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Assistant Commercial Manager (Sizewell C)

Job Category:  Construction Logistics
Contract Partner Company:  Jobs Service
Employing Company:  Sizewell C

The Sizewell C Jobs Service supports local people into exciting, long-term careers across our Project.#SZCJobs

 

 

Assistant Commercial Manager
Sizewell C
 

Location: London, Manchester, Suffolk.
Contract: Permanent, full-time. 
  

What’s in It for You:
 

Salary: Circa £47,000 er annum (depending on experience)
Bonus: 5% annual incentive 
Pension: Up to 7.5% employee / 15% employer contribution 
Leave: 28 days holiday plus bank holidays 
Hybrid Working: Typically, 2–3 days in the office per week, with flexibility based on business needs 
 

Closing Date: Tuesday 8th September 2026
 

Your Impact
 

Our Commercial Systems, Data, Governance and Performance team plays a key role in shaping how commercial systems, data and reporting support one of the UK's most largest and exciting infrastructure projects. As an Assistant Commercial Manager, you will be working alongside an experienced Commercial Manager and a diverse team of stakeholders to help support, develop and enhance our commercial systems, while delivering the reporting insights that are essential to successful project delivery.
 

This is a fantastic opportunity for someone with a background in commercial systems, reporting or data management who wants to broaden their experience within a major infrastructure programme. You'll gain exposure to large-scale procurement and commercial processes, influence how systems are used and developed, and work closely with stakeholders to improve data quality, governance and performance visibility. The role suits someone who enjoys solving problems, working with data, driving improvements and turning information into meaningful insight. You'll need strong attention to detail, the ability to prioritise effectively, and confidence communicating with a wide range of internal and external stakeholders.
 

With exposure to multiple systems, opportunities to influence future ways of working, and clear development potential, this role offers an excellent platform for building a long-term career in commercial systems, reporting and commercial management.


Accountabilities
 

Work with internal teams, delivery partners and system specialists to support, maintain and continuously improve our commercial systems.
Play a key role in system enhancements and new implementations, contributing to design, testing and deployment to ensure solutions meet business needs.
Manage and coordinate system access and enhancement requests, helping to keep commercial processes running efficiently and maintaining strong controls.
Develop and deliver engaging training materials that help teams understand and adopt commercial processes and systems.
Lead responses to commercial performance and reporting queries, providing clear insights and support to a wide range of stakeholders.
Collaborate with teams across the business to improve data management, reporting and performance visibility.
 

Organisation Chart
 

Reporting to Senior Commercial Manager – Systems, data and Performance.
Close relationship with 2 Commercial Managers.
 

Knowledge & Skills
 

Track record in building effective relationships with stakeholders,  influencing and presenting complex ideas confidently
Excellent written and verbal communications skills.
Good working knowledge of commercial end-to-end systems used throughout the contract lifecycle eg sourcing tools, contract management, ERP products
Good understanding of reporting tools and analytics, including developing and creating reports
Proven ability to engage senior leaders and stakeholders effectively.


Qualifications & Experience
 

The post holder should ideally hold graduate / post graduate qualification(s) related to Supply Chain or a similar professional discipline
A minimum of 3 years’ experience in a system / performance / data management role.
Demonstrated ability to develop and manage cross-functional relationships and understand and manage a complex portfolio of responsibilities.
Demonstrated success in delivering process and system improvements in support of broader business objectives.
Experience in working with commercial systems – tools covering activities like eSourcing  (Jaggaer) Purchase to Pay (SAP 4 HANA, Oracle) and Contract Management (CEMAR, Unifier)
 

Why Join Us  


A major infrastructure project with national impact  
Hybrid working with flexibility built in  
Competitive salary, bonus and benefits  
Clear progression and development opportunities  
Supportive, collaborative team environment   

 

 

 

For this role you must have evidence of right to work in the UK. As a project, we do not discriminate on the grounds of age, gender, race, colour, religion, disability or sexual orientation, and we welcome applications from all sections of the community.

The Sizewell C Jobs Service supports local people into exciting, long-term careers across our Project.#SZCJobs

 

 

Assistant Commercial Manager
Sizewell C
 

Location: London, Manchester, Suffolk.
Contract: Permanent, full-time. 
  

