Senior Project Manager

Sizewell C Limited; Ipswich; On-site; GBP 90,000 - 140,000; Full time

Job summary

The Civil Works Alliance (CWA) is seeking a Senior Project Manager (Backfill) to lead planning, technical development and delivery of a major backfill package across the Sizewell C site, handling about 3 million m³.

You will work with design, engineering and delivery teams to develop safe, buildable solutions, manage budgets, procurement, and risk, and drive timely, high‑quality execution. Membership of APM/PMI and CSCS cards are preferred. Experience on major civil projects is essential.

Qualifications

• Significant experience leading project teams on large-scale civil engineering programmes.
• Membership of APM, PMI or a similar professional project management body.
• CSCS PQP Card and/or CSCS Black Managers Card.

Responsibilities

• Lead planning, technical development and delivery of the Backfill package within Main Civil Works.
• Manage budgets, cost forecasts and mitigation strategies throughout the project lifecycle.
• Lead procurement activities, including defining scopes of work, tender processes, subcontractor selection and contract award.
• Develop delivery strategies and Project Execution Plans to support mobilisation and execution.
• Drive safe, timely and high‑quality project delivery while maintaining programme and budget performance.
• Manage quality assurance activities and inspection strategies.
• Identify, manage and resolve project risks, issues and interfaces across the wider Alliance.
• Ensure contractual obligations, deliverables and stakeholder requirements are achieved.
• Promote lessons learned, continuous improvement and collaborative working across the programme.

Skills

Project management

Stakeholder management

Civil engineering

Construction industry knowledge

APM/ PMI membership

Job description

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 seeking an experienced Senior Project Manager (Backfill) to play a pivotal role in the delivery of one of the UK’s most significant infrastructure projects. Working within the Main Civil Works (MCW) team, this role will lead the planning, technical development and delivery of a major backfill package involving approximately 3 million m³ of material across the Sizewell C site.

The successful candidate will be accountable for:

• Leading the pre‑construction planning and delivery of the Backfill package within Main Civil Works.

Collaborating with design, engineering and delivery teams to develop safe, sustainable and buildable solutions for permanent and temporary works

Supporting the development of 3D and 4D construction models, validating construction methodologies, sequencing and programme assumptions

Contributing to technical decision‑making on material suitability, site trials and innovative backfill solutions.

Managing project budgets, cost forecasts and mitigation strategies throughout the project lifecycle

Leading procurement activities, including defining scopes of work, tender processes, subcontractor selection and contract award

• Developing delivery strategies and Project Execution Plans to support successful mobilisation and execution.
• Driving safe, timely and high‑quality project delivery while maintaining programme and budget performance.
• Managing quality assurance activities and supporting the development of inspection strategies and teams.
• Identifying, managing and resolving project risks, issues and interfaces across the wider Alliance.
• Ensuring contractual obligations, deliverables and stakeholder requirements are achieved.

Promoting lessons learned, continuous improvement and collaborative working across the programme

What are we looking for?

• Extensive expertise in excavation, earthworks and backfill activities on major construction projects

Significant experience leading project teams on large‑scale civil engineering programmes.

Strong stakeholder management skills across multidisciplinary teams and departments

Membership of APM, PMI or a similar professional project management body.

CSCS PQP Card and/or CSCS Black Managers Card

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.