Multicraft Maintenance & Chemical Technician (Downstream Chemicals) – Joliet, IL

Manage and troubleshoot downstream chemical treatment programs that support refinery process, finished fuels, and water treatment. Design, assemble, install, and repair chemical metering injection systems and electro-mechanical assemblies, including PLC-controlled analyzers and automation skids. Handle chemical inventories, deliveries, sampling, and laboratory testing while monitoring program performance and coordinating improvements to apply chemicals and technologies in the field for a key customer account.