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Senior Commercial Manager (Sizewell C)

Job Category:  Other
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

 

 

Senior Commercial Manager
Sizewell C
 

Contract Type:  Permanent - Office-based with hybrid flexibility (typically 3 days p/w in the office) 
Working Pattern: Full time
Closing Date:  Sunday 16th August 2026
Location: London
Salary: Circa £78,000 depending on experience
Bonus: 5% annual incentive
Pension: Up to 7.5% employee contribution / 15% employer contribution
Holiday: 28 days plus bank holidays
Benefits: Flexible benefits
 

Impact:


Sizewell C is one of the UK's most ambitious infrastructure projects—a next-of-a-kind nuclear power station that will deliver clean, reliable energy for generations. Following our Final Investment Decision, construction is fully greenlit. This is your opportunity to play a key role in delivering a nationally significant project that will support Britain's energy security and Net Zero ambitions.
 

We’re looking for a seasoned commercial professional with extensive experience delivering major programmes, ideally within heavy civils or large-scale engineering and infrastructure projects valued between £10m and £100m+. You’ll bring a deep understanding of construction technology, cost drivers, and supply chain management, combined with strong working knowledge of NEC3/NEC4 contracts—particularly in contract management and administration. Your ability to draft position papers, author change events, evaluate complex quotations, and produce clear commercial reports will set you apart.
 

What You’ll Doing:
 

Leading the commercial management of major design programmes within heavy civils or large-scale engineering and infrastructure projects. 
Managing and administering NEC3 and NEC4 PSC and bespoke SZC contracts, ensuring compliance with contract conditions and effective delivery. 
Preparing and maintaining key commercial documentation, including early warning notices, compensation events and programme submissions. 
Drafting position papers, prepare commercial reports and author change events to support project decisions. 
Applying your understanding of construction technology, cost drivers and supply chain management to optimise outcomes. 
Mentoring and developing Commercial Managers and Assistant Commercial Managers, building capability across the commercial function. 
Engaging with senior stakeholders and clients, providing clear advice and updates. 
Taking ownership of challenges and deliver solutions from start to finish.
Contributing to strategic commercial planning and decision-making to support project success. 
 

What You’ll Bring 


Proven experience in major projects and NEC3/4 contracts 
Strong commercial, negotiation, and stakeholder management skills 
Knowledge of UK contract law and procurement best practices 
Degree or equivalent experience 
Professional membership (RICS, ICES, CIOB, CIPS) desirable or working towards chartership. 
 

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  

 
Behavioural Competences   

 
Humility 


Recognise the value brought from different cultures and experiences 
Be open to other’s points of view and ideas, be willing to debate and to compromise 
 

Positivity 
 

Positively challenge poor quality and performance 
Identify solutions at the lowest possible level 
Encourage tier 1s and others to bring new ideas forward 
 

Respect 


Value the rules and environment in which we operate  
Give and receive feedback with respect  
Embrace and engage with new people and ideas 
 

Solidarity 
 

One team, working closely together and helping each other 
Empowered teams always looking forward. 
Shared responsibility for delivery the project outcomes 
 

Clarity 

 
Communicate clearly and consistently  
Promote collaboration and team alignment  
Clearer and faster decision making  
Drive simplification at all levels 


If this sounds like the next step in your career, we’d love to hear from you. Apply today.

 

 

 

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

 

 

Senior Commercial Manager
Sizewell C
 

Contract Type:  Permanent - Office-based with hybrid flexibility (typically 3 days p/w in the office) 
Working Pattern: Full time
Closing Date:  Sunday 16th August 2026
Location: London
Salary: Circa £78,000 depending on experience
Bonus: 5% annual incentive
Pension: Up to 7.5% employee contribution / 15% employer contribution
Holiday: 28 days plus bank holidays
Benefits: Flexible benefits
 

Impact:


Sizewell C is one of the UK's most ambitious infrastructure projects—a next-of-a-kind nuclear power station that will deliver clean, reliable energy for generations. Following our Final Investment Decision, construction is fully greenlit. This is your opportunity to play a key role in delivering a nationally significant project that will support Britain's energy security and Net Zero ambitions.
 

We’re looking for a seasoned commercial professional with extensive experience delivering major programmes, ideally within heavy civils or large-scale engineering and infrastructure projects valued between £10m and £100m+. You’ll bring a deep understanding of construction technology, cost drivers, and supply chain management, combined with strong working knowledge of NEC3/NEC4 contracts—particularly in contract management and administration. Your ability to draft position papers, author change events, evaluate complex quotations, and produce clear commercial reports will set you apart.
 

What You’ll Doing:
 

Leading the commercial management of major design programmes within heavy civils or large-scale engineering and infrastructure projects. 
Managing and administering NEC3 and NEC4 PSC and bespoke SZC contracts, ensuring compliance with contract conditions and effective delivery. 
Preparing and maintaining key commercial documentation, including early warning notices, compensation events and programme submissions. 
Drafting position papers, prepare commercial reports and author change events to support project decisions. 
Applying your understanding of construction technology, cost drivers and supply chain management to optimise outcomes. 
Mentoring and developing Commercial Managers and Assistant Commercial Managers, building capability across the commercial function. 
Engaging with senior stakeholders and clients, providing clear advice and updates. 
Taking ownership of challenges and deliver solutions from start to finish.
Contributing to strategic commercial planning and decision-making to support project success. 
 

What You’ll Bring 


Proven experience in major projects and NEC3/4 contracts 
Strong commercial, negotiation, and stakeholder management skills 
Knowledge of UK contract law and procurement best practices 
Degree or equivalent experience 
Professional membership (RICS, ICES, CIOB, CIPS) desirable or working towards chartership. 
 

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  

 
Behavioural Competences   

 
Humility 


Recognise the value brought from different cultures and experiences 
Be open to other’s points of view and ideas, be willing to debate and to compromise 
 

Positivity 
 

Positively challenge poor quality and performance 
Identify solutions at the lowest possible level 
Encourage tier 1s and others to bring new ideas forward 
 

Respect 


Value the rules and environment in which we operate  
Give and receive feedback with respect  
Embrace and engage with new people and ideas 
 

Solidarity 
 

One team, working closely together and helping each other 
Empowered teams always looking forward. 
Shared responsibility for delivery the project outcomes 
 

Clarity 

 
Communicate clearly and consistently  
Promote collaboration and team alignment  
Clearer and faster decision making  
Drive simplification at all levels 


If this sounds like the next step in your career, we’d love to hear from you. Apply today.

 

 

 

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 »