Location: Hybrid, Aztec West, Bristol (minimum 3 days per week onsite). 

 
Employment type: 12 Month Fixed Term Contract

 
Salary: Circa £32,000 per annum -dependent on experience

Benefits: 

5% CIP bonus 
28 days holiday, plus bank holidays 
Contributory pension of up to 7.5% employee/15% employer Ongoing professional development 
Other lifestyle benefits 

Closing date: 19/10/2026

The Commercial Assistant is responsible, on any contract assigned to them, for providing commercial support to the Commercial Management Team.

Providing general commercial support to the Commercial Management Team generally as described in the Principal Accountabilities below.

Principal Accountabilities: 

• Assessment and valuation of Contractor’s applications and the processing of payment certificates in accordance with the contractual terms and conditions.
• Administration of Task Orders, Compensation Events and Early Warnings.
• Monitor and report on commercial aspects of the contract and/or project flagging issues at the earliest opportunity to the Commercial Manager.
• Administration of commercial management tools including, but not limited to, CEMAR & SAP.

Knowledge, Skills, Qualifications & Experience: 

• Have relevant work experience with ability to demonstrate a track record of successful contract administration/goods receipting.
• Experience of working as part of a team within a commercial environment.
• Good working knowledge of contracts, basic estimating, valuations, cost reporting and financial modelling is desirable.
• Good communication skills to command professional respect at all levels is essential.

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 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. 

When joining Sizewell C, 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.

At Sizewell C we encourage and embrace diversity and how it can improve our experience and performance at work.?It is a requirement that those who join us have the right to work in the UK. Whilst sponsorship may be a possibility that we can explore, we are fully committed to local recruitment where possible, and those already holding the right to work in the UK. ?

To be appointed to this role, you will need to meet the criteria for Security Vetting, which will, ordinarily, require you to have been a resident of the UK for at least three of the past five years.