At the Gates Foundation, Carl operates broadly across investments in the WSH Program Strategy but specializes in technology discovery and development for the Transformative Technology initiative. Carl also spends time building cross-strategy relationships with other internal and external strategic partners and is especially interested in bringing innovation and atypical knowledge experts into the sanitation sector.

Before joining the foundation in 2012, Carl was an Energy Program Manager for King County, WA, focusing on resource recovery in the Wastewater Treatment Division; Chief Technology Officer for Asemblon a start-up developing energy storage technology; Chief Scientist/Engineer, Principal, Director and owner of Frontier Geosciences Inc. where he focused on remediation and mitigation of environmental contamination. Carl was also an employee for DowElanco, Exxon and British Coal. He has also been an Adjunct Faculty member at Clemson University, served on the National Coal Council, and the NCC Coal Policies Board.