Commercial Manager

Job Description

Contract location: Suffolk, London or Bristol

Contract Type: Office-based, with hybrid working flexibility (typically 2-3 days per week)

Working Pattern: Full time

Closing date: Tuesday 2nd September 2025

We operate on an office-based contract model, but support hybrid working where possible. This means you\’ll need to be based within reasonable travel distance of the office and able to attend in person when business needs require—typically 2-3 days per week, though this may vary by team or project. Flexibility to be on site when needed is essential.

Where can a Commercial Manager be a power for good?

At Sizewell C. We\’re building one of the UK\’s most important infrastructure projects – delivering clean, reliable nuclear energy to six million homes, cutting nine million tonnes of CO2 every year, and creating thousands of skilled jobs.

As a Commercial Manager, you\’ll be at the heart of this mission – helping Britain reach Net Zero and shaping the future of energy.

Your Role

Join our Supply Chain team and lead the commercial management of our Design, Engineering and Construction contracts. You\’ll collaborate with Programme Delivery, Finance, Legal, and suppliers to ensure contracts deliver on cost, quality, and time.

What you\’ll do:

1. Manage contracts from tender to post contract final account.
2. Manage and support contract drafting and negotiations.
3. Transfer best practices from Hinkley Point C to Sizewell C.
4. Drive supplier performance and value for money.
5. Proven experience in contract administration and commercial management.
6. Consultant or Contractor experience is desired.
7. Proven experience of NEC Contract management from Contract award to completion (Option A, C, E). Experience or knowledge of FIDIC is desirable.
8. Strong change management skills and experience in accordance with NEC / FIDIC.
9. Proven experience in cost forecasting and performance report production and monitoring.
10. Strong negotiation, influencing, problem solving and communication skills.
11. Ideally degree level qualified / chartered (RICS, MCIPS).
12. A mindset for team-working, innovation, collaboration, and sustainability.
13. Good organisational skills with ability to quickly adapt to changing situations.
14. Ability to absorb complex information and assess requirements and make recommendations.
15. Experience of CEMAR Contract Management platform desired but not essential.

Apply now and be part of something bigger.

Power in Diversity

Sizewell C is a great place to work, where everyone is welcome. To fulfil our commitment of doing the power of good for Britain, our ambition is to have a workforce which reflects and benefits the society we are part of and serve. Every worker on SZC, wherever they are, should help to create and experience the right environment where everyone on the team understands, respects and embraces diversity with a culture where everyone is treated with equal respect and are all given equal access to opportunities. By valuing the different points of view and experiences that having a diverse team brings, and by fostering an inclusive climate, we will create a great place to work and a more successful project.

We create the right environment where people feel able to bring their whole selves to work. Whilst working together there is mutual trust and appreciation created through the building of meaningful relationships with one another, aligned with our key values:

• Respect: Value the rules and environment in which we operate.
• Positivity: Positively challenge poor quality and performance.
• Humility: Be open to other\’s points of view and ideas, be willing to debate and to compromise.
• Solidarity: One team, working closely together and helping each other.
• Clarity: Communicate clearly and consistently.

Sizewell C Limited (Sizewell C) is a nuclear site licensed company whose 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 was formerly under the majority ownership of the EDF Group but is currently majority owned by HM Government and operates as an independent company. EDF remains a key shareholder in Sizewell C and the business therefore maintains close links to EDF as a part of its \’nuclear family\’.

As a Sizewell C employee, you may wonder why you are contacted by colleagues with an EDF email, or see the EDF logo on portals that you access and/or documentation you receive; this is because 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.

Additional Information

Join the team at Sizewell C. The power of good for Britain. It\’s not every day you get the opportunity to shape the working culture of what will be one of Europe\’s largest construction projects, while also helping Britain to reach its target of Net Zero emissions by 2050. That\’s one of the reasons Sizewell C will be unlike anything you\’ve ever experienced before, and you\’ll need to be an exceptional professional to reach the high standards this critical infrastructure project demands.

The UK is experiencing a nuclear renaissance and Sizewell C – along with its sister project at Hinkley Point – offers a unique opportunity to be part of this exciting era.

Salary and Benefits

• Salary: £52,000-£70,000, depending on experience
• Benefits: Private health cover, Cycle-to-work scheme, Discounts & employee pricing, Ongoing professional development

Why Sizewell C? You\’ll be part of a team tackling climate change head-on – in a culture that values inclusion, innovation, and doing the right thing by each other. Ready to shape the UK\’s energy future?