Jack Quarles is a speaker, trainer, consultant, and author of Amazon #1 bestsellers How Smart Companies Save Money and Same Side Selling, as well as his latest, <a href="https://www.amazon.com/Expensive-Sentences-Debunking-Decisions-Sabotage/dp/1940858259" target="_blank">Expensive Sentences: Debunking the Common Myths that Derail Decisions and Sabotage Success</a>.

During his career, he has saved companies tens of millions of dollars over two decades in the field of expense management. As Director of Corporate Procurement at Sallie Mae, Jack led sourcing initiatives for software, services, and information central to the company’s core business. As a founding principal of Invoice Insight (later renamed Xigo), Jack implemented software and BPO solutions with Fortune 500, federal, and state government clients. He has worked on cost reduction project teams with Accenture, Bridge Strategy, Mercer Management Consulting, and McKinsey.

Jack also serves on two non-profit boards, and received degrees from Yale and Northwestern’s Kellogg School of Business.