Site Supervisor - CIS

Who are we?

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 our cutting‑edge technology, ensure that we are not just part of the market; we are leading it.

Department: Water

Location: North Wales

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

• Supervise daily site activities and subcontractors
• Ensure work is carried out safely, to specification, and on schedule
• Monitor civil and electrical installations, including ducting, trenching, and switch station works
• Conduct site inspections, quality checks, and safety audits
• Manage resources, plan manpower, and support workflow efficiency
• Support incident and near‑miss reporting, ensuring corrective actions are implemented
• Ensure all site inductions and permits are in place
• Promote a culture of zero harm and teamwork

• Civil or electrical site management experience
• SMSTS / SSSTS
• IOSH / NEBOSH (preferred)
• NRSWA Supervisor (desirable)
• Confined spaces and deep excavation awareness (beneficial)
• Working at height appreciation
• Full UK driving licence (essential)

OCU Group is one of the UK’s fastest‑growing companies, delivering complex projects across power, utilities, water, and digital infrastructure. With sales growing five‑fold to £1.1bn over the last five years, we are expanding both organically and through acquisitions, including recent growth in Australia and New Zealand.

For experienced professionals, OCU offers meaningful responsibility, the chance to influence delivery, and career progression in a business that invests in capability, autonomy, and high performance.

For those starting their careers, we provide structured routes through apprenticeships, graduate programmes, and training academies, with hands‑on experience on real projects and supportive mentors to help you learn and progress.

We value safety, integrity, collaboration, and doing things properly and we support people who want to make a tangible impact.

At OCU Group, we believe that diversity and inclusion are fundamental to building a workplace where people feel valued, supported and able to do their best work. We are an inclusive employer and welcome applications from people of all backgrounds. As part of our commitment to fairness and equality, we may ask candidates to complete an equal opportunity monitoring form. This information is used for monitoring purposes only and plays no part in selection decisions.

We are proud to be a Disability Confident employer. This means we are committed to offering an interview to candidates with a long‑term health condition or disability who meet the essential criteria for the role. If this applies to you, please contact us at

To ensure that everyone has a fair opportunity to join our team, please inform us if you require any reasonable adjustments to our recruitment and interview process, by emailing