Field Service Engineer - South East Region

Infinis is the UK’s leading generator of low-carbon power from captured methane. Our mission is to create a low-carbon future by capturing methane gas from landfill sites and disused mines and converting it to electricity.

Our sustainable energy expertise includes solar power and battery energy storage (BESS) technology. This work helps reduce greenhouse gas emissions impact on climate change and provides secure, efficient local power generation. Low-carbon electricity generators like Infinis will support the UK's journey to net zero in several ways.

Join our highly skilled field-based operations team as a Field Service Engineer
. You’ll play a pivotal role in maintaining, troubleshooting, and optimising our natural gas reciprocating engines and associated plant equipment. Your expertise in identifying early warning signs of malfunctions, performing preventive maintenance, and carrying out comprehensive repairs will ensure our fleet operates at peak performance.

You must have a strong mechanical engineering background, ideally with experience in maintaining and repairing Jenbacher, Caterpillar, MTU, or MWM gas reciprocating engines.

• Perform preventive, corrective, and reactive maintenance
  , including engine overhauls, across a fleet of gas generation assets.
• Identify and proactively address early warning signs of operational issues or potential breakdowns.
• Conduct diagnostics and troubleshooting on assets experiencing recurring trips or performance challenges.
• 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.
• Maintain 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.
• Adhere to HSQE regulations
  , report incidents, and take proactive measures to prevent accidents or compliance breaches.
• Engage in a culture of continuous improvement
  , attending training courses and contributing to operational innovation.

This role will primarily serve sites between Aylesbury and Beaconsfield
. Schedule
:
Monday–Friday day shift with a call-out system (paid standby and call-out payments on a rota basis). Additional voluntary standby opportunities are available.

• Apprenticeship-trained engineer, mechanic, or NVQ Level 3 minimum

• Hands-on experience with Jenbacher, Caterpillar, MTU, or MWM gas engines
• Strong fault-finding, diagnostics, repairs and maintenance skills
• Background in a safety-driven industry
  , with a proactive approach to health and safety standards

• Full UK manual driving license
  , preferably with field-based experience
  .
• Ability to travel to sites across the South East region during the call-out week
• Comfortable working outdoors in all weather conditions
• Strong problem-solving, communication, and resilience skills
• Committed to strict environmental, health, safety, and quality procedures

• 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 Programme 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

At Infinis
, we are a leading low-carbon energy generator
, capturing methane from landfill sites and disused mines to produce electricity. Our flexible power response and battery energy storage projects support the grid, ensuring sustainability and resilience. With our expanding solar division
, we’re committed to investing in renewable energy solutions and driving a greener future.