Estimating Assistant (Sizewell C)

Estimating Assistant

Sizewell C

Location: London, Bristol, Manchester, Suffolk – hybrid, 3 days per week in the office

Contract Type: Permanent – Office-based with hybrid flexibility (typically 3 days per week in the office)

Working Pattern: Full time

Closing Date: Thursday 30th July 2026

Salary: Circa £32,000 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

As the Estimating Assistant you will be reporting to Senior Quantity Surveyors in undertaking a range of quantity surveying activities covering all aspects of civil works. This role would suit someone early in their commercial or quantity surveying career who has strong administration skills and wants to develop broader commercial management experience and/or pursue a formal surveying qualification within a major infrastructure project.

Key Responsibilities

• Undertake measurement and billing of quantities in accordance with standard methods of measurement.
• Compile details of information used and assumptions made when undertaking measurement tasks.
• Codify measured works items to prescribed cost and work breakdown structures.
• Collect, analyse and report cost data, including taking actions to address source data.
• Collate and manage contemporary records.
• Assist in the preparation of estimates and cost reports including the collation of supporting documentation.
• Support the tender process including financial assessment and the preparation of Tender Reports.
• Assist project teams in the contract administration and commercial management of projects within the Civil Works programme.
• Monitor budgets and forecasting, cost auditing, progress monitoring and reporting.
• Actively support teams in the timely delivery of commercial management and assurance.
• Assist senior team members with the legal and contractual issues on projects.
• Manage document control, including the maintenance of registers and schedules.
• Perform arithmetic and other basic checking of work undertaken by others.
• Work to budgets and timescales as agreed from time to time with senior managers.
• Support and work collaboratively with the wider team.
• Maintain and administer commercial management systems such as CEMAR, SAP, and Candy.
• Support successful contract delivery and help manage the commercial impact of contracts on the wider Sizewell C project.

Skills & Experience

• Preferably degree educated in a relevant discipline (min 2.1), together with demonstrable relevant experience gained within a similar role.
• Competent IT skills – proficient in Microsoft Office (Excel essential).
• Strong communication and stakeholder management skills.
• Good organisational skills – with the ability to work independently and manage competing deadlines.
• Ability to work effectively within a team and across multiple functions.
• Good attention to detail and administrative capability.

• Experience of the commercial management and contract administration processes, particularly those related to cost management, payment, variations, change management and final account settlement.

• Commercial awareness.
• Organisation and prioritisation.
• Accuracy and attention to detail.
• Problem‑solving.
• Stakeholder communication.
• Team collaboration.
• Governance and compliance focus.

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.