Assistant Cost Manager

Join Our Team
We are looking for a highly organised and detail-focused Assistant Cost Manager to support the successful financial management of our UK and international projects. This is an excellent opportunity for someone seeking to develop their career in cost management, finance, or project controls within a fast-paced and growing business.

Working closely with our Cost Manager, Quantity Surveyors, Contracts Managers, and wider operational teams, you’ll play a key role in ensuring project costs are accurately recorded, monitored, and reported.

This role is a 13-month fixed term contract.

What you’ll be doing:
As an Assistant Cost Manager, you’ll support the day-to-day cost management of multiple projects by:

• Updating invoices and purchase orders within project cost reports in a timely manner
• Allocating costs to the correct  cost packages to support effective budget management
• Working collaboratively with  teams across the business to ensure accurate cost allocation
• Assisting with project forecasting and highlighting changes in spend as they arise
• Monitoring project expenditure against invoices received
• Providing ad hoc credit control  support when required
• Participating in regular meetings with Quantity Surveyors and Contracts Managers
• Producing project cost information for stakeholders, including senior management
• Updating monthly spend reports for Project Managers

What We’re Looking For
We’re interested in hearing from candidates who are:

• Currently studying towards an AAT qualification, or
• Have previous experience within a finance, accounts, project support, or project administration role

Key Skills

• Confident user of Microsoft Office, particularly Excel
• Strong communication and interpersonal skills
• Excellent attention to detail and accuracy
• Ability to prioritise and manage a varied workload
• Able to work independently and as part of a team
• Strong organisational and time management skills
• Full UK driving licence

What you’ll get from BSR

• Monthly social events, including team lunches, breakfasts, volunteering days, and Christmas and summer      parties.
• Hybrid working options where role requirements allow.
• Enhanced maternity, paternity  and adoption policies.
• Annual bonus scheme to recognise  your contribution.
• Employee referral scheme.
• Employee Assistance Programme with 24/7 support.
• One funded professional  membership per year.
• 25 days’ annual leave plus bank  holidays, with the option to roll over up to 5 days.
• Long service recognition scheme.
• Private health insurance.
• Life insurance.
• Pension.

Closing date: 14th September 2026  

We encourage you to apply as soon as possible, as this advert may close early if we receive a high number of applications.

Our commitment We’re proud to be a workplace where individuality is valued. If you’re motivated by our purpose and feel you could contribute, we encourage you to apply, even if you don’t meet every requirement.