Greg is the Senior Director of PayStream Advisors, where he is responsible for overall management of PayStream, including managing staff and operations, as well as relationships with vendors and corporate clients. Greg is also a Director in Levvel’s Payments Practice where he leads client engagements and builds relationships with customers ranging from top-10 banks to start-ups. Prior to Levvel, Greg spent 7 years at Bank of America, most recently leading business-efforts in the emerging payments team, leading the launches of Apple Pay, Android Pay and Samsung Pay. Prior to Bank of America, Greg held a variety of financial services roles at eSpeed / Cantor Fitzgerald and Reuters. Greg holds an M.B.A. from the Darden School at the University of Virginia and a B.S. from the College of William and Mary and resides in Charlotte, NC with his wife and three children.
As the VP of Product Marketing at Determine, Mr. Limberakis is focused on strategic efforts for creating brand awareness and promoting new ideas around the evolution of contract management and supplier management. With over fifteen years of experience in the enterprise software industry and a SDCE “Pros to Know” in 2013 and 2015, he’s held various roles in sales, marketing, market research, and product development. His most recent positions included Director of Sales Enablement within IASTA, Director of Marketing at HICX Solutions, Senior Research Analyst at the Aberdeen Group and Director of Business Development at The Shelby Group. During his career, Constantine has published several articles for learned journals including CIO UK, CFO.com, Supply Chain Brain, Supply & Demand Chain Executive, and Today’s General Counsel. Constantine holds a BA in History / Economics from the University of Illinois at Urbana-Champaign, and an MBA from the Joseph M. Katz Graduate School of Business and a Masters in Public & International Affairs from the University of Pittsburgh.