Position: Head of Maintenance / Asset Manager Location : Oxfordshire (Supporting Oxfordshire, Northamptonshire & Hampshire) Guide Salary: £60,000 - £70,000 Plus Car Allowance & Bonus Our client is a leading UK-based renewable energy company specializing in the production of biomethane through anaerobic digestion. By partnering closely with local farmers, they convert agricultural and organic waste into clean, green energy while generating valuable by-products such as nutrient-rich bio-fertiliser and high-purity green CO2. This closed-loop approach supports sustainable agriculture, drives rural economic development, and advances the circular economy. With several projects already under development across the United Kingdom, their ambition is to become the countrys leading producer of biomethane and to supply up to 25% of the UKs total output. In doing so, it plays a key role in supporting the Governments target to quadruple biomethane production by 2030-2035 and in delivering long-term value for local communities while accelerating the UKs transition to net zero. Role Profile: The Maintenance Manager is responsible for the safe, reliable, and cost-effective operation and maintenance of a portfolio of renewable gas assets, including CHPSs, biogas upgrading systems, CO2 capture plants and biomethane virtual pipeline infrastructure. The role ensures maximum asset availability, regulatory compliance and performance optimisation across multiple sites through structured maintenance systems, technical leadership, and contractor management. This position combines hands-on technical oversight with strategic planning, reliability engineering, and HSE leadership in a distributed, process-driven environment that supports new plant commissioning activities, ramp-up and handover of new downstream systems into operations. Key Responsibilities: Produce and develop Asset Reliability & Maintenance Strategy Develop and implement preventive, predictive, and corrective maintenance programmes for: Biogas upgrading plants. Industrial pressure reduction systems. CNG virtual pipeline trailer loading / discharging infrastructure. CO2 capture, liquefaction, and handling equipment Compression, storage, and loading systems for biomethane virtual pipeline operations Drive asset reliability initiatives using root cause analysis and FMEA.Monitor plant performance and downtime trends to increase uptime and throughput. Take ownership of the company CMMS and its implementation across future projects. Provide technical support to site operations teams to ensure safe and efficient plant operation. Work with Plant Managers to coordinate planned shutdowns, inspections, and major maintenance activities across the portfolio. Manage third-party service providers, OEMs, and specialist contractors. Ensure that SLA obligations and performance expectations are being met. Manage critical spare parts stock and inventory. Ensure all maintenance activities are carried out in full compliance with HSE regulations, environmental permits, and company safety policies. Own the performance, availability and optimisation of all mechanical infrastructure. Maintenance and testing of all safety critical equipment Provide operational input into plant modifications, upgrades, and optimisation projects. Lead, coach, and develop site based mechanical engineers and operational teams. Ensure contracts / SLAs are effectively managed with clear KPIs and performance accountability. Skills, Qualifications & experience: Experience in industrial maintenance, ideally within Biogas/Biomethane plants, CHPs, Gas processing or upgrading, energy from waste or anaerobic digestion, industrial gas, compression, or process plants. Demonstrated experience managing multi-site maintenance operations. Strong knowledge of gas treatment and upgrading systems, instrumentation and SCADA systems Knowledge of preventive/predictive maintenance methodologies Experience with CO2 capture, purification and liquefaction systems. Experience managing contractors and OEM relationships. Strong Health and Safety acumen. Proven experience operating process plants (AD, biogas, wastewater, chemicals, energy, or similar). Suitable level of Health and Safety, gas safe qualifications and competency such as NEBOSH / IOSH. Strong understanding of HSE and environmental compliance in the UK. Leadership and people management capability. Comfortable operating in a commercial, performance-driven environment.