Prof. Dr. Olivier Vassart has been working at ArcelorMittal since 2002 when he joined the R&D team in Luxembourg. He held several roles in ArcelorMittal Global R&D, specifically in the field of applied construction research and development. In 2015, he joined the leadership team of ArcelorMittal Global R&D, taking the responsibility for the portfolio dedicated to construction, infrastructures and Long Products. Since November 2018, Olivier Vassart is the CEO of Steligence®, the new Business division of ArcelorMittal devoted to Construction solutions. In addition to his activities with ArcelorMittal, he is Professor of Steel, composite construction and Fire Engineering at the University Catholic of Louvain in Belgium. Olivier Vassart is a graduate in civil engineering in construction and environment, and holds a PhD in structural fire engineering.