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About the Role
Sizewell C is seeking a Commercial Manager / Senior Commercial Manager to lead the commercial management of programme-aligned scopes of work within the Technical Contract Team. This role ensures effective contract administration, governance, and supplier performance throughout the contract lifecycle, supporting the safe, timely, and cost-effective delivery of the Sizewell C design.
Responsibilities
- Lead the commercial management of major contracts within large-scale engineering and infrastructure projects.
- Manage and administer FIDIC/NEC/Bespoke Contracts, ensuring compliance with contract conditions and effective delivery.
- Prepare and maintain key contract documentation, including early warning notices, variations, and claim responses.
- Administer price fluctuation clauses.
- Draft position papers, prepare commercial reports, and author change events to support project decisions.
- Apply understanding of construction technology, cost drivers, and supply chain management to optimize outcomes.
- Manage, mentor, and develop team members, building capability across the commercial function.
- Engage confidently with senior stakeholders and clients, providing clear advice and updates.
- Engage with team members and contractors in a confident, professional, and collaborative manner, fostering constructive relationships while assertively ensuring that the client’s contractual rights and obligations are always protected.
- Take ownership of challenges and deliver solutions from start to finish without the need for direction.
- Contribute to strategic commercial planning and decision-making to support project success.
- Manage and contribute to ongoing continuous improvement initiatives.
Requirements
- Proven experience in major projects and FIDIC or NEC3/4/Bespoke contracts.
- Strong commercial, negotiation, influencing, problem-solving, communication, and stakeholder management skills.
- Team-oriented mindset, fostering innovation and collaboration.
- Ability to absorb complex information, assess requirements, and make recommendations.
- Knowledge of UK contract law and procurement best practices.
- Recognise the value brought from different cultures and experiences.
- Be open to other’s points of view and ideas, be willing to debate and to compromise.
- Positively challenge poor quality and performance.
- Identify solutions at the lowest possible level.
- Encourage others to bring new ideas forward.
- Value the rules and environment in which we operate.
- Give and receive feedback with respect.
- Embrace and engage with new people and ideas.
- One team, working closely together and helping each other.
- Empowered teams always looking forward.
- Shared responsibility for delivery the project outcomes.
- Communicate clearly and consistently.
- Promote collaboration and team alignment.
- Clearer and faster decision making.
- Drive simplification at all levels.
Skills
- Commercial management
- Contract administration
- Governance
- Supplier performance management
- Contractual communications
- Payment and cost assurance
- Forecasting and reporting
- Variation and compensation event administration
- Risk and claim mitigation
- Negotiation
- Influencing
- Problem solving
- Communication
- Stakeholder management
- Construction technology
- Cost drivers
- Supply chain management
- Team leadership
- Mentoring
- Strategic commercial planning
- Continuous improvement
Location
- London
Work Type
- Hybrid working
Experience Level
- Depending on experience
Education Level
- Degree or equivalent experience
Salary/Compensations
- 66,000 - 83,000 Circa
Benefits
- 5% annual target bonus
- 28 days holiday + bank holidays
- Market-leading pension (up to 7.5% employee / 15% employer)
- Health cover
- Cycle-to-work scheme
- Discounts
About the Company
- Sizewell C is one of the UK’s most ambitious infrastructure projects—a next-of-a-kind nuclear power station that will deliver clean, reliable energy for generations.
- Construction is fully underway following the Final Investment Decision.
- This is a chance to lead at scale and play a pivotal role in Britain’s journey to energy security and Net Zero.