Battery Energy Storage System (BESS) O&M Service Engineer

Hyosung UK; Oxford; On-site; GBP 40,000 - 65,000; Full time

Benefits offered by this job

Competitive salary

25 days leave

Flexible Working

Private Medical Insurance

Pension contributions

Car allowance

Job summary

RGIT Australia seeks an experienced Battery Energy Storage System (BESS) O&M Service Engineer for UK BESS projects, based in Oxfordshire. The role emphasizes operation, maintenance, troubleshooting and performance optimization of utility-scale storage systems, with a mix of field work and some home-office duties.

The ideal candidate has a strong Renewable Energy Systems background with proven O&M/maintenance experience, and relevant knowledge of Battery systems and PCS equipment is highly

Qualifications

• Solid experience with the operation and maintenance of Renewables or Power Sector industry.
• Degree or equivalent qualification in a relevant engineering discipline.
• Strong understanding and training on LV systems, Inverters, Energy Management Systems and Batteries.
• Full UK driving licence and willingness to travel to sites in UK.

Responsibilities

• Conduct and support routine preventive and corrective maintenance of Battery Storage Systems and associated infrastructure.
• Carrying out remote operations as part of the corrective or preventive maintenance requirements.
• Perform remote and site inspections and diagnostics using tools and test equipment.
• Ensure adherence to site-specific Health and Safety standards and regulations.
• Supervision of subcontractors and ensuring quality and compliance of third-party works.
• Provide support during commissioning, upgrades and major repairs.
• Review Maintenance documentation and manuals and provide support in drafting maintenance reports and Methods of Statement.
• Cooperating with LTSA management and H&S to draft and review H&S documentation, RAMS and other relevant procedures.
• Support management team in communication with OEM suppliers for Maintenance procedures and relevant clarifications.
• Support in drafting the annual plan of the BESS projects
• On-Call support for urgent site issues outside of normal working hours.

Skills

Renewable energy systems

Operations & maintenance

Troubleshooting

Education

Engineering degree

Tools

LV systems

Inverters

Energy Management Systems

Batteries

Job description

Battery Energy Storage System (BESS) O&M Service Engineer

Oxfordshire, SouthEast OX1, United Kingdom

Full-time Permanent Mid-level Senior

Posted 18 Aug 2026

Description

Summary:

We are currently looking to recruit an experienced BESS O&M Service Engineer for our UK BESS Projects.

The focus of the role is around the operation and maintenance, troubleshooting and performance optimization of utility-scale Battery Energy Storage Systems whilst being technically minded around installations and utility connections. The work will mainly cover BESS project and field work, but also home-office working, ensuring the safe and efficient system operation in line with contract obligations. This also includes reviewing technical maintenance documentation and drawings, supporting in planning activities and emergency corrective maintenance support.

This is an exciting opportunity for a motivated individual to play a key role in ensuring the reliable operations and optimal performance of BESS projects, while joining a successful company currently undergoing a significant growth phase in the energy transition sector.

The candidate will need to be motivated and have a strong technical background in Renewable Energy Systems with a proven track record in Operations and Maintenance. A candidate who has experience and training on Battery systems and PCS specific equipment will be highly advantageous.

Responsibilities:

• Conduct and support routine preventive and corrective maintenance of Battery Storage Systems and associated infrastructure.
• Carrying out remote operations as part of the corrective or preventive maintenance requirements.
• Perform remote and site inspections and diagnostics using tools and test equipment.
• Ensure adherence to site-specific Health and Safety standards and regulations
• Supervision of subcontractors and ensuring quality and compliance of third-party works
• Provide support during commissioning, upgrades and major repairs.
• Review Maintenance documentation and manuals and provide support in drafting maintenance reports and Methods of Statement.
• Cooperating with LTSA management and H&S to draft and review H&S documentation, RAMS and other relevant procedures.
• Support management team in communication with OEM suppliers for Maintenance procedures and relevant clarifications.
• Support in drafting the annual plan of the BESS projects
• On-Call support for urgent site issues outside of normal working hours.
• Support in drafting the annual plan of the BESS projects
• On-Call support for urgent site issues outside of normal working hours.

Requirements:

• Solid experience with the operation and maintenance of, Renewables or Power Sector industry.
• Degree or equivalent qualification in a relevant engineering discipline.
• Strong understanding and training on LV systems, Inverters, Energy Management Systems and Batteries.
• ECS/CSCS card or eligibility to obtain one.
• Working knowledge of UK HSE regulations and safe working practices
• Strong organizational and written communication skills.
• Full UK driving licence and willingness to travel to sites in UK.
• Forward thinking, a problem solver and solution provider.
• Flexibility for participating in out of hours coverage.
• Experience in Energy Storage/BESS Projects is greatly advantageous.
• Experience with HV operations will be advantageous.

What we offer:

• Competitive salary and bonus scheme.
• 25 days annual leave a year, plus bank holidays
• Flexible Working
• Private Medical Insurance
• Pension contribution, with matched contributions
• Car allowance (Van for work specific travel)