Marc Boulon was professor and then professor emeritus at the Université Joseph Fourier, now Université Grenoble Alpes, where he spent his career. He has taught aspects of mechanics (rational, material resistance, soils, rocks, numerical modelling), co-organized advanced training courses for geotechnical engineers. His research, at Laboratoire 3SR, often in partnership with French or foreign laboratories, focused on hydro-mechanical constitutive and numerical modelling, applied to structures involving static or cyclic contact between geo-materials. In particular, pile foundations, rock-dam contact, tunnels, underground storage containment are treated. He has supervised nearly 50 theses, published about 100 articles in international scientific journals, presented numerous papers at international conferences, and has himself organized international conferences. He co-produced the monograph "Mechanics of Geomaterial Interfaces", he is a member of French and foreign learned societies.