Our client is seeking a Finance Assistant to join their growing team. The successful candidate will play a key role in supporting the smooth adoption of new finance systems and processes going live in 2026. They will take ownership of weekly payroll for approximately 260 staff using SAGE Payroll, ensuring compliance, accuracy, and timely payments. In addition, they will manage supplier payments, petty cash, staff expenses, and financial exceptions, while maintaining strong financial controls. Duties of Finance Assistant:Weekly Payroll, including accurate payments, pension contributions, and P32 submission.Post payroll journals to the general ledger and maintain payroll recordsOnboard new starters and process leavers, including issuing P45sPrepare and submit annual P11D and timely P46 notifications to HMRCProcess UK supplier invoices for materials, overheads, and ad hoc payments with accurate VAT and GL codingResolve invoice and supplier queries, run payment cycles, and issue remittance advicesReconcile supplier statements and maintain accurate vendor master data with verified bank detailsManage the finance inbox, ensuring all queries and invoices are actioned promptly with nothing missedCount and record petty cash receipts, issue cash floats, and report high balances in line with AML obligationsCompile, review, and process staff expense payments accurately and on scheduleSupport additional ad hoc finance tasks as required Essential:Detail-driven finance professionalProven pay