Dr. Kostja Siefen

Head of Global Technical Account Management

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.