{"id":1354822,"url":"https://alion.io/job/sizewell-c-tunnel-preconstruction-manager","title":"Tunnel Preconstruction Manager","company":{"id":1777214,"name":"Sizewell C","domain":"sizewellc.com","url":"https://alion.io/company/sizewellc","size_band":"1001-5000","is_staffing_agency":false,"employer_type":"direct","is_intermediary":false,"listed_via":null,"ats_vendor":"SuccessFactors","truth_index":{"grade":"A","score":99,"open_postings":9,"ghost_share":0,"stale_share":0.222,"repost_share":0,"time_to_fill_p50_days":20,"computed_at":"2026-11-03T05:54:40Z"}},"role":"Operations","role_family":"Operations","seniority":null,"employment_type":null,"work_mode":"on_site","remote_scope":null,"remote_scope_basis":null,"remote_working_hours":null,"hiring_geo_confidence":"structured","locations":["London, United Kingdom"],"countries":["GB"],"hiring_countries":[],"hiring_countries_total":0,"salary":null,"salary_estimate":{"min_usd":48000,"max_usd":107000,"period":"year","method":"role_country_seniority_unknown","sample_n":550},"experience_years_min":null,"visa_sponsorship":false,"relocation_package":false,"has_equity":false,"technologies":[],"status":"closed","first_seen_at":"2026-09-03T02:00:00Z","employer_posted_date":"2026-09-03","last_verified_at":"2026-11-01T02:43:29Z","board_verified":false,"closed_at":"2026-11-01T02:43:29Z","days_open":59,"trust":{"level":"not_scored","repost_count":null,"flags":[],"days_open":59},"description":"The Sizewell C Jobs Service supports local people into exciting, long-term careers across our Project.#SZCJobs\nTunnel Preconstruction Manager (Sizewell C)\nCWA\nSizewell C\nJob Responsibilities\nDevelop construction methodologies that optimise safety, programme certainty and productivity while accommodating project constraints as well as governing technical, environmental and regulatory requirements.\nLead 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).\nLead constructability reviews to ensure temporary and permanent works interfaces are identified and managed effectively to mitigate risks / accommodate project constraints.\nDefine requirements for working space, access routes, temporary facilities, utilities, lifting operations, plant deployment, logistics and muck-away arrangements.\nQualifications\nEssential\nSignificant experience in major infrastructure, tunnelling construction projects,\nincluding experience in pre-construction planning, construction method development and constructability reviews.\nProven experience delivering projects across the full lifecycle in complex, regulated environment.\nA collaborative leader who demonstrates safety-leadership, clarity, respect, positivity, humility and solidarity in how they work.\nStrong stakeholder management and communication skills.\nAbility to lead technical reviews, drive collaboration and influence decisions.\nAbility to integrate technical, programme and commercial considerations into clear strategies.\nKnowledge of UK construction and health & safety legislation.\nLead and coordinate multidisciplinary workstreams relating to scope pre-construction activities, exercising stakeholder and interface management with relevant parties.\nEngage 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.\nDevelop technical inputs and construction assumptions that underpin scope definition, pricing and risk allowances.\nManage specialist consultants and contractors undertaking early contractor involvement (ECI) activities.\nEmbed 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.\nEngage the supply chain and support specialist ECI engagement, as required.\nLead 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.\nSupport the timely procurement of tunnelling items, defining specification / operating requirements, alongside supporting the tender and evaluation process.\nSupport and mentor engineers and package managers engaged in the tunnelling scope\nFor 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.\nThe Sizewell C Jobs Service supports local people into exciting, long-term careers across our Project.#SZCJobs\nTunnel Preconstruction Manager (Sizewell C)\nCWA\nSizewell C\nJob Responsibilities\nDevelop construction methodologies that optimise safety, programme certainty and productivity while accommodating project constraints as well as governing technical, environmental and regulatory requirements.\nLead 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).\nLead constructability reviews to ensure temporary and permanent works interfaces are identified and managed effectively to mitigate risks / accommodate project constraints.\nDefine requirements for working space, access routes, temporary facilities, utilities, lifting operations, plant deployment, logistics and muck-away arrangements.\nQualifications\nEssential\nSignificant experience in major infrastructure, tunnelling construction projects,\nincluding experience in pre-construction planning, construction method development and constructability reviews.\nProven experience delivering projects across the full lifecycle in complex, regulated environment.\nA collaborative leader who demonstrates safety-leadership, clarity, respect, positivity, humility and solidarity in how they work.\nStrong stakeholder management and communication skills.\nAbility to lead technical reviews, drive collaboration and influence decisions.\nAbility to integrate technical, programme and commercial considerations into clear strategies.\nKnowledge of UK construction and health & safety legislation.\nLead and coordinate multidisciplinary workstreams relating to scope pre-construction activities, exercising stakeholder and interface management with relevant parties.\nEngage 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.\nDevelop technical inputs and construction assumptions that underpin scope definition, pricing and risk allowances.\nManage specialist consultants and contractors undertaking early contractor involvement (ECI) activities.\nEmbed 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.\nEngage the supply chain and support specialist ECI engagement, as required.\nLead 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.\nSupport the timely procurement of tunnelling items, defining specification / operating requirements, alongside supporting the tender and evaluation process.\nSupport and mentor engineers and package managers engaged in the tunnelling scope\nFor this role you must have evidence of right to work in the UK. 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