• 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, 2014-2017
• Director, Initiative on the Sharing Economy, University of Minnesota, 2016-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
• Director, Center for Supply Chain Research, University of Minnesota, 2002-2014
• 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

Board Membership

• Member of the Board of Directors, Hourcar, 2017-present
• Advisor to the Qatar Foundation, 2017-present
• Member of the Technology Advisory Board, Keppel Corporation, Singapore, 2014-2016

Other Affiliations 

• Senior Faculty Scholar, Center for Transportation Studies, University of Minnesota, 2008-present
• Fellow, Institute on the Environment, University of Minnesota, 2016-present
• Faculty Affiliate, Digital Technology Center, University of Minnesota, 2017-present
• Faculty Affiliate, Institute of Mathematics and its Applications (IMA), University of Minnesota, 2017-present
• Member of the Graduate Faculty, Department of Civil Engineering, University of Minnesota, 2019-present

Visiting Appointments

• Affiliated Faculty, Singapore University of Technology and Design, 2014-2017
• Visiting Professor, Department of Management Sciences, Shanghai University of Finance and Economics, 2016
• Visiting Professor, Department of Management Sciences, City University of Hong Kong, 2009, 2011 and 2015
• Visiting Professor, Laboratoire Génie Industriel, Ecole Centrale Paris, France, 2003 and 2010-2014
• Guest Professor, School of Management, University of Science and Technology, Hefei, China, 2010-2013
• 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