Billing Specialist

Ambition; City Of London; On-site; GBP 32,000 - 46,000; Full time

Job summary

Ambition is partnering with a leading law firm in London to recruit a Billing Specialist. You will report to the Working Capital Manager and work with a large billing team to manage invoicing, WIP reviews, and client queries.

We seek at least 2 years in accounting or billing within professional services, with strong attention to detail, solid VAT knowledge, and excellent communication. The role is on-site in London, offering exposure to high-profile clients and a collaborative team environment.

Qualifications

• At least 2 years' experience in an accounting or billing role in a professional services or legal environment.
• Strong attention to detail and accuracy when handling client data, calculations and invoice amendments.
• Analytical mindset with experience running billing reports and interpreting data.
• Experience addressing billing and VAT queries confidently and efficiently.

Responsibilities

• Proactively calculating proposed billing amounts, managing edits and write-offs for Partner approval and drafting invoice sign-off before submission to clients and Partners.
• Handling complex bill reconciliations and calculations, including supplier bills, split bills, discounts and disbursement allocation.
• Managing advance bills end-to-end and acting as the primary contact for billing enquiries, client queries and credit notes.
• Collaborating with Legal Admin teams to provide support to Partners and clients, maintaining up-to-date client protocols and billing instructions.
• Facilitating WIP reviews, draft bill ageing, and bill review sessions with Partners; processing WIP write-offs as irrecoverable.
• Ensuring WIP is billed per client protocols and producing ad-hoc reports to identify lock-up issues and reduce WIP days.
• Deputising for Team Leader and advising Billing Coordinators on escalations and complex matters.
• Supporting VAT and Solicitors' Accounts Rules queries, with advanced knowledge of VAT and local regulations (training available).
• Reviewing matter set-up reports and validating details against quality standards; consulting to capture missing matter information.
• Ensuring compliance with billing policies and firm standards; collaborating with collections on ad-hoc credit activities.

Skills

Attention to detail

Analytical mindset

VAT knowledge

Billing accuracy

Communication skills

Team collaboration

Tools

Billing software

Excel

Job description

Ambition is partnered with an exceptional law firm in their search for a Billing Specialist to join their London office. Reporting to the Working Capital Manager and working alongside a large billing team, this is an excellent opportunity for someone looking for their next move in legal billing.

• Proactively calculating proposed billing amounts, managing necessary edits and write-offs for Partner approval, and drafting and facilitating invoice sign-off before submission to clients and Partners
• Handling complex bill reconciliations and calculations, including supplier bills, split bills, discounts, and disbursement allocation
• Managing advance bills end-to‑end and acting as the primary point of contact for billing‑related enquiries, client queries, and credit notes, escalating complex matters to Partners where appropriate
• Collaborating with Legal Administration teams to provide cohesive support to Partners and their clients, and maintaining up‑to‑date client protocols and billing instructions to support colleagues and ensure continuity
• Facilitating WIP reviews, draft bill ageing, and bill review sessions with Partners, and processing WIP write‑offs where irrecoverable in line with the agreed approval matrix
• Ensuring WIP is recorded and billed in line with client protocols, and producing ad‑hoc reports and analysis on specific clients to identify lock‑up issues and support Partners in reducing WIP days
• Deputising for the Team Leader when needed, and providing expertise to Billing Coordinators on escalations and complex billing matters while supporting their ongoing development
• Supporting colleagues with VAT and Solicitors' Accounts Rules queries, with an expectation to hold a more advanced working knowledge of VAT and local regulations (training available where needed)
• Reviewing matter set‑up reports and validating details against defined quality standards, and consulting with Legal Administration and Partners to capture any missing matter information
• Ensuring compliance with billing policies and firm standards, and collaborating with the collections team on credit collection activities on an ad‑hoc basis

You will need to have

• At least 2 years' experience in an accounting or billing role, ideally within a professional services or legal environment
• Strong attention to detail and accuracy when handling client data, calculations, and invoice amendments
• An analytical mindset with experience running billing reports, interpreting data, and taking appropriate action
• Solid problem-solving skills, with experience addressing billing and VAT queries confidently and efficiently
• Working knowledge of VAT standards and guidelines (training will be provided where needed)
• Excellent communication skills and a collaborative approach, with experience working across multiple teams and departments
• A demonstrable ability to prioritise tasks, manage competing deadlines, and handle multiple responsibilities simultaneously
• A commitment to upholding firm guidelines and standards, even when faced with internal or external pressure