Mario Gutierrez brings more than two decades of leadership experience in the solid waste industry, with a proven track record managing operations across key business areas, including sales, routing, hauling, post-collection and composting. He currently serves as vice president of post-collections process improvement at Athens Services, where he drives initiatives to enhance organizational development, improve operational efficiency and maximize material recovery.

Prior to joining Athens Services, Mario served as vice president of operations at Zero Waste Energy, a renewable energy firm that introduced dry anaerobic digestion technology to the U.S. market. He also served as director of operations at South San Francisco Scavenger Co., a privately held waste and recycling company. His primary focus has been on the design and implementation of advanced systems for anaerobic digestion, material recovery and organics processing.