John Mizerka

John Mizerka has extensive experience in maintenance and engineering, currently serving as the Complex Maintenance Manager at Greif, Inc. since July 2021. Prior to this role, Mizerka worked at Ecolab for over 17 years, where responsibilities included positions as Production Engineer and Maintenance Planner. Mizerka's career at Ecolab began in 1999 as a Facilities Mechanic, showcasing a progressive development in skills and responsibilities within the maintenance field.