OCU leads the way in end-to-end infrastructure engineering across the utilities, digital, and energy markets, specialising in the safe and efficient delivery of complex client requirements. With a breadth of capability, depth of operational capacity, and a commitment to innovation, OCU is not just part of the market — it is leading it.
Working directly with many of the UK’s leading water, energy transition, telecoms, and infrastructure clients, we are looking for an experienced Site Supervisor to join our growing Water sector team.
This is an opportunity to play a key role in the delivery of wastewater infrastructure and treatment projects, supporting civil, mechanical, and electrical site activities across live operational environments.
We are looking for an experienced Site Supervisor to oversee day-to-day site operations across wastewater treatment and infrastructure projects. This role is focused on leadership, safety, coordination, and ensuring works are delivered efficiently and to the highest standards.
You will supervise daily site activities, subcontractors, and direct labour, ensuring all works are completed safely, in line with specifications, and to programme requirements. The role will involve overseeing a range of civil, mechanical, and electrical activities including ducting, trenching, pipework, cabling, and associated infrastructure works across wastewater treatment facilities.
You will conduct site inspections, quality checks, and safety audits while supporting the management of site resources, workflow planning, and productivity. You will also play an important role in supporting incident and near-miss reporting, ensuring corrective actions are implemented and a strong safety culture is maintained across all activities.
The successful candidate will ensure all site documentation, inductions, permits, and safety procedures are in place and compliant with company and industry standards. Working closely with project managers, engineers, and wider delivery teams, you will help ensure projects are delivered successfully within challenging operational environments.
We are looking for someone with previous site supervision or site management experience within the civil, mechanical, electrical, water, or wastewater sector. Experience working on wastewater treatment projects is essential, alongside a strong understanding of site operations within live environments.
You should hold a valid SMSTS or SSSTS qualification, with IOSH or NEBOSH certification considered advantageous. NRSWA Supervisor accreditation would be beneficial, alongside awareness of confined spaces, deep excavation safety, and working at height practices.
Strong leadership and communication skills are essential, along with the ability to coordinate teams, manage subcontractors, and maintain high standards of safety and quality across site activities.
A full UK driving licence is essential for this role.
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.
Our commitment to inclusion
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
[email protected].
At OCU Group, we don’t just deliver infrastructure - we help power modern life.
As one of the UK’s fastest-growing utility and infrastructure businesses, we deliver complex, nationally critical projects across power, energy transition, water, telecoms, and digital infrastructure. Over the last five years, OCU has grown five-fold to a £1.1bn organisation, expanding both organically and through strategic acquisitions across the UK, Australia, New Zealand and India.
Our growth is driven by ambitious people, operational excellence, and a commitment to doing things properly. We work on projects that genuinely matter by supporting the UK’s energy transition, strengthening essential infrastructure, and helping build more sustainable communities for the future.
Whether you’re an experienced professional looking to take ownership of major projects and influence delivery at scale, or someone starting your career through an apprenticeship, graduate programme, or placement route, OCU offers real opportunity to grow, develop, and make an impact.
We are building a business where high performance, collaboration, innovation, and accountability sit at the centre of our culture. Our people are trusted to lead, encouraged to challenge thinking, and supported to continuously develop their skills and careers.
At OCU, you won’t just join a growing business, you’ll help shape it.
Our Culture & Values
At OCU, our values are at the heart of everything we do. We care about safety, lead with integrity, strive to be better every day, make a positive impact, and deliver to grow, together, as One Company United.
Our Commitment to Inclusion
At OCU Group, we believe diversity, inclusion, and belonging are fundamental to building stronger teams, better ideas, and a more successful business. We welcome applications from people of all backgrounds and are committed to creating an environment where everyone feels valued and supported.
As part of our commitment to fairness and equality, candidates may be asked to complete an equal opportunities monitoring form during the recruitment process. This information is used for monitoring purposes only and plays no part in hiring decisions.
We are proud to be a Disability Confident employer and are committed to offering interviews to candidates with disabilities or long-term health conditions who meet the essential criteria for the role.
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 is, by emailing
[email protected].
