Tunnel Preconstruction Manager

Help Shape the UK’s Energy Future

Tunnel Preconstruction Manager 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 Tunnel Pre-Construction Manager is responsible for leading the development of construction and execution strategies for the Marine and Tunnels scope at Sizewell C, ensuring that tunnelling and both onshore and offshore shaft construction requirements are fully integrated into the project design, planning, procurement and target outturn cost (TOC) development processes.

The role will provide construction leadership throughout the pre-construction phase for the cooling water network, developing method-led and technically robust delivery strategies for the onshore tunnelling works, including launch adits, tunnel launch shafts, tunnel lining systems, sprayed concrete lining (SCL) works and tunnel boring machine (TBM) logistics. The role will engage with the design process to embed constructability considerations, coordinate key package interfaces and work closely with internal and external stakeholders to ensure safe, efficient and compliant delivery solutions are developed.

The Tunnel Pre-Construction Manager will work across different disciplines including design, engineering, logistics, procurement, commercial, planning and construction functions, together with the client, regulators and supply chain partners, to develop executable and affordable construction solutions that support successful project delivery.

What are we looking for?

Essential

• Significant experience in major infrastructure, tunnelling construction projects, including experience in pre-construction planning, construction method development and constructability reviews.
• Proven experience delivering projects across the full lifecycle in complex, regulated environment.
• A collaborative leader who demonstrates safety-leadership, clarity, respect, positivity, humility and solidarity in how they work.
• Strong stakeholder management and communication skills.
• Ability to lead technical reviews, drive collaboration and influence decisions.
• Ability to integrate technical, programme and commercial considerations into clear strategies.
• Knowledge of UK construction and health & safety legislation.

Project Specifics

The Marine & Tunnels Programme forms a critical component of the Sizewell C development and includes major marine and underground construction activities requiring complex integration between design, logistics, temporary works, shaft construction and TBM operations. The role provides an opportunity to shape delivery strategy for one of the UK's largest and most technically challenging infrastructure programmes, ensuring construction readiness and successful transition into delivery.

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.