Marije Zomerdijk is a managing consultant at ORTEC Consulting and an expert on supply chain optimization. Marije leads the Oil, Gas and Chemicals Supply Chain Optimization team. Her focus areas are: refinery planning and scheduling, blending optimization, site logistics and network optimization, supporting both strategic and operational decision making processes. Marije has experience in the LNG market were she supports strategic investment decisions and operational scheduling processes with mathematical models and consultancy.