Balfour Beatty plc
Site Support Assistant Cost Supervisor

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About The Role
Our projects are more than just your opportunity to make your mark. They’re an opportunity to stretch, test and develop your expertise. Join Balfour Beatty as an Assistant Cost Supervisor in Sheffield, and you’ll deliver complex work that really matters to our business, and the world around you.
You'll provide professional, efficient, and effective support services to project teams, helping to ensure the smooth day-to-day operation of our projects. Acting as a key support function on site, you will play an important role in enabling successful project delivery through high-quality administrative, financial, and operational support.
You will be responsible for delivering consistent site support services in line with Balfour Beatty policies, procedures, and best practices, ensuring accuracy, compliance, and efficiency across all activities. Working closely with project teams and stakeholders, you will help maintain robust processes, support project controls, and contribute to the successful delivery of key business objectives.
What you'll be doing
Responsibilities
As a valued member of the team, you will play a key role in supporting project delivery through accurate cost management, supplier engagement, and efficient financial administration. Your responsibilities will include:
- Producing accurate monthly project cost reports and maintaining effective control of project expenditure.
- Reviewing and managing team SharePoint records, including archiving documentation and processing supplier receipts.
- Investigating and resolving purchase order queries in collaboration with Procurement teams, site teams, and suppliers.
- Processing Goods Received Notes (GRNs), including bulk uploads, ensuring transactions are completed accurately and on time.
- Managing invoice queries on a daily basis and working proactively to achieve timely resolution.
- Building strong relationships with suppliers, supporting the retrieval of Proof of Delivery (POD) documentation, resolving queries, and providing excellent supplier engagement.
- Ensuring all financial transactions are processed promptly and accurately to support project reporting requirements.
- Applying site support processes consistently across all projects, ensuring compliance with company policies and procedures.
- Demonstrating and championing the Balfour Beatty Values in all aspects of your work.
- Maintaining a relentless focus on Zero Harm, promoting a safe and healthy working environment for all.
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Who we're looking for
We are looking for an experienced and proactive individual with a background in site administration, project costing, and financial support within a construction or engineering environment.
You will have previous experience producing, monitoring and reporting project costs, either on a major construction project or across multiple sites. Strong stakeholder management skills are essential, with the ability to build effective working relationships at all levels, both internally across Balfour Beatty and externally with suppliers and other partners.
This is a role with significant responsibility, requiring a high level of accuracy and attention to detail when managing receipting, invoice processing and project cost control activities.
You'll Also Have
- Experience in a Site Administrator, Project Support, Cost Administrator or similar role within the construction or engineering sector.
- A proven ability to produce and report on project costs accurately and efficiently.
- Strong communication and relationship-building skills, with confidence working with a diverse range of stakeholders.
- The ability to apply and comply with Balfour Beatty's site support processes, policies and procedures.
- Excellent organisational skills and the ability to manage multiple priorities in a fast-paced environment.
- A proactive approach to problem-solving and query resolution.
- Working knowledge of Oracle, or a similar ERP/cost management system, would be advantageous.
- An understanding of construction or engineering working rule agreements would be beneficial.
This is an excellent opportunity for someone who enjoys supporting successful project delivery through effective financial administration, strong stakeholder engagement and attention to detail.
Why work for us
Day in, day out, our teams deliver some of the UK’s most ambitious, exciting and meaningful projects; developing, building and maintaining the vital infrastructure that supports national economies and strengthens communities.
Why join us?
Benefits
As if contributing to and supporting work that makes life better for millions wasn’t rewarding enough, we offer a full range of benefits too. You’ll have the freedom to shape the package that’s right for you and your life. Here are some of our key benefits:
- Smart working, giving you more flexibility such as staggered start and finish times, with up to 40% remote working, where roles allow.
- 25 days paid annual leave (pro rata)
- Family friendly policies which include 28 weeks full pay for maternity/adoption leave and four weeks full pay for paternity/partners leave
- Pension, share incentive plan, volunteering leave, recognition schemes and much more…


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About Us
Balfour Beatty Group Enabling Functions are Legal, Finance, IT and Procurement, Communications, Health Safety and Environment, HR and Sustainability. Together, they support delivery of our Build to Last strategy whilst improving efficiencies and standardising our approach, systems and processes.
Diversity and inclusion
At Balfour Beatty we believe that diversity and inclusion are essential components of any successful, happy workplace. Through our Value Everyone Diversity and Inclusion Strategy and Action Plan, we are growing our diverse workforce and developing our inclusive culture where everyone is able to thrive and reach their full potential, regardless of their identity or background. To find out how we are making this a reality, visit www.balfourbeatty.com/diversityandinclusion
To help and support us with our desired commitment to create an inclusive culture we are members of WISE, enei, Business Disability Forum and the Association for Black and Minority Ethnic Engineers (AFBE). In 2020, we signed the Audeliss and Involve Open Letter to demonstrate our commitment to taking key long term and sustainable actions on Black Inclusion. Balfour Beatty is also a Gold Award holder in the Ministry of Defence 'Employer Recognition Scheme' and actively encourage applications from Armed Forces personnel, veterans and reservists.
As a Disability Confident Employer, we are committed to working with people who have disabilities and long-term health conditions to remove barriers for them in obtaining employment. We are also committed to offering applicants with a disability an interview if they meet the minimum requirements for the role. For more info, visit: https://disabilityconfident.campaign.gov.uk/
We are looking to continually improve our resourcing process and ensure that it is fair and inclusive for all. If you have any feedback on the process, please share this with us at: candidaterecruitmentqueries@balfourbeatty.com
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