Margarita Protopappa-Sieke

Research focuses

Supply Chain Management, Supply Chain Digital Transformation, Behavioral, Supply Chain Strategy

Since 2026 Professor at the Department of Operations Management Faculty of Management, Economics and Social Sciences University of Cologne, Germany
2025-2026 Principal at OBI, Germany
2018-2025 Senior Expert at the Manufacturing & Supply Chain Practice, McKinsey & Co., Germany
2016-2018 Professor at the Department of Supply Chain Management and Management Science Faculty of Management, Economics and Social Sciences University of Cologne, Germany
2012-2016 Assistant Professor at the Department of Supply Chain Management and Management Science Faculty of Management, Economics and Social Sciences University of Cologne, Germany
2009 - 2012 Assistant Professor at the Supply Chain Management Institute SMI, EBS University for Business and Law, Wiesbaden, Germany
2005 - 2009 Doctoral student and research assistant at École Polytechnique Fédéral de Lausanne, Lausanne, Switzerland
2003 - 2004 Master in Industrial Systems Engineering, Georgia Institute of Technology, Atlanta, USA
1998 - 2003 Diploma in Production Engineering and Management (Honors), Technical University of Crete, Chania, Greece

Runner's up best working paper award, from INFORMS BOM, Seattle, USA, 2019
Excellence in Undergraduate Studies, from the Greek State Scholarships Foundation and the Technical Chamber of Greece, 1998-2003
For excellence (1st place) in Greek National University Entrance Examinations, from the Greek State Scholarships Foundation and the Technical Chamber of Greece, 1998

H. Olbert, M. Protopappa-Sieke, U.W. Thonemann, Analyzing the Effect of Express Orders on Supply Chain Costs and Delivery Times, Production and Operations Management, 2016, Accepted.
M. Protopappa-Sieke, M. Sieke, U.W. Thonemann, Optimal Two-Period Inventory Allocation under Multiple Service Level Contracts, European Journal of Operational Research, 2016, Vol. 252, Issue 1, pp. 145-155.
D. Seifert, R. W. Seifert and M. Protopappa-Sieke, A review of trade credit literature: Opportunities for research in operations, European Journal of Operational Research, 2013, Vol. 231, Issue 2, pp. 245-256.