Specialized in civil engineering and engineering structures, Bouygues Travaux Publics is one of the world leaders in the fields of land use planning and sustainable infrastructure construction. Bouygues Travaux Publics is committed to diversity and is open to all talents.

Tunnel Pre-Construction Manager - Marine and Tunnel

About the Opportunity

As part of the CWA (Civil Works Alliance), we will support the building for 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.

The Civil Works Alliance is delivering the critical civil works for this once-in-a-generation project. We are seeking an experienced and visionary Tunnel Pre-Construction Manager to lead the development of construction and execution strategies for the Marine and Tunnels scope at Sizewell C. This is a pivotal role that will shape delivery strategy for one of the UK's largest and most technically challenging infrastructure programmes, ensuring construction readiness and successful transition into delivery.

Reporting into the Marine and Tunnels leadership team, the Tunnel Pre-Construction Manager will provide construction leadership throughout the pre-construction phase for the cooling water network. This role will develop 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. You 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.

What You Will Do

• Develop construction methodologies that optimise safety, programme certainty and productivity while accommodating project constraints as well as governing technical, environmental and regulatory requirements
• Lead the development of method-led execution strategies for tunnelling works including launch adit formation, segmental lining and SCL works, alongside constructing the onshore tunnel launch shafts (3No) and offshore tunnel-shaft-connections (6No)
• Lead constructability reviews to ensure temporary and permanent works interfaces are identified and managed effectively to mitigate risks and accommodate project constraints
• Define requirements for working space, access routes, temporary facilities, utilities, lifting operations, plant deployment, logistics and muck-away arrangements
• Lead and coordinate multidisciplinary workstreams relating to scope pre-construction activities, exercising stakeholder and interface management with relevant parties
• Engage with the logistics and tunnelling surface works team to coordinate the construction-stage requirements of the tunnelling works
• Develop technical inputs and construction assumptions that underpin scope definition, pricing and risk allowances
• Manage specialist consultants and contractors undertaking early contractor involvement (ECI) activities
• Embed constructability into the detailed design process, engaging with counterparts in the design team to contribute to design decisions and highlight key considerations for construction-stage requirements
• Lead preparation of the technical submission supporting approval of the Target Outturn Cost (TOC) for the tunnelling scope, including project execution plan and delivery strategies
• Support the timely procurement of tunnelling items, defining specification and operating requirements, and support the tender and evaluation process
• Support and mentor engineers and package managers engaged in the tunnelling scope

What We Are Looking For

Essential Experience and Skills:

• Significant experience in major infrastructure and 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 environments
• 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

What We Will Offer You

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

About Us

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 Civil Works Alliance is more than just an alliance; we are bringing together a single delivery organisation with years of learning and experience from other major complex infrastructure programmes worldwide. Our partnership unites Sizewell C and three international construction companies to deliver world-class civil engineering. We are committed to fostering a workplace where collaboration, innovation, and excellence thrive. Our five core values — Humility, Positivity, Respect, Solidarity, and Clarity — guide everything we do and define our culture.

Diversity and Inclusion

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. 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.

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