HV Supervisor

Generator Power; Ackton; On-site; GBP 60,000 - 90,000; Full time

Job summary

Generator Power Ltd. seeks an experienced HV Supervisor to lead and actively participate in installation, commissioning, operation, and maintenance of High Voltage electrical systems.

This hands-on role requires leading by example, guiding engineers while ensuring safe, efficient delivery to the highest standards. The ideal candidate will supervise site activities, perform HV switching, support transformer and substation work, and provide mentorship to apprentices.

Qualifications

• NVQ Level 3 Electrical Engineering (or equivalent)
• HV Authorised Person (AP) qualification
• HV Switching experience
• 18th Edition Wiring Regulations
• Full UK Driving Licence
• Experience working on HV distribution systems, transformers and switchgear
• Senior Authorised Person (SAP) status
• Temporary power or generator industry experience
• SMSTS, SSSTS or IOSH qualification
• Substation commissioning experience

Responsibilities

• Supervise HV site activities and engineering teams.
• Carry out HV switching operations in accordance with approved procedures.
• Support installation, commissioning and maintenance of transformers, switchgear and substations.
• Undertake fault-finding and diagnostics on HV systems.
• Ensure all work is completed in line with company safety rules and industry standards.
• Deliver toolbox talks and site safety briefings.
• Review and implement RAMS.
• Liaise with customers, DNOs, contractors and internal departments.
• Complete operational documentation, switching logs and commissioning records.
• Support emergency call-outs and breakdown response when required.
• Mentor and support junior engineers and apprentices.

Skills

Leadership

Safety-focused

Communication skills

Travel flexibility

Education

NVQ Level 3 Electrical Engineering (or equivalent)

Senior Authorised Person (SAP) status

SMSTS/SSSTS or IOSH qualification

Substation commissioning experience

Tools

HV Authorised Person (AP) qualification

HV Switching experience

18th Edition Wiring Regulations

Temporary power or generator industry experience

Full UK Driving Licence

Job description

High Voltage (HV) Supervisor

Department: Operations / Engineering

Reports To: HV Operations Manager

Job Purpose:

To supervise and actively participate in the installation, commissioning, operation, and maintenance of High Voltage electrical systems. This is a hands‑on role requiring the successful candidate to lead by example, undertaking HV works alongside the engineering team whilst ensuring projects are delivered safely, efficiently and to the highest standards.

Key Responsibilities:

• Supervise HV site activities and engineering teams.
• Carry out HV switching operations in accordance with approved procedures.
• Support installation, commissioning and maintenance of transformers, switchgear and substations.
• Undertake fault-finding and diagnostics on HV systems.
• Ensure all work is completed in line with company safety rules and industry standards.
• Deliver toolbox talks and site safety briefings.
• Review and implement RAMS.
• Liaise with customers, DNOs, contractors and internal departments.
• Complete operational documentation, switching logs and commissioning records.
• Support emergency call-outs and breakdown response when required.
• Mentor and support junior engineers and apprentices.

Essential Requirements:

• NVQ Level 3 Electrical Engineering (or equivalent).
• HV Authorised Person (AP) qualification.
• HV Switching experience.
• 18th Edition Wiring Regulations.
• Full UK Driving Licence.
• Experience working on HV distribution systems, transformers and switchgear.
• Desirable Requirements
• Senior Authorised Person (SAP) status.
• Temporary power or generator industry experience.
• SMSTS, SSSTS or IOSH qualification.
• Substation commissioning experience.

Personal Attributes:

• Strong safety focus.
• Hands‑on approach to engineering activities.
• Good leadership and communication skills.
• Self-motivated and organised.
• Customer-focused with a professional attitude.
• Flexible regarding travel and working hours.

Additional Information:

• UK-wide travel and overnight stays may be required.
• Participation in an on‑call rota may be required.
• Occasional weekend and out‑of‑hours working will be necessary to support operational requirements.

Summary:

The HV Supervisor will lead site teams whilst remaining actively involved in the practical delivery of High Voltage projects, ensuring safe, compliant and high-quality work at all times.