and Economics at HEC Lausanne (summa cum laude) in 2020, and then obtained the Certificate of Advanced Legal Studies (Ecole d'avocature) at the University of Geneva in 2021. He completed the final semester of his Master at the Luiss Guido Carli University in Rome. During his Bachelor, Gillian Nassisi represented the University of Fribourg at the René Cassin moot court competition in Strasbourg, where he and his team reached the semi-finals. In parallel to his studies, Gillian Nassisi worked for several years as a law clerk of the Criminal and Labour Chambers of the District Court of La Côte. Prior to joining Walder Wyss, he worked as a trainee at the Office of the Attorney General of Switzerland (OAG) in the White-Collar Crime Division in Bern, which is in charge of the criminal prosecution of serious international crime in the areas of organized crime, money laundering, corruption and other economic offences, as well as in international mutual legal assistance procedures.

He works in French and English. Gillian Nassisi also has a good command of German, and basic knowledge of Italian.