Jennifer O’Brien

Jennifer O’Brien

Partner Mergers & Acquisitions Chicago


Jennifer relishes opportunities to use technology to solve business problems and deliver tangible top- and bottom-line impact—and she has a track record to back up her passion. She implemented a new pricing solution for a large retailer that targeted a $40 million annual margin benefit by improving price margins and establishing stronger pricing governance. She built a platform for a medical device manufacturer to support a new product line that has generated more than $1 billion in revenue. She also helped a product company introduce consulting services, driving a revenue increase in excess of 30%.  

Jennifer credits her success to her highly collaborative style: She's adept at bringing together multiple disciplines, complementary points of view, and diverse skills to deliver great work. 

She possesses a growth mindset and well-rounded background that spans delivery and project management, account management, and practice development—as well as experience working with leaders across the healthcare and life sciences, consumer products, retail, and high-tech sectors.  

She joined West Monroe from HCL Technologies, where she was a practice director for digital consulting. Her background includes both corporate and consulting roles. She earned a bachelor’s degree from Cornell University.

What makes Jennifer different

In her spare time, she enjoys hiking and trail-running with her two dogs near her home in Boulder, Colorado, as well as traveling, exploring, and supporting her kids in their athletic and other pursuits. She holds a diploma in wine and spirts and is a Level 1 sommelier.

Where Jennifer makes an impact

She chairs and is a member of the Cornell University Alumni Admissions Ambassador Network. She is also the chief financial officer of a local high school lacrosse organization and has supported various local education and sports organizations over the past 15 years. 

Meet the Mergers & Acquisitions team