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Project commercial assistant

Job in City, Vale of Glamorgan, Wales, UK
Listing for: Brook Street
Seasonal/Temporary position
Listed on 2026-01-07
Job specializations:
  • Administrative/Clerical
    Office Administrator/ Coordinator
Salary/Wage Range or Industry Benchmark: 27.82 GBP Hourly GBP 27.82 HOUR
Job Description & How to Apply Below
Location: City

Project Commercial Assistant (Hybrid)
Location: Swindon
Contract: Temporary - 6 months
Hours: 37 hours per week
Pay Rate: 27.82 per hour

Brook Street are recruiting for a Project Commercial Assistant to support a busy asset protection team. This hybrid role offers exposure to a wide range of pre- and post-contract commercial activities and the opportunity to work closely with multiple stakeholders across project teams.

About the Role

You will provide commercial support across a portfolio of projects, assisting with cost compilation, invoicing, and reporting. The role involves working with project and commercial teams to ensure accurate financial management and timely reporting.

Key Responsibilities

Responsibilities may include, but are not limited to:

  • Assisting with report running and compiling data for cost reporting across allocated projects, including cost forecasting, anticipated final cost, cost of work done, gross billing, and current contract value

  • Supporting reporting on commercial aspects of projects, identifying issues early and proposing mitigation actions to the Commercial Manager

  • Preparing and managing cost and invoice breakdowns for a portfolio of projects or schemes

  • Preparing and raising billing in line with relevant agreements and ensuring payments are received and reported correctly

  • Preparing applications for payment and invoices to external clients in accordance with funding agreements, including supporting documentation

  • Supporting final account settlements and internal reconciliation through to project close-out, in line with project plans and agreed timescales

  • Preparing documentation to support resource estimating activities

  • Inputting and maintaining accurate project cost data

Skills, Experience & Qualifications

Essential:

  • Basic knowledge of the construction and/or rail industry

  • Strong numeracy skills

  • Knowledge of construction and rail industry forms of contract

  • Computer literate with good Excel skills

  • Associate member of, or working towards, a relevant professional body

  • Good written and verbal communication skills

Desirable:

  • Educated to A-Level standard or equivalent

  • Experience working in a commercial or project environment

  • Knowledge of estimating, valuation, and cost reporting

Please apply online

Brook Street is proud to support the Armed Forces Covenant and as such, we guarantee to interview all candidates who are veterans or spouses/partners of military personnel, and who meet all the essential criteria for the vacancy.

As a Disability Confident Leader, and holder of the Gold Award status from the Defence Employer Recognition Scheme, Brook Street, as a supplier to the Public Sector Resourcing Framework (PSR), will offer you a guaranteed interview with a PSR Sourcer.

Should you identify as a candidate with a disability and/or as a veteran or spouse/partner of military personnel and meet all the essential criteria for the role, we encourage you to reach out to us via the Brook Street website. Here you will find a link to register your interest and state the role that you are interested in. We are committed to engaging with you.

In cases where we have a high volume of ex-military candidates/military spouses/partners, who meet all of the essential criteria, Brook Street will interview the best candidates from within that group.

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