Sub Agent

Help Shape the UK’s Energy Future

Sub Agent Opportunity with the Civil Works Alliance (CWA), Supporting Sizewell C

As part of the CWA (Civil Works Alliance), you will support the building of Sizewell C. Sizewell C will be a 3.2-gigawatt power station generating low-carbon electricity for around 6 million homes and will play a key role in our energy future, supplying reliable, clean electricity for at least 60 years. This role will be within the Marine and Tunnels Section.

What will you do?

The Civil Works Alliance (CWA) is delivering the critical civil works for the Sizewell C nuclear power plant project. Within the Marine and Tunnel (M&T) portion, we are seeking a subagent to join our Surface team in Suffolk. This role offers the opportunity to be part of a dynamic alliance of world-class contractors, working on one of the UK’s most significant infrastructure projects.

Reporting to the Surface Deputy Site Manager for the Marine and Tunnel Portion, the sub-agent will be part of the leading team for the delivery of all surface works prior to the start of tunnelling activities, including the site set-up for the different compounds, segment yards, auxiliary areas, but also the execution of the earthworks and civil works at the TMB launch shafts and associated assets.

Key Responsibilities 

• Support the Deputy Site Manager in the delivery of day-to-day site operations across surface civil works.
• Monitor and coordinate construction progress, ensuring works are delivered to programme and quality requirements.
• Construction of site set-up of compounds, offices, auxiliary areas, and civil assets, in accordance with the Delivery Programme.

What are we looking for?

Knowledge & Skills

Essential

• Proven experience in construction site and civil engineering, preferably in large infrastructure projects.
• Strong understanding of site processes, RAMS, and quality control (ITPs) in the civil engineering environment.
• Experience in coordinating teams of supervisors and workforce.
• Solid organisational, planning, and time management skills.
• Good communication skills and ability to work effectively with diverse teams.
• Comprehensive knowledge of UK HSE legislation, site safety, and quality systems.
• Ability to work collaboratively and proactively within a multidisciplinary alliance structure.

Desirable

• Proven track record in delivery of large-scale civil works projects, ideally including major infrastructure, heavy earthworks, or tunnelling enabling works.
• Relevant qualifications (e.g. master’s in construction management or project management; SSSTS,SMSTS or equivalent certifications).

What we will offer you?

The CWA is a single delivery organisation made of up of the client (Sizewell C) and three parent companies - Balfour Beatty, Bouygues and Laing O'Rourke - which offer industry leading packages including market leading salaries, generous annual leave entitlements, pension scheme and other flexible benefits.

About Us

The CWA celebrates the creativity and innovation that comes from a diverse workforce, and we welcome applications from people of all backgrounds — especially those from under‑represented communities. Our project is built on five core values: Humility, Positivity, Respect, Solidarity, and Clarity.

By joining us, you’ll be encouraged to bring your whole self to work, speak up, and share your ideas. We encourage applications from all suitably qualified candidates, regardless of gender, race, disability, age, sexual orientation, gender reassignment, religion or belief, marital status, or pregnancy and maternity.

We are committed to protecting your privacy. If you decide to apply, please avoid including sensitive personal data in your CV.