Pentagon Technical Services
Accounts Receivable Clerk

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Accounts Receivable Clerk
Company: Pentagon Technical Services
Location: Beaconsfield, Buckinghamshire
Employment Type: Full-time
Working Pattern: Office-based
About Pentagon Technical Services
Pentagon Technical Services is a specialist provider of mission-critical infrastructure services, delivering project management, QA/QC, commissioning, technical fit-out and handover/validation services across major data centre projects internationally.
As the business continues to grow, we are looking for an organised and detail-focused Accounts Receivable Clerk to join our finance team in Beaconsfield.
About the Role
The Accounts Receivable Clerk will be responsible for supporting the day-to-day management of the company's sales ledger and ensuring customer accounts are accurate, payments are allocated correctly and outstanding invoices are followed up promptly.
This is a hands-on role suited to someone with previous experience in accounts receivable, sales ledger or credit control who is looking to develop their career within a growing, project-led business.
You will work closely with the wider finance team, project managers and commercial teams to ensure invoices are raised accurately and payments are received on time.
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Key Responsibilities
- Manage the day-to-day sales ledger and customer accounts.
- Raise and issue customer invoices accurately and on time.
- Allocate customer payments against outstanding invoices.
- Reconcile customer accounts and investigate discrepancies.
- Monitor outstanding invoices and maintain accurate aged debt records.
- Follow up overdue invoices and support credit control activities.
- Respond to customer queries relating to invoices and payments.
- Liaise with project and commercial teams regarding billing requirements.
- Ensure supporting documentation is available for customer invoicing.
- Assist with monthly sales ledger and month-end processes.
- Prepare aged debt and accounts receivable reports.
- Assist with cash collection and cash flow forecasting.
- Maintain accurate customer records within the accounting system.
- Identify and resolve issues that could delay customer payments.
- Support the wider finance team with general accounting duties when required.
About You
We are looking for someone who is:
- Experienced in an Accounts Receivable, Sales Ledger or Credit Control position.
- Highly organised with excellent attention to detail.
- Confident working with numbers and financial information.
- Comfortable communicating with customers and internal stakeholders.
- Able to manage multiple accounts and priorities effectively.
- Proactive in following up outstanding payments.
- Confident using Microsoft Excel.
- Comfortable working to deadlines, particularly around month-end.
- A good communicator with a professional and approachable manner.
- Able to work independently while also contributing to the wider finance team.


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Key Skills
- Accounts Receivable
- Sales Ledger
- Credit Control
- Customer Account Reconciliations
- Invoice Processing
- Payment Allocation
- Aged Debt
- Cash Collection
- Microsoft Excel
What We Offer
- Competitive salary based on experience.
- Opportunity to join a growing international business.
- Beaconsfield-based working environment.
- Exposure to large-scale international data centre projects.
- Opportunity for professional development and career progression.
- Supportive and collaborative finance team.
- Opportunity to develop into a broader accounting role as the business grows.
If you're an experienced Accounts Receivable Clerk, Sales Ledger Clerk or Credit Controller looking for your next opportunity, we'd love to hear from you.
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