He did his Ph.D. at the faculty of Technology, Policy and Management (TPM), Delft University of Technology (TU Delft). He has a background in Operations Research, and has published in several peer-reviewed journals. He is the Editor-in-Chief of Journal of Supply Chain Management Science. In 2015, he developed the Best Worst Method (BWM). His main research interests are freight transport modeling and analysis, supply chain partnership, supplier selection and segmentation, multi-objective and multi-criteria decision-making.