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Andrzej Sieminski is a seasoned procurement professional with extensive experience in the field, currently serving as the Category Manager for Bulk Materials Distributors at Shell since June 2015. Andrzej's expertise includes developing and implementing procurement strategies, building end-to-end supply chains, and engaging with senior stakeholders. Prior roles include Contracting and Procurement Lead, where Andrzej focused on negotiations and strategy development for Business Consulting categories, and Senior Buyer, responsible for contract management and vendor collaboration. Andrzej's earlier experience includes work at Tesco Polska as a Buyer in Fresh Food and as a Buyer Assistant at Nexteer Automotive. Andrzej holds a Bachelor's degree and a Master's degree in International Business from Krakow University of Economics.