Prof. Stephan Held received a Ph.D. degree in mathematics from the University of Bonn, Bonn, Germany.,From 2009 to 2010, he was a Post-Doctoral Fellow with the Georgia Institute of Technology, Atlanta, GA, USA. From 2010 to 2013, he was an Assistant Professor and since 2013, he has been an Associate Professor with the Research Institute for Discrete Mathematics, University of Bonn. His current research interests include combinatorial optimization and chip design.