Since September 2023, Mathilde has been associated with the Dutch-speaking Bar Association of the Brussels Bar. That same year, she joined the team of Claeys & Engels in Brussels, where she is active in various branches of labor law.

After obtaining her Master of Laws with distinction in 2022 from the Catholic University of Leuven, Mathilde further specialized in social law. This by completing the master-after-master 'Spécialisation en droit social' at the Université Libre de Bruxelles in 2023.