What’s in It for You:
 

Salary: Circa £47,000 er annum (depending on experience)
Bonus: 5% annual incentive 
Pension: Up to 7.5% employee / 15% employer contribution 
Leave: 28 days holiday plus bank holidays 
Hybrid Working: Typically, 2–3 days in the office per week, with flexibility based on business needs 
 

Closing Date: Tuesday 8th September 2026
 

Your Impact
 

Our Commercial Systems, Data, Governance and Performance team plays a key role in shaping how commercial systems, data and reporting support one of the UK's most largest and exciting infrastructure projects. As an Assistant Commercial Manager, you will be working alongside an experienced Commercial Manager and a diverse team of stakeholders to help support, develop and enhance our commercial systems, while delivering the reporting insights that are essential to successful project delivery.
 

This is a fantastic opportunity for someone with a background in commercial systems, reporting or data management who wants to broaden their experience within a major infrastructure programme. You'll gain exposure to large-scale procurement and commercial processes, influence how systems are used and developed, and work closely with stakeholders to improve data quality, governance and performance visibility. The role suits someone who enjoys solving problems, working with data, driving improvements and turning information into meaningful insight. You'll need strong attention to detail, the ability to prioritise effectively, and confidence communicating with a wide range of internal and external stakeholders.
 

With exposure to multiple systems, opportunities to influence future ways of working, and clear development potential, this role offers an excellent platform for building a long-term career in commercial systems, reporting and commercial management.


Accountabilities
 

Work with internal teams, delivery partners and system specialists to support, maintain and continuously improve our commercial systems.
Play a key role in system enhancements and new implementations, contributing to design, testing and deployment to ensure solutions meet business needs.
Manage and coordinate system access and enhancement requests, helping to keep commercial processes running efficiently and maintaining strong controls.
Develop and deliver engaging training materials that help teams understand and adopt commercial processes and systems.
Lead responses to commercial performance and reporting queries, providing clear insights and support to a wide range of stakeholders.
Collaborate with teams across the business to improve data management, reporting and performance visibility.
 

Organisation Chart
 

Reporting to Senior Commercial Manager – Systems, data and Performance.
Close relationship with 2 Commercial Managers.
 

Knowledge & Skills
 

Track record in building effective relationships with stakeholders,  influencing and presenting complex ideas confidently
Excellent written and verbal communications skills.
Good working knowledge of commercial end-to-end systems used throughout the contract lifecycle eg sourcing tools, contract management, ERP products
Good understanding of reporting tools and analytics, including developing and creating reports
Proven ability to engage senior leaders and stakeholders effectively.


Qualifications & Experience
 

The post holder should ideally hold graduate / post graduate qualification(s) related to Supply Chain or a similar professional discipline
A minimum of 3 years’ experience in a system / performance / data management role.
Demonstrated ability to develop and manage cross-functional relationships and understand and manage a complex portfolio of responsibilities.
Demonstrated success in delivering process and system improvements in support of broader business objectives.
Experience in working with commercial systems – tools covering activities like eSourcing  (Jaggaer) Purchase to Pay (SAP 4 HANA, Oracle) and Contract Management (CEMAR, Unifier)
 

Why Join Us  


A major infrastructure project with national impact  
Hybrid working with flexibility built in  
Competitive salary, bonus and benefits  
Clear progression and development opportunities  
Supportive, collaborative team environment   

 

 

 

For this role you must have evidence of right to work in the UK. As a project, we do not discriminate on the grounds of age, gender, race, colour, religion, disability or sexual orientation, and we welcome applications from all sections of the community.

Why Join Us?

For more than 60 years, nuclear power stations in the UK have been quietly keeping Britain fuelled with massive amounts of home-grown energy.

Our teams up and down the country are proudly continuing to serve the nation – but they also have an eye on the future.

EDF is leading the UK's nuclear renaissance with the construction of a new nuclear power station at Hinkley Point C and plans for a new power station at Sizewell C in Suffolk.

Nuclear power is the most reliable, low-carbon energy source currently available to the UK. EDF is playing a key role in the development of nuclear sites, while Hinkley Point C will provide low-carbon electricity to meet 7% of the UK demand. The project is already making a positive impact on the local and national economy as well as boosting skills and education.

We’re not just building new nuclear power stations. We’re developing careers, upskilling generations and creating thousands of employment and apprenticeship opportunities across a variety of skills areas.

It takes a special kind of person to work in the nuclear energy industry and although we have thousands of them there’s always a need for more.

Our industry has a mind-boggling range of opportunities and more jobs, and in more places, than you might think. But it’s also an industry which is changing.

We’re a responsible business and proud to be Britain’s biggest generator of zero carbon electricity. With size, age and experience, we believe we can do even more.

Apply now »