In 2000, he was appointed full professor in the Department of Mechanical Engineering at TU/e. He was a visiting scientist at EPFL in 2003 and at the Ecole des Mines de Paris in 2011.
Marc has published over 300 papers in international journals, with a significant citation impact (Web-of-Science h-index=51). In the past 10 years, he presented more than 15 plenary lectures at international conferences (e.g. ESMC, ECCOMAS, CFRAC, ECCM, GAMM,…) and over 50 keynote and invited lectures. Since 2019, he is the President of the European Mechanics Society EUROMECH.
He is Associate Editor of the European Journal of Mechanics A/Solids and serves on the Editorial Boards of more than 15 international journals. He is also serving the national and international community in other roles, e.g. as the scientific director of the Dutch Engineering Mechanics graduate school (2008-2017), as the chairman of the European Mechanics of Materials Conference committee (2007-2017), as a member of more than 50 scientific conference committees (past 10 years) and scientific evaluation panels (e.g. NWO, ERC). He is a member of the board of the Netherlands Mechanics Committee, Cluster coordinator of the cluster Multiscale fundamentals of materials and Program Committee member of M2i. He served on the Board of Governors of the Foundation for Fundamental Research on Matter (NWO-FOM) in the period 2009-2017.