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About the Role

Sizewell C is designing, financing, constructing, operating, and decommissioning a nuclear power plant and related infrastructure. The company is focused on delivering this project on time, on budget, and to the highest quality and safety standards. Sizewell C is economically regulated by OFGEM under the Regulated Asset Base (RAB) model and aims to replicate the design of Hinkley Point C while innovating for cost and time savings. The company is entering a phase of growth as it matures into an independent organization and continues building one of the UK's largest energy projects.

Responsibilities

Review, challenge, and lead on the agreement of AACF submissions, ensuring forecasts are robust, evidence-based, and aligned with cost, delivery, and risk positions.
Assess and validate forecast movement and cost trends, ensuring changes are clearly understood and appropriately reflected in the overall commercial position.
Provide oversight and assurance of PAA commercial performance, including the production and validation of commercial performance reporting.
Manage and assure profit incentivisation mechanisms, ensuring outputs are consistent with agreed forecasts and contractual principles.
Provide commercial input on what should be paid based on agreed cost positions, forecast outcomes (AACF), and incentivisation adjustments.
Ensure alignment across commercial, finance, and project controls data, including contractor submissions and client assurance positions.
Drive the digitalisation of commercial processes through the use of data, automation, and reporting tools to improve efficiency, accuracy, and insight.
Lead on the governance and audit processes, ensuring outputs are auditable, evidence-based, and compliant with PAA requirements.

Requirements

Significant experience in commercial management within major infrastructure or civil engineering programmes.
Experience in driving improvements in commercial reporting by digitalisation and data quality, including automation of manual processes, standardisation of outputs, and improved traceability.
Strong capability in Excel at an advanced level to build, review, and manage forecast models, cost reconciliations, incentivisation calculations, and reporting packs.
Experience using Power BI or similar tools for dashboarding and visualisation, and familiarity with systems such as SAP, CEMAR or Unifier.
Member of RICS/ICE/CICES/IOB or equivalent professional body.
Proven ability of working within a complex major project/programme environment in both procurement and post-procurement phases.
Evidence of successfully undertaking complex procurements and of administering contracts.
Effective Management and Leadership skills, with clear knowledge of best practice contract methodologies in the UK environment.
Honed commercial skills and demonstrable ability to make sound decisions on complex matters (considering technical and commercial topics) of high financial value.
Good understanding of procurement, contract performance measurement, risk management and claim management.
Excellent negotiating, influencing and communication skills.
Excellent problem-solving skills.
Experience of working in a dynamic environment with multiple stakeholders.
Experience of standard forms of contract (NEC and FIDIC) within the power/construction industry on complex major projects/programmes.
Possesses skills to act as deputy.
Educated to degree level.
Familiar with the nuclear site licence conditions and the nuclear baseline philosophy.
Understanding of the UK regulatory framework.
Understanding of UK and international supply chain within the nuclear sector.
Knowledge of English law and its impact upon the contract and commercial function.
Must have the right to work in the UK.
Must meet the criteria for Security Vetting, which ordinarily requires UK residency for at least three of the past five years.

Skills

Effective communication skills, able to present complex commercial and performance information in a concise and structured manner to a range of stakeholders.
Ability to operate effectively within an alliance, collaborative environment, with a strong “best for project” mindset.
Comfortable working in a fast-paced, high-pressure programme environment, managing competing priorities and delivering to tight timelines.
A strong analytical mindset with the ability to interrogate complex cost and performance data, challenge contractor submissions, and provide clear, evidence‑based commercial insight.
Excel at an advanced level
Power BI or similar tools for dashboarding and visualisation
SAP, CEMAR or Unifier
Negotiating skills
Influencing skills
Communication skills
Problem-solving skills

Location

London

Work Type

Hybrid
Permanent
Full-time

Experience Level

Senior

Education Level

Degree level

Salary/Compensations

Circa £82,186 depending on experience

Benefits

5% annual incentive bonus
Pension: Up to 7.5% employee / 15% employer contribution
28 days holiday plus bank holidays

About the Company

Sizewell C’s business is to design, finance, construct, commission, operate, maintain, and eventually decommission the nuclear power plant and related infrastructure at Sizewell C in Suffolk.
Sizewell C is economically regulated by OFGEM under the Regulated Asset Base (RAB) model similar to other UK electricity distribution networks and Thames Tideway.
Sizewell C construction strategy is to replicate the design of Hinkley Point C, using the majority of the same supply chain, but innovating in the way it is delivered to achieve savings in time and cost of around 20%.
Following Financial Completion and Revenue Commencement, Sizewell C is fully funded and is owned by; The Secretary of State for Energy Security and Net Zero representing HM Government, La Caisse, Centrica, EDF and Amber Infrastructure.
Sizewell C is entering an exciting phase of growth as we mature into an independent organisation and continue building one of the UK’s largest and most important energy projects.
We have partnered with EDF for the provision of a number of support services whilst we complete a successful transition out of the EDF group.
At Sizewell C we encourage and embrace diversity and how it can improve our experience and performance at work.

Equal Opportunity

At Sizewell C we encourage and embrace diversity and how it can improve our experience and performance at work. It is a requirement that those who join us have the right to work in the UK. Whilst sponsorship may be a possibility that we can explore, we are fully committed to local recruitment where possible, and those already holding the right to work in the UK.