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For Companies At a Glance
- Tasks: Support the Supply Chain Management Team with contracts and commercial processes.
- Company: Join Sizewell C, a leader in clean nuclear energy and infrastructure projects.
- Benefits: Enjoy a competitive salary, hybrid working, professional development, and employee discounts.
- Why this job: Make a real impact on climate change while growing in a supportive, inclusive environment.
- Qualifications: Experience in commercial or procurement roles and knowledge of contract management is essential.
- Other info: Be part of one of Europe’s largest construction projects and help achieve Net Zero by 2050.
The predicted salary is between 31000 - 36000 £ per year.
Job Description
Be a Power for Good at Sizewell C
Location: Suffolk, London or Bristol
Contract Type: Office-based, with hybrid working flexibility
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.
At Sizewell C, we’re building a better future — one powered by clean, reliable nuclear energy. Our project will supply electricity to six million homes, cut nine million tonnes of CO₂ annually, create thousands of skilled jobs, and support thriving natural habitats. We’re looking for Commercial Assistants to help us deliver one of the UK’s most ambitious infrastructure projects. If you’re ready to make a meaningful impact, this is your opportunity.
The Opportunity
As a Commercial Assistant, you’ll provide essential support to the Supply Chain Management Team. You’ll work closely with colleagues across Nuclear Development to ensure contracts are delivered effectively and contribute to the success of the Sizewell C project.
Key Responsibilities
- Process payment certificates in line with contractual terms.
- Attend valuation and progress meetings to monitor delivery.
- Prepare commercial cost reports, progress metrics, and supplier performance reviews.
- Manage the Early Warning process and maintain commercial tools such as CEMAR and SAP.
What You’ll Bring
- Experience in a commercial or procurement environment.
- Familiarity with industry-standard procurement practices.
- Understanding of contract performance, risk, and change management.
- Knowledge of estimating, valuations, cost reporting, and financial modelling.
Salary & Benefits
Salary: £31,000 – £36,000 (depending on experience)
Bonus: 5% annual incentive
Pension: Up to 7.5% employee contribution, 15% employer contribution
Holidays: 28 days annual leave plus Bank holidays
Additional Benefits: Ongoing professional development, Cycle-to-work scheme, Employee discounts and pricing
Why Join Us?
At Sizewell C, you’ll be part of a team tackling one of the world’s biggest challenges — climate change. We’re committed to doing the right thing by our people, offering a supportive, inclusive environment where your voice is heard and your growth is supported.
Ready to power up your career? Apply now or request the full job description to learn more.
Power in Diversity
Sizewell C is a great place to work, where everyone is welcome. We aim to have a workforce reflecting and benefiting society. We foster an inclusive climate where everyone is treated with respect and given equal access to opportunities. We value diverse points of view and experiences, creating a positive environment where people can bring their whole selves to work. Our key values include:
- Respect: Value the rules and environment in which we operate
- Positivity: Positively challenge poor quality and performance
- Humility: Be open to others’ points of view and ideas
- Solidarity: One team, working closely together
- Clarity: Communicate clearly and consistently
About Sizewell C
Sizewell C is a nuclear site licensed company dedicated to designing, financing, constructing, operating, maintaining, and eventually decommissioning the nuclear power plant at Sizewell C in Suffolk. Formerly under EDF Group ownership, it is now majority owned by HM Government and operates as an independent company. EDF remains a key shareholder, maintaining close links as part of its ‘nuclear family’. As an employee, you may see EDF branding as we partner with EDF for support services during our transition out of the EDF group.
Additional Information
Join the team at Sizewell C and help Britain reach its Net Zero emissions target by 2050. This is a unique opportunity to shape one of Europe’s largest construction projects and be part of the UK’s nuclear renaissance. With government support and public backing, we are progressing towards Financial Investment Decision in early 2025 and construction thereafter. Apply now to be part of this exciting journey.
By submitting an application, you acknowledge reading and understanding Sizewell C’s and EDF’s employee privacy policies. EDF will process and share your application information on behalf of Sizewell C.
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Commercial Assistant employer: www.findapprenticeship.service.gov.uk - Jobboard
Contact Detail:
www.findapprenticeship.service.gov.uk - Jobboard Recruiting Team
StudySmarter Expert Advice 🤫
We think this is how you could land Commercial Assistant
✨Tip Number 1
Familiarise yourself with the Sizewell C project and its goals. Understanding the significance of clean energy and how your role as a Commercial Assistant contributes to this mission will help you stand out during interviews.
✨Tip Number 2
Network with professionals in the nuclear energy sector. Attend industry events or join relevant online forums to connect with people who can provide insights about the company culture and expectations at Sizewell C.
✨Tip Number 3
Brush up on your knowledge of procurement practices and contract management tools like CEMAR and SAP. Being able to discuss these topics confidently will demonstrate your readiness for the role.
✨Tip Number 4
Prepare questions that show your interest in the company's commitment to sustainability and diversity. This not only reflects your values but also aligns with Sizewell C's mission and culture.
We think you need these skills to ace Commercial Assistant
Some tips for your application 🫡
Understand the Role: Before applying, make sure to thoroughly read the job description for the Commercial Assistant position. Understand the key responsibilities and required skills, so you can tailor your application accordingly.
Tailor Your CV: Customise your CV to highlight relevant experience in commercial or procurement environments. Emphasise your familiarity with industry-standard practices and any specific knowledge related to contract performance and financial modelling.
Craft a Compelling Cover Letter: Write a cover letter that not only outlines your qualifications but also expresses your enthusiasm for contributing to Sizewell C's mission of delivering clean energy. Mention how your values align with their commitment to respect, positivity, and inclusivity.
Proofread Your Application: Before submitting, carefully proofread your CV and cover letter for any spelling or grammatical errors. A polished application reflects attention to detail, which is crucial for a role that involves managing contracts and reports.
How to prepare for a job interview at www.findapprenticeship.service.gov.uk - Jobboard
✨Understand the Role
Make sure you have a clear understanding of the responsibilities of a Commercial Assistant. Familiarise yourself with key tasks such as processing payment certificates and preparing commercial cost reports, as this will help you demonstrate your knowledge during the interview.
✨Showcase Relevant Experience
Be prepared to discuss your experience in a commercial or procurement environment. Highlight specific examples where you've successfully managed contracts or contributed to project success, as this will show your potential employer that you can add value to their team.
✨Demonstrate Your Knowledge of Industry Practices
Brush up on industry-standard procurement practices and contract performance management. Being able to speak confidently about these topics will impress the interviewers and show that you're well-prepared for the role.
✨Emphasise Teamwork and Communication Skills
Since the role involves working closely with colleagues across various teams, be ready to discuss your teamwork and communication skills. Share examples of how you've collaborated effectively in the past, as this aligns with Sizewell C's values of respect and solidarity.
