Billing Administrator

Billing administrator

Job details

Posted 15 June 2026

Salary 33000

LocationRochdale

Job type Full time permanent position

Discipline Finance & Payroll

Reference013402

About ASEL

ASEL design, develop and deliver fully bespoke integrated security solutions — seamlessly combining people, technology and process to achieve results-driven outcomes. As the original thinkers behind security risk modelling, our approach is data-led, intelligence-driven and always client-focused. We're not a standard guarding company — we're raising the bar for what modern security looks like.

Job Title

Billing Administrator

Business Area

Finance

Location

Rochdale (Head Office)

Reports To

Finance Manager

Overall Purpose

To ensure the accurate and timely billing of customers across ASEL’s Tech and TSS divisions. The Billing Administrator is responsible for producing and issuing invoices in line with contract terms and billing schedules, resolving billing queries, and maintaining the integrity of billing data within the finance system (Sage 200). The role supports healthy cash flow and accurate revenue recognition by ensuring all billable work is captured and invoiced correctly and promptly.

Main Duties and Responsibilities

• Produce and issue accurate customer invoices for the Tech and TSS divisions in line with contract terms, agreed rates and billing schedules.

• Run periodic billing cycles (weekly and monthly), ensuring all billable contracts, projects and ad-hoc charges are captured and invoiced on time.

• Reconcile billing data between operational systems and the finance ledger (Sage 200), investigating and resolving any discrepancies.

• Manage and resolve billing and invoice queries from customers and internal stakeholders promptly and professionally.

• Liaise with Operations, Sales and Project teams to confirm chargeable work, purchase orders, rates and contract details prior to invoicing.

• Process credit notes, re-bills and adjustments in line with internal authorisation procedures.

• Maintain accurate customer billing records, including contract data, rates, purchase order and reference information.

• Monitor unbilled work and aged work-in-progress (WIP), escalating issues that may delay invoicing or impact cash flow.

• Support the month-end close process, including accruals, deferred income and billing-related reporting as required.

• Produce regular billing reports and management information for the finance team.

• Ensure compliance with VAT requirements, financial controls and internal authorisation procedures at all times.

Working Relationships

• Reports to the Finance Manager.

• Works closely with the Credit Control, Accounts and wider Finance team.

• Liaises regularly with Operations, Sales and Project teams to confirm billable work and contract detail.

• Acts as a point of contact for customers in relation to billing and invoice queries.

Knowledge, Skills and Experience

Essential

• Previous experience in a billing, invoicing or finance administration role.

• Strong numeracy and a high level of accuracy with excellent attention to detail.

• Experience using a finance or accounting system (Sage 200 or similar).

• Confident user of Microsoft Excel (e.g. lookups, sorting, pivot tables).

• Strong organisational skills with the ability to manage deadlines and high transaction volumes.

• Clear written and verbal communication, with a professional approach to query resolution.

• A sound understanding of VAT and basic accounting principles.

Desirable

• Experience within a service-led, contract-based or field-service industry.

• Direct experience using Sage 200.

• Knowledge of billing for project-based and recurring/contract revenue.

• Revenue recognition experience.

• AAT qualification, or working towards one (or equivalent).

Equality & Diversity

ASEL values the diverse skills and experience of its employees and is committed to achieving equality of treatment for all. Our objectives are that all individuals shall have equal opportunities for employment and advancement based on their skills, aptitudes, and abilities. ASEL is committed to the engagement and retention of the best possible talent and to creating an environment that encourages excellence through good equalities and diversity leadership and management.

Additional Information

All employees are required to act professionally, co-operatively and flexibly in line with the requirements of the position. This job description is not exhaustive and may be reviewed and amended in line with the needs of the business.

Benefits

• Access XD- rewards and discount platform
• Apprenticeship
• Employee of the month scheme £50
• 110% Club of outstanding performers who can receive large prizes and monetary rewards
• WageStream - a flexible wage application whereby you can pull your wages out sooner than payday
• EAP - Employee Assistance Programme
• Progression opportunities within the company
• Ongoing training

Apply Today

If you are an organised finance professional with experience in Billing Administrator and are looking to join a growing organisation, we would welcome your application.

Apply now to join the Finance team at Argenbright Security Europe Limited.

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