• Associate Professor of Business Administration, Elmhurst College, Elmhurst, IL. March 2008-present
  
• Assistant Professor of Business Administration, Elmhurst College, Elmhurst, IL. August 2003-March 2008
  
• Sr. Product Planning and Marketing Manager, Tellabs, Inc. 2000 – 2003.
  
• Adjunct Faculty, Graduate Program in Supply Chain Management, College of Business and Economics, Elmhurst College, IL. Fall 2002 – 2003.
  
• Sr. Consultant, Supply Chain Management Group, KPMG Consulting. 1998.
  
• Adjunct Faculty, MBA Programs, Benedictine University, Lisle, IL 60532.
  
• President, GVS Associates, Inc., Naperville, IL. 1998-present.
  
• Staff Engineer, Tellabs, Inc. 1993-1998.
  
• Sr. Consultant and Manager, ZS Associates, Evanston, IL.  1989-1993.
  
• Lecturer, Department of Industrial Engineering and Management Sciences, Northwestern University, 1985-1988, (term appointments).