Since 2007

Professor (W3) for Mathematical Optimization at Otto-von-Guericke Universität Magdeburg

2006

Visiting Professor at TU Berlin

2003-2006

Privatdozent at TU Berlin

2005-2006

Deputy head of the Department for Optimization at Zuse-Institute Berlin (ZIB)

2003-2004

Head of the Junior Research Group Optimization at the DFG Research Center MATHEON, Berlin

2003-2004

Member of the Executive Board of the DFG Research Center MATHEON, Berlin

2005-2006

Scientist in Charge for Application Area B Logistics, Traffic and Telecommunication Networks of the DFG Research Center MATHEON, Berlin

2003

Visitor at the Mathematical Sciences Research Institute (MSRI), Berkeley (October-November)

1999-2003

Researcher (Wissenschaftlicher Mitarbeiter) at TU Berlin (with Günter M. Ziegler)

2002

Habilitation (Mathematics) at TU Berlin

1993-1999

Researcher (Wissenschaftlicher Mitarbeiter) at Universität zu Köln (with Michael Jünger)

1997

Doctoral Degree (Dr. rer. nat.) at Universität zu Köln (Supervisor: Michael Jünger, Thesis: Polyhedral Combinatorics of the Quadratic Assignment Problem)

1993

Diploma (Mathematics) at Universität zu Köln (Supervisor: Michael Jünger, Thesis: Delaunay-Triangulierungen in verschiedenen Metriken)

1989-1993

Student of Mathematics and Computer Science, Universität zu Köln