Commercial Manager

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. Overall, whilst the Company is in the construction phase, the Boards’ principal focus is on the development and construction of Sizewell C on time, on budget and to the highest quality and safety standards. The Company is maturing to meet all these requirements.

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%. The CCO will need to be guided by and incorporate lessons learned from the Hinkley Point C commercial delivery to achieve Sizewell C’s ambition.

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 are now recruiting the below position.

Job Title: Commercial Manager

• Location: London, Ipswich, Suffolk
• Contract: Permanent, full-time.

Closing date: 26/10/2026

What’s in It for You

• Salary: Circa £63,522 (depending on experience)
• Bonus: 5% annual target
• Holiday: 28 days + bank holidays
• Pension: Market-leading (up to 7.5% employee / 15% employer)
• Benefits: Health cover, cycle-to-work scheme, Hybrid working & ongoing professional development

The Commercial Manager is responsible, for any contract assigned to them, for all pre and post contract commercial issues relating to a contract on the SZC project.

Nature and Scope:

• The Commercial Manager is an important role within the SZC Supply Chain Group with accountability to the Senior Commercial Manager for the successful commercial administration of one or more SZC contracts. As such the Commercial Manager is empowered to make decisions around the Principle Accountability areas, under the overall guidance of the Senior Commercial Manager and in accordance with delegated levels of authority.
• As Commercial Manager you will be the primary point of commercial contact on the contract/s assigned to you and will you’ll be required to work closely and pro-actively with the other stakeholders at all levels and across all the teams within Nuclear New Build to ensure that the requirements of the individual contracts and their impact upon the overall SZC Project are successfully delivered.

You will be responsible and accountable for:

Key Site Operational based service contracts which are essential to the delivery of workforce needs, such as catering, accommodation, fixture furniture and equipment (FFE), personal protective equipment (PPE), and Facilities Management (FM).

• You will typically be responsible for a contract or range of contracts between £0-£50m in value subject to level of risk or complexity. Contracts entered into are typically from the NEC Term Service Contract (TSC) suite, and managed on Cemar.

• The day to day management of Assistant Commercial Assistants under your control.
• Providing commercial management of contracts during the execution phase (post-award).
• Commercial management for the delivery of contract final account agreements (close out).
• Responsible for the delivery of the contract in accordance with SZC governance requirements to meet SZC Project and business objectives.
• Professional development of self and people within the team.

Principal Accountabilities:

Execution Phase:

As Commercial Manager you’re responsible for the commercial administration of the contract during the execution phase including commercially leading and managing the contract/s to successful completion to maximise operational and financial performance and minimise commercial risk in order to help support the safe and cost effective delivery of SZC programme and business objectives. You’ll be responsible for knowing the contract including fundamental matters such as: Scope of Work / Services and Associated Programme; Prices and Rates Schedules; Key Personnel and Arrangements for Contract Administration, incentive arrangements along with administration of commercia