Margaux Mathieu is a partner at DAEM, where she founded the criminal defense and litigation department.

She practices in all areas of criminal law (general criminal law, business criminal law) and is also an expert in labour law litigation and criminal labour law.

She trained with renowned criminal lawyers, Éric Dupond-Moretti and then Hervé Temime, gaining invaluable experience in the most complex cases involving high media exposure or high technical and financial stakes.

She regularly publishes in specialist journals and is a lecturer at the universities of Aix-Marseille and Paris La Sorbonne. She is also a trainer for french journalists (Le Monde, France Télévisions, Radio France), particularly on the issue of media coverage of criminal cases. She is the author of "Sambre, l'autre rive", a book defending criminal defense (Michalon ed., 2024).

Margaux collaborates with foreign colleagues on cross-border criminal cases, particularly in Italian and English, which she speaks fluently.

She is graduated with a degree in private law and criminal sciences (Paris X Nanterre ; Università Cattolica in Milan) and also studied at London School of Economics (LSE).