Help Shape the UK’s Energy Future
Senior Project 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 Main Civil Works Section.
What will you do?
The CWA is recruiting a Senior Project Manager to lead the delivery of a critical backfill package within the Main Civil Works programme at Sizewell C. This role sits at the heart of one of the UK’s most significant infrastructure projects, responsible for shaping the early stages of construction that enable the safe and efficient delivery of major structures across the site.
- Lead the full lifecycle of the backfill package, from technical development through to on‑site delivery.
- Manage design coordination with client consultants, engineering teams and alliance partners to ensure buildable and efficient solutions.
- Develop and validate construction methodologies, sequencing and 4D models to optimise programme delivery.
- Oversee cost planning, budgeting and financial performance, identifying risks and driving mitigations where required.
- Support procurement activities including subcontractor scope definition, tendering and contract negotiation.
- Define the delivery strategy and produce the Project Execution Plan to enable programme mobilisation.
- Drive safe, on‑time, and on‑budget delivery while maintaining the highest quality and compliance standards.
- Manage construction progress, report to key stakeholders and ensure alignment with programme milestones.
- Lead quality assurance activities, including defining inspection strategies and managing on‑site teams.
- Identify and resolve technical and operational challenges, while proactively managing risk across the package.
- Manage interfaces with adjacent works, ensuring seamless integration across the wider programme.
- Champion health, safety and environmental excellence, influencing teams and supply‑chain partners.
- Ensure effective resource planning and availability to meet delivery requirements.
What are we looking for?
- Proven experience leading large‑scale civil engineering projects, ideally within complex or regulated environments.
- Strong expertise in earthworks, excavation and backfill operations on major construction sites.
- Demonstrated ability to lead multidisciplinary teams and collaborate across functions.
- Experience managing programme delivery, including planning, cost control and stakeholder reporting.
- Knowledge of NEC4 contracts and working within joint ventures or alliances (desirable).
- Professional membership with APM, PMI or similar.
- CSCS Black Card (or equivalent).
- Strong leadership behaviours aligned to collaboration, clarity, respect and continuous improvement.
- A proactive and solutions‑focused approach, with the ability to manage complexity and drive results.
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 offer industry‑leading packages including market‑leading salaries, generous annual leave entitlements, a 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.
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