Maintenance Technician

National Grid; Doncaster; On-site; GBP 43,000 - 50,000; Full time

Job summary

National Grid is looking for a Maintenance Technician to join their Oil Management Unit in Doncaster. This role encompasses supporting critical operations across the electricity transmission network, focusing on transformer oil management while ensuring operational efficiency. The technician will perform on-site support and equipment services at various substations, along with maintenance duties and compliance checks, contributing to the UK's high-voltage infrastructure reliability. Opportunities for training and professional growth are also available.

Benefits

Paid overtime

Company car (Hybrid or full electric)

26 days holiday plus 8 statutory days

Contributory pension scheme

Financial support for professional development

Flexible benefits

Qualifications

• Background in breakdown, repair, and maintenance in an Industrial process environment.
• Ability to drive regularly with occasional overnight stays.
• Excellent organisational and time-management skills.

Responsibilities

• Support the on-site engineer at the Doncaster Oil Treatment Facility.
• Assist with ongoing maintenance, servicing, and fault diagnosis of OMU plant and equipment.
• Plan LGV vehicle movements and ensure compliance with operator licence requirements.

Skills

Team player

Organisational skills

Time-management skills

Education

NVQ L3 / ONC - Electrical or Mechanical qualification

Tools

LGV2

Job description

National Grid is seeking a skilled Maintenance Technician to join our Oil Management Unit (OMU), based in Doncaster. This role supports critical operations across the electricity transmission network, with a focus on transformer oil management and equipment maintenance. You’ll also have the opportunity to work closely with our Asset Operations teams on major transformer projects. Company car provided (Hybrid or full electric).

You’ll support the on-site engineer at the Doncaster Oil Treatment Facility with delivering on-site technical support and equipment services at substations throughout Central and Northern England, including North Wales. Approximately 50% of the role involves driving to substations across this region to complete on-site surveys and support for OMU equipment to ensure safe and efficient operation.

The remaining 50% involves planning LGV vehicle movements, oil refilling operations and ensuring compliance with operator licence requirements. As the Maintenance Technician you will also assist with ongoing maintenance, servicing, and fault diagnosis of OMU plant and equipment-both mechanical and electrical-at the Doncaster facility. The role includes regular travel and occasional overnight stays, supporting project delivery across a wide geographic area. Full training will also be provided on OMU equipment.

This is an opportunity to be part of a specialised technical team contributing directly to the reliability and resilience of the UK’s high-voltage infrastructure.

Requirements:

• NVQ L3 / ONC - Electrical or Mechanical qualification.
• Breakdown, repair and maintenance background ideally in an Industrial process environment.
• Team player - can work as part of a team.
• Can drive on a regular basis with occasional overnight stays.
• Excellent organisational and time-management skills.

Desirable

• IOSH / NEBOSH / LGV2

Pay and Benefits

• A starting salary of £43,315 pa + paid overtime + bonus + company car.
• 37 Hours Monday to Friday.
• 26 days holiday plus 8 statutory days.
• The option to buy additional or sell holiday days.
• Generous contributory pension scheme - we will double-match your contribution to a maximum company contribution of 12%. Totalling 18%.

• Growth and development with financial support to help cover the cost of professional membership subscriptions, course fees, books, exam fees and time off for study leave - relevant to your role.
• Access to flexible benefits such as a share incentive plan, salary sacrifice car and technology schemes, support via employee assistance lines and matched charity giving to name a few.
• Family care benefits including a back-up care service for when your usual care arrangements fall through (six paid days each year as standard with the option to purchase further days).
• Access to apps that support health, fitness and wellbeing.

Apply now

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