Accounts Payable Specialist; Sub

Location: Buntingford, Hertfordshire, UK

Datalec Precision Installations (DPI) is a leading provider of data centre design, supply, build, and managed services. We are committed to delivering seamless and integrated solutions for data centre operators worldwide. Our team is dedicated to maintaining high standards of service and excellence in every project we undertake.

We are seeking an Accounts Payable Specialist (Subcontract) to join our team in Buntingford. This role is responsible for the administration, verification, and processing of subcontractor applications and invoices across Datalec’s data centre construction projects.

Reporting directly to the Head of Commercial, the role supports Project Commercial Teams by ensuring accurate cost capture, timely subcontractor payments, robust financial controls, and compliance with contractual payment obligations.

The role supports subcontract invoice processing for all DPI entities worldwide and ensures invoices comply with applicable contractual, financial, taxation, VAT, and regulatory requirements in each relevant jurisdiction. The position requires practical experience of overseas subcontract invoice processing, including multi-entity, multi-currency, and cross-border transactions.

• Receive, review, and process subcontractor invoices for all DPI entities worldwide.
• Verify payment applications against subcontract agreements, purchase orders, approved variations, project budgets, and agreed contract milestones.
• Ensure applications include all required contractual, statutory, tax, and commercial supporting documentation.
• Review claimed values against certified progress and approved works.
• Monitor retention, contra charges, back charges, and other commercial adjustments.
• Maintain accurate records of committed expenditure and outstanding liabilities.
• Ensure payments are processed in accordance with contractual payment terms and company procedures.
• Support Commercial Managers and Quantity Surveyors in the valuation, certification, and payment process.
• Track subcontract commitments against approved project budgets.
• Assist with monthly Cost Value Reconciliation (CVR) processes.
• Ensure approved variations are accurately reflected within payment records.
• Provide accurate cost information for forecasting, cash flow management, and project reporting.
• Identify cost trends, risks, and potential overspend areas.
• Maintain subcontractor cost trackers and payment schedules.
• Produce reports detailing invoice status, accrued costs, payment forecasts, committed spend, and supplier liabilities.
• Support monthly, year-end, and month-end reporting requirements.
• Identify and report duplicate invoices, cost anomalies, discrepancies, and commercial risks.
• Act as the primary point of contact for subcontractor payment and invoice enquiries.
• Liaise with Project Managers, Commercial Managers, Buyers, Operations Teams, and Finance personnel to obtain approvals and resolve discrepancies.
• Develop positive working relationships with subcontractors and suppliers.
• Escalate unresolved commercial, compliance, tax, or payment issues where appropriate.
• Ensure all subcontract payments comply with company procedures, delegated authorities, contractual obligations, and project financial controls.
• Review subcontractor invoices for compliance with applicable construction tax and withholding regimes, including CIS, RCT, and equivalent local regulations.
• Verify the correct VAT or indirect tax treatment, including domestic VAT, reverse charge, cross-border, and jurisdiction‑specific requirements where applicable.
• Ensure invoices contain the statutory information and supporting documentation required for processing, payment, and audit purposes.
• Support subcontractor…