Job Description

SUBSTATION SITE SUPERVISOR - Power (SSEN Contract)

South UK (Oxford as central hub) | CIS / PAYE | Vehicle + Fuel Card Provided

Why Join OCU Now?

OCU has recently achieved a major milestone, surpassing 1bn turnover, and has expanded internationally into New Zealand and Australia. With a clear growth strategy in place, we're creating unrivalled opportunities for ambitious people to build long-term careers in the utilities and infrastructure space.


As part of our partnership with SSEN, we're delivering one of the UK's largest and most exciting cabling programmes--80 substation cabling projects. This is your chance to be part of something huge: not only working on high-profile power projects, but also securing your own career progression as we continue to scale.

Company Information

OCU leads the way in end-to-end infrastructure engineering in the utilities, digital, and energy markets, specialising in safely and efficiently delivering complex client requirements. Our breadth of capabilities and depth of operational capacity, paired with cutting-edge technology, ensure that we are not just part of the market; we are leading it.


Working directly with many of the country's leading power, energy transition, water, telecoms, and digital clients, we are always looking for the very best talent to join our growing team.

The Opportunity

We are recruiting Site Supervisors to support our SSEN contracts across West London and the M4/M40 corridor. You'll be at the forefront of substation build and refurbishment, cabling, and overhead line work (11-132 kV). This role offers clear career progression into Site Management and Project Management, backed by long-term project security and OCU's ongoing expansion.

What You'll Be Doing

Supervising site teams and subcontractors. Leading daily briefings, safety documentation (RAMS, Permits, Toolbox Talks). Overseeing quality inspections and ITP completion. Ordering plant, materials, and managing temporary works. Cost and programme management. Collating documentation and as-built records. Liaising with clients and stakeholders.

What We're Looking For

SSEN CAT 3 Authorisation (essential) SSSTS / SMSTS First Aid at Work (mandatory) Recognised Civil or Electrical Qualification Strong IT literacy (Word, Excel, Outlook) Excellent communication, organisation, and leadership skills Willingness to travel and occasionally lodge away

What We Offer

Competitive package Company vehicle + fuel card 50 hours per week with long-term secured work Exposure to major high-voltage (132kV) projects * Huge progression opportunities within a 1bn+, PE-backed, international business