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From the 31st October 2025 our offices will be moving! We will now be located at The Sanderum Centre, 30A Upper High Street, Thame, OX9 3EX. As our business now operates under a hybrid model, we are no longer available everyday for a walk in service, therefore please call us on 01844 212666 to book an appointment to come and see us. |
Senior Finance Administrator
Overview
The Senior Finance Administrator plays a key role in ensuring the smooth and accurate running of the finance function. Supporting the wider team, this role is responsible for maintaining strong financial controls, ensuring compliance with HMRC regulations (including CIS and VAT), and driving continuous improvement across finance processes. You will also support and mentor junior team members.
Key ResponsibilitiesAccounts Payable & Payment Control
Manage end-to-end supplier and subcontractor invoice processing
Ensure accurate coding, approvals, and compliance with CIS and VAT regulations
Oversee weekly and monthly payment runs
Maintain supplier accounts and resolve discrepancies
Complete monthly bank reconciliations
Construction Finance & Compliance
Prepare and submit monthly CIS returns
Ensure correct application of CIS and reverse charge VAT
Set up and maintain supplier and subcontractor records (Sage/QuickBooks)
Liaise with suppliers and subcontractors regarding payments and queries
Accounts Receivable & Credit Control
Oversee accurate sales invoicing, including retentions and CIS
Reconcile sales against project forecasts
Manage credit control processes and follow up on overdue payments
Maintain aged debtor reporting
Reporting & Compliance
Complete key monthly reconciliations (e.g. bank, vehicles, tools, intercompany)
Prepare and submit quarterly VAT returns
Maintain accurate, audit-ready financial records
Ensure strong internal controls and up-to-date documentation
Process Improvement & Team Support
Support and mentor finance team members
Assist in improving processes and systems
Develop knowledge of finance regulations and systems
Provide cover across finance and admin functions when required
Skills & Experience
3–5 years experience in a finance role (construction/CIS experience desirable)
Strong knowledge of accounts payable, receivable, and reconciliations
Experience with CIS and reverse charge VAT (or willingness to learn)
Proficient in Sage and/or QuickBooks
High attention to detail and strong numerical skills
Excellent communication and organisational skills
Ability to manage workload independently and meet deadlines
Professional, discreet, and process-driven
Qualifications
AAT Level 3 or 4 (or equivalent experience)
GCSE Maths & English (Grade C/4 or above)
Further qualifications (ACCA/CIMA) advantageous
CIS or construction finance training beneficial
Key Performance Indicators
Accurate and timely processing of invoices and payments
On-time submission of CIS and VAT returns
Completion of monthly reconciliations
Effective management of cashflow, debtors, and creditors
The Senior Finance Administrator plays a key role in ensuring the smooth and accurate running of the finance function. Supporting the wider team, this role is responsible for maintaining strong financial controls, ensuring compliance with HMRC regulations (including CIS and VAT), and driving continuous improvement across finance processes. You will also support and mentor junior team members.
Key ResponsibilitiesAccounts Payable & Payment Control
Manage end-to-end supplier and subcontractor invoice processing
Ensure accurate coding, approvals, and compliance with CIS and VAT regulations
Oversee weekly and monthly payment runs
Maintain supplier accounts and resolve discrepancies
Complete monthly bank reconciliations
Construction Finance & Compliance
Prepare and submit monthly CIS returns
Ensure correct application of CIS and reverse charge VAT
Set up and maintain supplier and subcontractor records (Sage/QuickBooks)
Liaise with suppliers and subcontractors regarding payments and queries
Accounts Receivable & Credit Control
Oversee accurate sales invoicing, including retentions and CIS
Reconcile sales against project forecasts
Manage credit control processes and follow up on overdue payments
Maintain aged debtor reporting
Reporting & Compliance
Complete key monthly reconciliations (e.g. bank, vehicles, tools, intercompany)
Prepare and submit quarterly VAT returns
Maintain accurate, audit-ready financial records
Ensure strong internal controls and up-to-date documentation
Process Improvement & Team Support
Support and mentor finance team members
Assist in improving processes and systems
Develop knowledge of finance regulations and systems
Provide cover across finance and admin functions when required
Skills & Experience
3–5 years experience in a finance role (construction/CIS experience desirable)
Strong knowledge of accounts payable, receivable, and reconciliations
Experience with CIS and reverse charge VAT (or willingness to learn)
Proficient in Sage and/or QuickBooks
High attention to detail and strong numerical skills
Excellent communication and organisational skills
Ability to manage workload independently and meet deadlines
Professional, discreet, and process-driven
Qualifications
AAT Level 3 or 4 (or equivalent experience)
GCSE Maths & English (Grade C/4 or above)
Further qualifications (ACCA/CIMA) advantageous
CIS or construction finance training beneficial
Key Performance Indicators
Accurate and timely processing of invoices and payments
On-time submission of CIS and VAT returns
Completion of monthly reconciliations
Effective management of cashflow, debtors, and creditors
or call Leanne Thompson on 01844 212666
Job first posted: 24/04/2026
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