At a Glance
- Tasks: Lead the delivery of a critical backfill package for Sizewell C's construction.
- Company: Join the Civil Works Alliance, a collaboration of industry leaders.
- Benefits: Market-leading salary, generous leave, pension scheme, and flexible benefits.
- Other info: Diverse and inclusive workplace that values creativity and innovation.
- Why this job: Shape the future of energy with a significant infrastructure project.
- Qualifications: Experience in large-scale civil engineering and team leadership required.
The predicted salary is between 75000 - 85000 £ per year.
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.
- The successful candidate will play a key leadership role across both pre-construction and delivery phases, driving collaboration between technical, commercial and operational teams.
- From defining strategy and developing execution plans through to overseeing delivery on site, this role offers the opportunity to influence a complex, high-value package with national importance.
- Leading the full lifecycle of the backfill package, from technical development through to on-site delivery.
- Managing design coordination with client consultants, engineering teams and alliance partners to ensure buildable and efficient solutions.
- Developing and validating construction methodologies, sequencing and 4D models to optimise programme delivery.
- Overseeing cost planning, budgeting and financial performance, identifying risks and driving mitigations where required.
- Supporting procurement activities including subcontractor scope definition, tendering and contract negotiation.
- Defining the delivery strategy and producing the Project Execution Plan to enable programme mobilisation.
- Driving safe, on-time, and on-budget delivery while maintaining the highest quality and compliance standards.
- Managing construction progress, reporting to key stakeholders and ensuring alignment with programme milestones.
- Leading quality assurance activities, including defining inspection strategies and managing on-site teams.
- Identifying and resolving technical and operational challenges, while proactively managing risk across the package.
- Managing interfaces with adjacent works, ensuring seamless integration across the wider programme.
- Championing health, safety and environmental excellence, influencing teams and supply chain partners.
- Ensuring 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, 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.
Senior Project Manager employer: Sizewell C Limited
The Civil Works Alliance (CWA) is an exceptional employer, offering a unique opportunity to work on the transformative Sizewell C project, which is pivotal for the UK's energy future. With a strong emphasis on collaboration, respect, and continuous improvement, employees benefit from competitive salaries, generous leave entitlements, and a supportive work culture that values diversity and innovation. Joining CWA means being part of a dedicated team that champions health, safety, and environmental excellence while providing ample opportunities for professional growth and development.
