The OR 2025 is an opportunity for academics, researchers and practitioners to discuss methods and applications of Operations Research, management science, data science and analytics. How can quantitative methods help to find solutions to problems in a closely networked world? This often requires interdisciplinary approaches typical of Operations Research applications.
Gurobi is proud to participate as a Gold Sponsor at OR 2025. As leaders in mathematical optimization, we are keen to share our latest advancements and insights. Visit our booth and attend our expert-led sessions.
Our team will be presenting the following topics:
Additionally, we will also be sponsoring this year’s prestigious PhD Prize.
Principal Developer
Gurobi Optimization
Principal Developer
Gurobi Optimization
Dr. Luce is an experienced researcher in applied mathematics, and author of numerous publications in the fields of numerical linear algebra and optimization. He holds a Ph.D. from Technical University of Berlin.
Senior Director of Technical Account Management
Gurobi Optimization
Senior Director of Technical Account Management
Gurobi Optimization
Dr. Kostja Siefen leads the global Technical Account Management team at Gurobi Optimization. Kostja holds a Ph.D. in Operations Research from the University of Paderborn (Germany). He joined Gurobi in 2015 after many years of experience in the development and design of decision support systems using mathematical optimization. Before joining Gurobi he worked at Daimler Research & Development and as a lecturer at the University of Paderborn. Since 1998, before focusing on optimization and during his studies he continuously worked as system administrator, software developer and support engineer for an IT service company. Kostja has been active in academic teaching and customer training since 2009. Beyond Gurobi, Kostja enjoys spending time with his family, working as a Les Mills group fitness instructor, traveling and good food.
Optimization Engineer
Gurobi
Optimization Engineer
Gurobi
Christine holds a PhD in Economics and Management Sciences from the university of Liège (Belgium), where her work focused on network pricing and design optimization problems for logistics applications, through extending game theoritic models and designing approximate solution algorithms. Prior to Gurobi, Christine had an academic experience through her postdoctoral work at Zuse institute Berlin, where she led the „sustainable energy planning“ research group, supervising MSc and Phd theses, acquiring research grants and handling collaborations within the district heating sector. She later switched to the steelmaking making industry, where she had the opportunity to collect both a consultancy and professional software development experience for nearly two years. Outside of work, she enjoys being outdoor, travelling, reading and learning new artistic craft skills.
Vice President of Support
Gurobi Optimization
Vice President of Support
Gurobi Optimization
Dr. Mars has been with Gurobi since 2013 and manages the Optimization Technical Support Team. She did her PhD at the University of Erlangen-Nuremberg in Germany about solving Mixed-Integer Semidefinite Programs. Prior to Gurobi she was working as a journalist for a local newspaper and at the University in Darmstadt in a Collaborative Research Center about controlling uncertainty in load-carrying structures. Sonja loves to play board games with her husband and her two kids. She is also committed to local politics in her home town.
Principal Developer
Gurobi Optimization
Principal Developer
Gurobi Optimization
Dr. Stefan Heinz studied mathematics at the Technical University of Berlin and did his Ph.D. at the Zuse Institute Berlin in the field of discrete optimization. At the Zuse Institute Berlin, he worked on the development of SCIP. The focus of his Ph.D. was in combining technics of constraint programming and mixed-integer programming in the field of project scheduling. From 2013 to 2019 Dr. Heinz worked for FICO as a developer of the Xpress Optimizer. In July 2019 he joined the development team of Gurobi.
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