Jeffery Sierra

Jeffery Sierra is an accomplished executive with extensive experience in eCommerce and technology. Currently serving as the Executive Vice President of eCommerce and Technology at Mad Engine Global, LLC since July 2021, Jeffery has previously held significant roles, including Vice President of eCommerce at Fifth Sun, which was acquired by Mad Engine. Prior experience includes co-owning Design By Humans, which was acquired by Fifth Sun, and founding Chico Web Design in 2004, eventually selling it in 2011. Early in Jeffery's career, a role as a Business Systems Analyst at Chevron involved overseeing quality assurance during a SAP ERP installation. Jeffery holds a Bachelor of Science in Management Information Systems from California State University, Chico.