In October 2020, I started as a PhD candidate, funded by NWO at the Operations Research section at the University of Amsterdam. Previously, I obtained a Master’s degree in Mathematics at the Radboud University and a Master’s degree in Business at Tilburg University. My research focuses on finding new methods to approximately solve hard minimization problems with concave parts in the objective and/or constraint functions. Such problems arise often in, e.g., logistics, where costs are concave functions due to economies of scale. An important test case is the optimal food supply-chain problem for the World Food Programme.