Field Service Engineer

Infinis Energy plc; Bristol; On-site; GBP 30,000 - GBP 40,000; Full time

Job summary

A leading renewable energy company in the UK seeks a Maintenance Technician to ensure the efficient operation of gas reciprocating engines. The role involves performing planned and reactive maintenance, conducting diagnostics, and managing inventory. The ideal candidate holds NVQ Level 3 in Electrical or Mechanical Engineering, is safety-conscious, and has strong fault-finding skills. This position offers a competitive salary, company van, and opportunities for continuous improvement in a collaborative environment.

Benefits

Competitive salary with up to 15% bonus

Company van and fuel card

Employee Assistance Program

Cycle-to-work scheme

25 days of annual leave plus bank holidays

Company pension scheme with 6% employer contribution

Qualifications

• Safety-conscious with a proactive approach to health and safety.
• Experience working on low-voltage electrical systems preferred.
• Ability to travel to sites across the South West region.

Responsibilities

• Perform preventive and reactive maintenance, ensuring safe operations.
• Conduct diagnostics and troubleshoot engine performance issues.
• Manage van stock inventory and maintain tools in safe working order.

Skills

Diagnostic and fault-finding skills

Safety-consciousness

Experience in power generation or industrial maintenance

Proactive approach to health and safety

Education

NVQ Level 3 or City & Guilds in Electrical or Mechanical Engineering

Tools

Field-based tools

Company van

Job description

Infinis is the UK’s leading renewable energy generator of low-carbon power from captured methane. We capture methane gas from landfill sites and disused mines and convert it into electricity. We are also developing a portfolio of solar farms and battery energy storage (BESS) technology.

This work helps reduce greenhouse gas emissions, which supports the transition to net zero. We’re driving innovation and environmental responsibility and are committed to creating safe, sustainable energy solutions for a greener future.

With demand for renewables continuing to rise, the energy sector offers an exciting opportunity to build a rewarding career on diverse, dynamic, large-scale projects.

About the role

Join our expert operations team and play a pivotal role in ensuring the safe, efficient, and reliable operations of our gas reciprocating engines and associated plant equipment. You will play a key role in identifying early signs of faults, conducting diagnostics, and carrying out both reactive and planned maintenance to minimise engine downtime across our range of site-based power generation plants. This ensures our fleet operates at peak performance, supporting the continuous delivery of flexible power generation.

Working in a collaborative, safety-first environment, you’ll contribute to operational excellence and innovation. Ideally, you’ll bring experience in power generation or industrial maintenance—particularly with gas reciprocating engines and demonstrate strong fault-finding skills and a proactive approach.

Location: This role will primarily serve sites between Bristol and Cheltenham, with some sites in South Wales. Monday–Friday, day shift only, with a call-out system (paid standby and call-out payments are made on a rotating basis). Additional voluntary standby opportunities are available.

During your 1/8 call-out week, you would cover sites in Warwickshire, Shropshire, Wiltshire and South Wales.

Key responsibilities

• Follow HSQE regulations, report incidents, and implement proactive safety measures to ensure a secure work environment
• Perform preventive, corrective, and reactive maintenance, including engine overhauls, to ensure the safe and efficient operation of our sites
• Conduct diagnostics and troubleshooting on assets experiencing recurring trips or performance challenges to prevent engine downtime or breakdowns
• Respond promptly to out-of-hours callouts, effectively diagnosing and restoring equipment functionality
• Ensure all tasks assigned by the Operations Performance Team are completed safely, efficiently, and to the highest standards
• Complete detailed service reports of site visits, ensuring compliance with company protocols
• Manage van stock inventory, book out parts used, and ensure tools remain calibrated and in safe working order
• Engage in a culture of continuous improvement, attending training courses and contributing to operational innovation

About you

• NVQ Level 3 or City & Guilds in Electrical or Mechanical Engineering, or apprentice-trained, demonstrating technical competence
• Safety-conscious with a proactive approach to health and safety
• Experience working on low-voltage electrical systems with an understanding of base load or power response would be beneficial
• Strong diagnostic and fault-finding skills
• Full UK manual driving license, preferably with field-based experience.
• Ability to travel to sites across the South West region

What we offer

• Competitive salary with up to 15% bonus, paid quarterly & annually
• Company van & fuel card, plus tools, uniform, laptop, and mobile phone
• Domestic solar, battery, and EV charger funding scheme
• Employee Assistance Program that offers virtual GP appointments
• Cycle-to-work scheme and eye care vouchers
• Community volunteering days to give back to the local area.
• 25 days of annual leave, plus bank holidays
• Company pension scheme with 6% employer contribution
• Sick pay eligibility after a qualifying period

We value diversity and inclusion, encouraging applications from underrepresented groups. We believe diverse teams develop better solutions. That’s why we actively encourage women engineers to apply and thrive in our inclusive, safety-first environment.