Author of the “Manuel de data visualisation” published by Dunod, he accompanies professionals (graphic designers, communicators, journalists…) and students (at Sciences Po, CFJ…) in the development of their data design skills, and creates visualisations for his clients. After studying graphic arts, Jean-Marie worked at Ubisoft, then as head of the computer graphics department of Libération and in various agencies (Idé, Wag…) as an AD. He then created the Studio V2 collective, which he quickly transformed into an agency specialised in data design. In 2020, he sold his shares and became an independent data designer.