This is a full-time PhD position (typically 4-year contract) within the Industrial Engineering and Management Sciences (IEMS) section of the High-tech Business & Entrepreneurship (HBE) department at the University of Twente. The PhD is part of the MULTIPLIER project, a large interdisciplinary research initiative addressing the logistics challenges of scaling prefabricated modular housing while reducing emissions through optimized multimodal transport, especially using inland waterway transport. Fields: Industrial Engineering, Operations Research, Optimization, AI-Driven Decision Support, Transport & Logistics, Simulation, Data-Driven Modelling. The project aims to develop real-time optimization and hybrid AI models that link prefab factory production, inland shipping capacity, terminals, and urban delivery constraints under uncertainty. The candidate will design synchronization and consolidation algorithms and build explainable decision support tools while collaborating with a multi-actor consortium including logistics partners and municipalities.