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Salary
≈ $48k – $107k per year (Estimated)
Location
In office (London)

Confirmed on the employer's own hiring board on Oct 29, 2026. First seen by Alion on Sep 3, 2026. Sizewell C scores A on the Alion truth index.

Overview
Company
Impact
Profile match
Sizewell C is the company building a new nuclear power station at Sizewell on the Suffolk coast of England, where two EPR reactors are planned to supply low-carbon electricity for around six million homes. The project reached a final investment decision in 2025 with the UK government as the largest shareholder alongside EDF and other investors, and its construction is expected to involve more than 2,000 UK businesses and support 70,000 jobs. Construction-phase openings span project and commercial managers, site and quality engineers, surveyors, planners, bus and HGV drivers and apprentices, many advertised through the EDF jobs service it shares with the Hinkley Point project.

The Sizewell C Jobs Service supports local people into exciting, long-term careers across our Project.#SZCJobs

Tunnel Preconstruction Manager (Sizewell C)

CWA

Sizewell C

Job Responsibilities

  • 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 (i) tunnelling works including launch audit formation, segmental lining and SCL works alongside (ii) 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 / accommodate project constraints.
  • Define requirements for working space, access routes, temporary facilities, utilities, lifting operations, plant deployment, logistics and muck-away arrangements.

Qualifications

Essential

  • Significant experience in major infrastructure, 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 environment.
  • 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.
  • 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 (responsible for establishing the tunnel launch compound) 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.
  • Engage the supply chain and support specialist ECI engagement, as required.
  • Lead preparation of the technical submission supporting approval of the Target Outturn Cost (TOC) for the tunnelling scope. This will involve leading the development of key deliverables including a project execution plan and delivery strategies, documenting key underpinning assumptions.
  • Support the timely procurement of tunnelling items, defining specification / operating requirements, alongside supporting the tender and evaluation process.
  • Support and mentor engineers and package managers engaged in the tunnelling scope

For this role you must have evidence of right to work in the UK. As a project, we do not discriminate on the grounds of age, gender, race, colour, religion, disability or sexual orientation, and we welcome applications from all sections of the community.

The Sizewell C Jobs Service supports local people into exciting, long-term careers across our Project.#SZCJobs

Tunnel Preconstruction Manager (Sizewell C)

CWA

Sizewell C

Job Responsibilities

  • 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 (i) tunnelling works including launch audit formation, segmental lining and SCL works alongside (ii) 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 / accommodate project constraints.
  • Define requirements for working space, access routes, temporary facilities, utilities, lifting operations, plant deployment, logistics and muck-away arrangements.

Qualifications

Essential

  • Significant experience in major infrastructure, 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 environment.
  • 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.
  • 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 (responsible for establishing the tunnel launch compound) 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.
  • Engage the supply chain and support specialist ECI engagement, as required.
  • Lead preparation of the technical submission supporting approval of the Target Outturn Cost (TOC) for the tunnelling scope. This will involve leading the development of key deliverables including a project execution plan and delivery strategies, documenting key underpinning assumptions.
  • Support the timely procurement of tunnelling items, defining specification / operating requirements, alongside supporting the tender and evaluation process.
  • Support and mentor engineers and package managers engaged in the tunnelling scope

For this role you must have evidence of right to work in the UK. As a project, we do not discriminate on the grounds of age, gender, race, colour, religion, disability or sexual orientation, and we welcome applications from all sections of the community.

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