David Glijer holds an engineering degree and a PhD in physics from École Polytechnique (IP Paris). He worked in various companies and research centres in France and abroad before joining the ArcelorMittal group. Within the group, he held various positions in R&D, in the European Technical Department and in production site management before becoming Support CEO and Chief Digital Officer for ArcelorMittal France. With over ten years of experience in the technical and technological fields, with complementary skills in management and finance, he has received several awards for his work and participated in patents and new developments at ArcelorMittal in the technical sector.