Senior Maintenance & Reliability Manager — COMAH Site

Colonial Group; Barry; Remote; GBP 75,000 - 110,000; Full time

Job summary

Colonial Group in the United Kingdom is seeking a Maintenance Manager to lead the maintenance, reliability and project delivery function for an upper tier COMAH chemical manufacturing site. You will ensure asset integrity, regulatory compliance, and safe, reliable plant performance while delivering OPEX projects and supporting CAPEX initiatives, embedding robust engineering standards.

The role requires strong leadership, people skills and the ability to manage contractors, regulators and

Qualifications

• Degree (BEng/BSc) in Mechanical, Electrical, or Control/Instrumentation Engineering or the equivalent relevant experience.
• Demonstrable experience (5+ years) in maintenance/reliability and project delivery within chemical or process industries.
• Upper Tier COMAH site experience with proven maintenance management leadership.
• Strong knowledge of UK regulatory frameworks: COMAH, DSEAR/ATEX, PUWER, LOLER, PSSR, Confined Space, Functional Safety (IEC 61511), EAWR.

Responsibilities

• Own the site maintenance strategy (preventive, predictive, and corrective) and reliability programs.
• Maintain mechanical, electrical, instrumentation, and control assets to high availability and integrity.
• Implement reliability-centred maintenance (RCM) and FMEA to reduce downtime.
• Oversee spares strategy, obsolescence plans, and CMMS usage (work management, planning, KPI reporting).
• Lead safety and COMAH compliance activities, including PHA participation and permits.
• Manage CAPEX/OPEX project delivery from scope through commissioning and handover.
• Lead a multi-disciplinary maintenance team and manage contractors/vendors to agreed standards.
• Drive continuous improvement for maintenance execution, data analytics and energy performance.

Job description

Colonial Group in the United Kingdom is seeking a Maintenance Manager to lead the maintenance, reliability and project delivery function for an upper tier COMAH chemical manufacturing site. You will ensure asset integrity, regulatory compliance, and safe, reliable plant performance while delivering OPEX projects and supporting CAPEX initiatives, embedding robust engineering standards.

The role requires strong leadership, people skills and the ability to manage contractors, regulators and