Commercial Manager – Major Infrastructure (Sizewell C)
Permanent | £85,000 + Company Vehicle or £7,000 Car Allowance
The Opportunity
A leading UK civil engineering and infrastructure contractor is looking to appoint a Commercial Manager to support long‑term delivery on Sizewell C, including the design and build of three new wastewater treatment plants forming part of the site’s critical utilities infrastructure. This is a permanent role offering stability, progression and the chance to work on a nationally significant project with decades of future work.
The contractor is expanding its commercial leadership team and is seeking someone with strong infrastructure, utilities or water sector experience who can operate confidently within NEC‑governed environments.
Key Requirements
- MUST have NEC contract experience (NEC3 or NEC4)
- Background in water, utilities or infrastructure projects
- Experience managing contracts governed by Primavera P6
- Strong commercial reporting, forecasting and change management capability
- Ability to lead commercial governance across complex, multi‑stakeholder programmes
- SC clearance is ideal, but not essential – the contractor can sponsor this
Role Responsibilities
- Lead commercial management across Sizewell C work packages, including three wastewater treatment plant design & build projects
- Manage NEC contract administration, change control, compensation events and risk
- Oversee subcontract procurement, negotiation and commercial performance
- Produce accurate CVRs, forecasts, cashflow and commercial reports
- Work closely with project delivery teams to ensure cost and value alignment
- Maintain strong client and supply chain relationships
- Ensure compliance with internal governance and external contractual obligations
- Support strategic commercial decision‑making across the programme
Package & Benefits
- £85,000 base salary
- Company vehicle or £7,000 car allowance
- 22 days annual leave + bank holidays
- 8% pension contribution
- Life assurance
- Health cash plan
- Employee wellbeing support
- Retail & lifestyle discounts
- Clear career development pathways
Ideal Candidate Profile
You’ll be a commercially astute professional with a track record in NEC‑driven environments, ideally within utilities, water or major infrastructure. You’ll bring strong contractual knowledge, excellent stakeholder management and the confidence to lead commercial outcomes on a high‑profile project
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