Leo A.M. van Dongen (1954) has worked for the Netherlands Railways for 35 years. He retired as Chief Technology Officer, responsible for the asset management of the rolling stock fleet, workshops and maintenance equipment, in August 2019. Since 2010 he is professor in Maintenance Engineering at the faculty of Engineering Technology, in the Department of Design, Production and Management of the University of Twente. He is mechanical engineer and completed his doctoral research at Eindhoven University of Technology on energy efficiency of drive trains for electric vehicles.