He joined Fidal in 2008, after practicing as a tax attorney in several Anglo-Saxon law firms. Guillaume was appointed Regional Director in 2016.
In this capacity, together with Hugues Dubois, he represents the firm in the Hauts-de-France region, manages a team of 175 professionals and creates the conditions conducive to their success, for the benefit of the clients’ development and in accordance with the firm’s values.
Guillaume teaches Tax Law at Science Po Lille.
He is a member of various business networks active in the Hauts-de-France region.