KOÇ UNIVERSITY, İstanbul, Turkey                                                                                                      2001-Present

Professor, Department of Industrial Engineering

UNIVERSITY OF PENNSYLVANIA, Philadelphia, Pennsylvania, USA                             2010-2011, Summer 2017

Visiting Professor, Operations and Information Management Department

EURANDOM, Technical University of Eindhoven (TUE), The Netherlands                                 1999-2001

Research Fellow, Stochastic Networks Group

ERASMUS UNIVERSITY, Rotterdam, The Netherlands                                                                          Fall 2000

Instructor, Rotterdam School of Economics