Senior Project Manager
Senior Project Manager - Ancillary Works (Pre-Construction)
Hybrid – Orwell Business Park (Ipswich)
Join the exciting journey of one of the UK's largest nuclear projects at Sizewell C!
Laing O'Rourke, on behalf of the Civil Works Alliance (CWA), is recruiting a Senior Project Manager to lead the Ancillary Works package on the Sizewell C project — one of the UK's largest and most complex infrastructure programmes.
CWA, appointed by the Sizewell C client, brings together three leading delivery contractors — Laing O'Rourke, Bouygues, and Balfour Beatty — to deliver the civils scope including Enabling Earthworks, Main Civil Works, and Marine and Tunnelling.
This is a senior leadership role with a strong pre‑construction focus, responsible for shaping, planning and setting up the successful delivery of critical enabling infrastructure, including ancillary buildings and permanent roads and networks that will support the long‑term operation of a new nuclear power station.
Key Responsibilities
- Provide senior leadership for the Ancillary Works package across pre‑construction, Early Contractor Engagement (ECE) and site delivery, with accountability through to commissioning
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Take a leading construction role during pre‑construction, working closely with the client's consultant, Alliance design teams and engineering teams to ensure design integration, constructability and buildability
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Drive early resolution of design, scope and interface risks, including coordination across Ancillary Buildings and Permanent Roads and Networks
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Lead the development, ownership and maintenance of detailed construction programmes, ensuring alignment with the wider Main Civil Works programme and main contract
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Apply expert planning principles, short‑interval control and critical path analysis to resolve sequencing challenges early
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Develop and implement logistics strategies during pre‑construction, including site setup, mobilisation, phasing and access planning
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Utilise 3D modelling and digital tools to identify construction, logistics and interface constraints and develop mitigation strategies
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Lead the preparation of Project Execution Plans (PEPs), embedding HSE, quality, logistics, RAMS and interface management requirements from the outset
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Develop and implement procurement strategies for subcontractors and specialist suppliers, ensuring scopes are clearly defined and commercially robust
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Engage proactively with the supply chain during ECE to align on safety, quality, programme and logistics expectations, including leading pre‑start and mobilisation activities
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Maintain close collaboration with Alliance partners and adjacent work packages, managing complex interfaces across civils, earthworks, temporary works and adjacent structures
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Transition into site leadership, driving safe, timely and cost‑effective delivery while maintaining guide of programme, budget, risk and quality performance
What Skills and Experience We Are Looking For
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Extensive pre‑construction experience, with a proven track record of essential complex civil engineering or infrastructure packages through pre‑delivery and Early Contractor Engagement phases
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Demonstrable experience shaping scope, design, programme, logistics and procurement strategies ahead of site mobilisation
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Strong capability in developing and owning detailed construction programmes, resolving sequencing and interface risks early
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Proven experience working collaboratively with design, engineering and commercial teams to drive constructability and buildability outcomes
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Experience leading large‑scale civil engineering or infrastructure projects within joint venture or alliance environments
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Sound commercial and contractual awareness, ideally with experience of NEC4 ECC and SC contracts
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Membership of APM, PMI or a similar recognised project management body
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CSCS Black Manager or PQP card
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Experience working in nuclear or other highly regulated conditions is desirable
Why Sizewell C
This is your chance to contribute to one of the UK's most progressive infrastructure projects, shaping the future of energy while working in a supportive, dynamic environment. Be part of a team that values innovation, safety, and sustainability at every stage of the journey—from investment to construction and beyond.
About Us
Laing O'Rourke are an international engineering and construction company delivering state‑of‑the‑art infrastructure and buildings projects for clients in the UK, Middle East and Australia.
Certainty, reliability, quality – this is what our clients want. And at Laing O'Rourke, we have more than 150 years of experience delivering it. Laing O'Rourke's story is one of energy, passion, ambition, people and teamwork. We harness the power of our experience to deliver certainty for our clients.
As part of the Disability Confident scheme, we would like to enable access to candidates with long‑term conditions and disabilities through the ‘Offer an Interview' scheme. This supports applicants that meet the essential criteria by offering an interview for the advertised position. Please let us know if you would like to opt in to this scheme and if you require any adjustments for the interview process.
We want to ensure our recruitment process is accessible to all. If you need the application form in an alternative format or would like to know more about our recruitment process, please email
resourcingteam@laingorourke.com.
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