With more than 25 years of experience, Mr. O’Brien has driven performance improvement in a variety of industries, including insurance, manufacturing, consumer products and retail. He currently leads the relationship with Cardinal Health, where A&M has completed over 20 projects. Other clients include BBA Aviation, Hamilton Sundstrand, UCI-FRAM, Zebra Technologies, Pitney Bowe’s, Lowe’s, Lexmark, Best Buy, Ralcorp, Sysco Foods, Nationwide, Kemper, Country Financial, Reynolds Packaging Group, Pactiv, Graham Packaging and NiSource. 

Prior to joining A&M, Mr. O’Brien spent five years as Managing Director at BearingPoint, where he led the National Strategic Sourcing practice and was head of the 600-person Chicago office. He also led the Allstate account for four years, where he completed more than 50 projects and built a Central Region Insurance practice. Mr. O’Brien began his career at Andersen Business Consulting in 1990 and became a Partner in 2001. 

Mr. O’Brien earned a bachelor's degree in finance from the University of Illinois at Urbana-Champaign and an MBA from the University of Chicago Booth School of Business. He has been both a Certified Public Accountant (CPA) and a Certified Purchasing Manager.