Greg holds a Bachelor's degree in Systems Science and Mathematics from Washington University in St. Louis. He founded G. A. Sullivan which became a leading software development company in 1982. After managing the company's growth to 350 employees across the U.S. and Europe in 20 cars. he sold the company to Avanade, Inc., a company jointly owned by Microsoft and Accenture.
G. A. Sullivan appeared for four consecutive years among the Deloitte & Touche list of fastest growing technology companies in America. Ernst & Young named Greg the 2000 Entrepreneur of the Year in the Software and IT category. He is recognized as an industry expert and visionary in the field of information technology. The U.S. Small Business Administration named Greg the 1999 National Small Business Person of the Year.