This engineer will partner closely with Production Engineering, Production, Quality, Metrology, Environmental Health & Safety, Supply Chain, Facilities, Maintenance, and external suppliers to ensure robust, safe, and controlled chemical processes supporting world-class optics manufacturing. This role is responsible for the development, control, qualification, and continuous improvement of coolant systems, polishing slurries, filtration practices, and fluid management processes that directly impact product quality, equipment performance, surface finish, and manufacturing efficiency.