Interim Finance Systems Lead

OakRock is supporting a values-led organisation to appoint an Interim Finance Systems Lead to deliver critical finance systems improvements and reporting capability.

This role is hands-on and delivery-focused, working closely with finance stakeholders, system partners, and the wider business to improve controls, reporting, and process efficiency.

Finance Systems Improvement (SAP Concur & Business Central)

• Act as the finance lead for SAP Concur purchase management system improvements, working alongside finance teams and SAP Concur partners.
• Perform root cause analysis on delays in goods receipting and invoice allocation that are impacting payment timelines.
• Improve the end-to-end invoice capture-to-payment process to ensure the system is being used to its full capability.
• Resolve processing issues impacting the accuracy and reliability of SAP Concur reporting.
• Deliver a structured review and implementation of improvement opportunities within MS Dynamics 365 Business Central, including:
• Debtor categorisation and reporting
• Bulk remittance processing
• Automated days-to-pay calculations

Debtors & Working Capital

• Conduct a full review of the debtor position and recoverability of aged debt by programme.
• Design and implement a clear debt collection process in collaboration with internal stakeholders to ensure early intervention on aged balances.

• Build Power BI reports from scratch, integrating data from multiple systems.
• Develop management accounts dashboards linked to Business Central.
• Create secure, role-based Power BI reporting for budget holders, comparing actuals to budget and forecast using clear, user-friendly visuals.
• Design end-to-end processes and Power BI dashboards to track programme-related activity, costs, accruals, purchase orders, and payments, replacing manual and fragmented reporting with reliable, structured outputs.

• Strong experience with SAP Concur, particularly from a purchase ledger and process improvement perspective.
• Working knowledge of MS Dynamics 365 Business Central (or similar ERP), with the ability to drive system optimisation.
• Proven experience building Power BI dashboards from the ground up.
• Confident stakeholder manager able to work across finance, operations, and external system partners.
• Pragmatic, delivery-driven mindset with the ability to operate effectively in an interim capacity.