- Distinguished McKnight University Professor, University of Minnesota, 2011-present
- Head, Department of Industrial and Systems Engineering, University of Minnesota, 2018-present
- Founding Head of Pillar (at the rank of Dean) and Professor, Engineering Systems and Design, Singapore University of Technology and Design, 2011-2014
- Advisor to Singapore University of Technology and Design (SUTD) and Fellow of the MIT-SUTD Design Center, 2014-present
- Member of the Board of Directors, Hourcar, 2017-present
- Keppel Technology Advisory Board Member, Keppel Corporation, 2013-present
- Founding Director, Department of Industrial and Systems Engineering (formerly the Program in Industrial and System Engineering), University of Minnesota, 2008-2011
- Director, Program in Industrial and Systems Engineering (a Division of the Department of Mechanical Engineering), University of Minnesota, 1997-2008
- Professor, Department of Industrial and Systems Engineering (formerly the Program in Industrial and System Engineering), University of Minnesota, 2002-present
- Professor, Department of Mechanical Engineering, University of Minnesota, 2002-present
- Director, Initiative on the Sharing Economy, University of Minnesota, 2016-present
- Director, Center for Supply Chain Research, University of Minnesota, 2002-2014
- Faculty Scholar, Center for Transportation Studies, University of Minnesota, 2008-present
- Co-Director, Manufacturing Systems Engineering Program, 1999-2002
- Associate Professor, Department of Mechanical Engineering, University of Minnesota, 1997-2002
- Nelson Assistant Professor, Department of Mechanical Engineering, University of Minnesota, 1992-1997
Visiting Appointments
- Guest Professor, School of Management, University of Science and Technology, Hefei, China, 2010-2013
- Visiting Professor, Department of Management Sciences, City University of Hong Kong, 2009, 2011 & 2015
- Visiting Professor, Laboratoire Génie Industriel, Ecole Centrale Paris, France, 2003 & 2010-2014
- Visiting Professor, School of Management, University of Science and Technology, Hefei, China, 2009
- Visiting Professor, Business School, Hong Kong University of Science and Technology, 2008
- Visiting Fellow, Faculty of Applied Economics, Katholieke Universiteit Leuven, Belgium, 2007
- Visiting Fellow, Logistics Institute-Asia Pacific, National University of Singapore, 2005
- Visiting Professor, Department of Industrial Engineering and Engineering Management, Hong Kong University of Science and Technology, 2004
- Distinguished Visiting Senior Scientist, Honeywell Laboratories, Minneapolis, Minnesota, 2002
