At Randstad, we are delighted to partner with a leading provider in the water safety and treatment sector to recruit a highly skilled Senior Service Chemist. As an established recruitment partner, we are looking for a true technical authority-someone who doesn''t just check water parameters, but understands the intricate chemistry behind closed systems, cooling towers, and steam boilers to protect client assets and ensure total compliance.Location: Field-Based, Regional and National TravelDepartment: Water Hygiene / Water TreatmentReporting to: Operations Manager (Water)Position Type: Full-TimeThis is a high-impact, technical lead position. You will oversee the chemical control, risk mitigation, and continuous improvement for a diverse portfolio of commercial, industrial, and public sector clients. Balancing hands-on technical analysis with strategic client advisory, you will act as the go-to expert for complex water regimes while mentoring the next generation of engineers and technicians on site.Key ResponsibilitiesUndertake chemical analysis, system monitoring, and dosing adjustments for cooling towers, steam boilers, evaporative systems, and closed heating/chilled systems.Ensure all site operations strictly align with ACOP L8 and HSG274 guidance. Support the implementation of Legionella control measures, Written Schemes of Control, and meticulous site logbooks.Act as the technical lead for client accounts, delivering practical recommendations for system efficiency, ..... full job details .....