WPS staff installing a power transformer

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Site Supervisor

Site Supervisor

The role

We are looking for an experienced Site Supervisor to join our Operations team in an established family-owned business in Leeds. Reporting to the Head of Site Services; key responsibilities will include site-based assembly of transformers, including fitting, wiring, supervision of site engineers and subcontractors. You will also be involved in transformer maintenance and refurbishment works.

To apply, please email your current CV along with a cover letter to careers@wilsonpowersolutions.co.uk. All applicants must be able to demonstrate their right to work in the UK. No agencies.

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Key Responsibilities

Lead and perform all transformer testing procedures, ensuring accuracy and compliance with technical standards.
Supervise and support Site Engineers and subcontractors during site and factory operations.
Conduct detailed site audits and generate comprehensive reports for internal and client use.
Ensure full compliance with health & safety regulations and promote a culture of safety on-site.
Assist in planning and organising site-based contracts, including reviewing BOMs and schedules.
Liaise with project managers to coordinate site surveys, job meetings, and progress updates.
Monitor job progress, identify risks or delays, and implement corrective actions as needed.
Carry out transformer maintenance and refurbishment works to extend equipment lifespan.
Travel frequently across the UK and abroad for site work.
Follow all reasonable requests by Management and Supervisors, to include duties not specified in this job

Mechanical Assembly Tasks

Fitting radiators, conservators, and cooling systems
Mounting bushings (HV and LV) and ensuring correct alignment
Installing tap changers and associated drive mechanisms
Sealing and gasketing of all flanged joints to prevent oil leaks
Fitting marshalling boxes, cable trays, and trunking
Installing fans, pumps, and other cooling accessories
Torque checking of all mechanical fasteners to specification

Electrical Assembly Tasks

Connecting internal leads to bushings, tap changers, and CTs
Belling out wiring in marshalling boxes and terminal blocks
Installing and wiring control devices (e.g., OTI, WTI, PRD, MOG)
Carry out functional checks on alarms, trips, and relays
Grounding and bonding of all metallic components

Maintenance & Refurbishment

Draining and refilling transformer oil
Replacing gaskets, seals, and desiccant breathers
Cleaning and inspecting internal components
Replacing or upgrading accessories (e.g., OTI/WTI, relays)
Oil sampling for dissolved gas analysis (DGA)

Site Readiness & Safety

Setting up safe work zones and barriers
Using lifting and rigging equipment safely
Maintaining a clean and organised work area
Adhering to site-specific RAMS (Risk Assessments and Method Statements)
Reporting hazards or near misses to supervisors.

Testing Support (Desirable but not Essential)

IR (Insulation Resistance) testing using a Megger
HV Withstand Test
Carry out functional checks of:
Buchholz relay
PRD
MOG
Air bag relay
Oil surge relay
Fans

Skills, knowledge & experience

Experience and competence of working on site fitting distribution and power transformers and associated packages is essential
Hands on experience of working within a mechanical/electrical engineering environment is essential
The ability to understand mechanical and schematic drawings is essential
Apprentice trained or a Mechanical/Electrical qualification is essential
Experience of Health & Safety and conducting risk assessments is essential
ECS accreditation is essential
Full UK driving licence is essential
Transformer testing experience is desirable
You will have good written and verbal communication skills, with the ability to liaise with customers and resolve issues in a proactive and positive manner
Strong trouble shooting skills
Excellent attention to detail
You will be flexible and adaptable and be prepared to attend site at short notice which may be outside your normal working hours
Experience of working collaboratively with other operations personnel with the ability to train and enhance your work colleagues’ skills.
Ideally experience of working within a continuous improvement environment
Ideally have up to date training on Overhead Crane/Slinging Lifting certification
Ideally have a FLT licence
Ideally IPAF certification