Commerical Assistant Sizewell C

Sizewell C; Sizewell; Hybrid; GBP 29,000 - 35,000; Full time

Benefits offered by this job

CIP bonus

Holiday entitlement

Pension contribution

Professional development

Lifestyle benefits

Job summary

Sizewell C is seeking a Commercial Assistant to provide commercial support to the NNB Commercial Management Team on a 12-month fixed-term contract. The role is based in Bristol with a hybrid work pattern (minimum 3 days onsite) and a salary around £32,000 per annum.

Key duties include evaluating contractor applications, processing payments, and administering commercial tools and events. Right to work in the UK is required; the team emphasises collaboration and professional development.

Qualifications

• 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.

Responsibilities

• Provide commercial support to the NNB Commercial Management Team.
• Administer Task Orders, Compensation Events and Early Warnings.
• Monitor and report on commercial aspects of contracts and flag issues early to the Commercial Manager.
• Administer commercial management tools including CEMAR and SAP.

Skills

Relevant work experience

Team collaboration

Contracts knowledge

Communication skills

Tools

CEMAR

SAP

Job description

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

Commercial Assistant (Sizewell C)

Sizewell C

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: 24th September 2026

Job Purpose:

The NNB 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 NNB Commercial Management Team generally as described in the Principal Accountabilities below.

Dimensions:

Reporting to the NNB Commercial Manager.

Principal Accountabilities:

• Providing support to the NNB Commercial Management Team in the following areas:
• 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 and SAP.

At all times operate in accordance with IMS, rules, procedures to ensure that all contracts are administered within delegation of authority and the overall NNB governance / assurance regime.

Nature and Scope:

The NNB Commercial Assistant is an important role within the NNB Commercial Group with accountability to the Commercial Manager and in accordance with delegated levels of authority.

The NNB Commercial Assistant will be required to work closely and pro-actively with the other team members at all levels and across all the teams within Nuclear New Build to ensure that the requirements of the individual contracts and their impact upon the overall SZC Project are successfully delivered.

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.

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.