Jack serves as Chair of the Board of Directors of Peacemaker Ministries. He is the founder of Buying Excellence® and the author of Amazon #1 Bestseller “How Smart Companies Save Money.” Over the last 15 years, Jack has helped dozens of organizations make better buying decisions and save tens of millions of dollars. As Director of Corporate Procurement at Sallie Mae, Jack led sourcing initiatives for software, services, and credit reports. As a co-founder and VP of Invoice Insight (later renamed Xigo), Jack implemented software and outsourced solutions with Fortune 500 and government clients. Jack started the first Convene Christian CEO group in the Washington, DC area and served as chair for two years. Jack is a Northern Virginia lifer, apart from college at Yale and graduate school at Northwestern’s Kellogg School of Business. He and his wife, Linda, have been members of Open Door Presbyterian Church for over a decade, where they have served on the finance team and lead small groups and biblical stewardship classes. Their home is full of music and laughter from two joyful daughters. Jack enjoys playing basketball and guitar.