Legal eBilling Specialist (6 Month FTC)

Mishcon de Reya; City of Westminster; On-site; GBP 45,000 - 60,000; Full time

Job summary

A leading professional services firm in the UK is seeking an eBilling Specialist to support the Billing team with a new eBilling system. This role encompasses troubleshooting, quality assurance, and technical support, focusing on guiding the team to achieve independence in managing their eBilling tasks. The ideal candidate will have 3-5+ years of eBilling experience, proficiency in BillBlast and Aderant, and strong problem-solving skills. The firm promotes a diverse and inclusive workplace and encourages flexible working arrangements.

Benefits

Flexible working

Agile work culture

Inclusive workplace

Qualifications

• 3-5+ years law-firm eBilling experience.
• Proficiency with BillBlast and good working knowledge of Aderant.
• Strong understanding of VAT and LEDES file handling.

Responsibilities

• Support and guide Billing team in navigating eBilling platform.
• Troubleshoot issues related to eBilling queries.
• Analyse error trends and propose workflow improvements.

Skills

Problem-solving skills

Excellent communication

Strong organisational skills

Familiarity with VAT

Experience with SQL/reporting tools

Tools

BillBlast

Aderant

Serengeti

Tymetrix

Collaborati

Job description

Role Overview

We have recently rolled out a new eBilling system (BillBlast). We are now seeking an eBilling Specialist who can support our Billing team in navigating the new platform confidently. The primary focus of this role is to support, guide, and troubleshoot for the Billing team, rather than performing day-to-day billing themselves. This role is not a traditional eBillers role-it is a hybrid operational, technical, and quality‑assurance position to drive knowledge transfer and ensure the Billing team can manage their eBilling workload independently and accurately. Besides upskilling the team to be able to complete eBilling tasks independently, a core responsibility of this role is to assess competency levels, report any gaps in readiness, and clearly articulate the reasons behind those gaps. The eBilling Specialist must also maintain clear documentation, troubleshooting notes, and guidance, and be able to educate and coach eBillers on client‑specific best practice, as well as independently troubleshooting and resolving any rejections.

Support, Troubleshooting & Oversight

• Act as the first line of support for eBilling queries related to BillBlast, Aderant, and client eBilling portals.
• Troubleshoot issues such as failed uploads, credential errors, format mismatches, portal‑specific rules, and data discrepancies.
• Assess and report on eBillers’ readiness to perform tasks independently, clearly articulate where and why they are struggling.
• Track recurring issues and communicate clear feedback to leadership on training needs and process gaps.
• Maintain detailed troubleshooting notes, documentation, and knowledge articles to support consistent and repeatable resolution of issues.
• Provide hands‑on coaching and education to eBillers, ensuring they understand root causes and how to resolve issues themselves moving forward.

eBilling Support & Quality Assurance

• Assist with verifying invoice readiness for eBilling, ensuring attachments, metadata, and format requirements align with client expectations.
• Support eBillers in resolving rejections, exception codes, and client‑specific compliance requirements.
• Monitor eBilling progress, unresolved queries, and outstanding tasks, report regularly to supervisors and stakeholders.

System Support & Configuration Awareness

• Collaborate with Finance Systems, Aderant teams, and vendors to validate configurations, integration behaviour, and fixes.
• Escalate technical issues appropriately and ensure issues are tracked through testing to final resolution.
• Maintain and update process guides for common error types, portal rules, and configuration behaviours.

Legal Operations & Compliance Support

• Apply and advise on Outside Counsel Guidelines (OCGs), client Standard Operating Procedures (SOPs), and complex billing requirements.
• Support compliance with firm policies, data standards, documentation rules, and month‑end controls (WIP, prebills, write‑offs, credits).
• Support eBillers in understanding LEDES formatting, billing compliance, VAT rules, and audit trail requirements.

Stakeholder Collaboration & Training

• Work closely with Billing, Credit Control, Legal Operations, and fee earners, communicating status, blockers, and required actions clearly.
• Contribute to and maintain training materials, quick‑reference guides, and knowledge‑base entries.
• Coach eBillers on portal rules, quality checks, workflows, and best practices.
• Coach eBillers to communicate effectively with Legal Operations and fee earners if their inputs are required, and educate Legal Operations on the roles and tasks they need to perform to ensure swift resolution of issues and smooth eBilling.

Continuous Improvement & Reporting

• Analyse error trends, rejection drivers, and cycle‑time issues; propose workflow improvements accordingly.
• Support automation and efficiency initiatives, including reducing noise (email triggers, avoidable escalations) and enhancing service‑desk processes.
• Regularly update leads/supervisors on systemic issues, skill gaps within the eBilling team, or process defects requiring intervention.

Key Qualifications

• 3‑5+ years law‑firm eBilling experience with strong problem‑solving skills.
• Proficiency with BillBlast and good working knowledge of Aderant.
• Practical experience with major eBilling platforms (Serengeti, Tymetrix, Collaborati, etc.).
• Strong understanding of VAT, billing compliance, and LEDES file handling.
• Excellent communicator—patient, structured, and able to explain technical issues to non‑technical users.
• Strong organisational skills with the ability to manage multiple queries and work calmly under pressure.
• Awareness of AML requirements impacting billing.
• Experience with SQL/reporting tools is advantageous.

Desired

• Experience maintaining client‑specific SOPs and embedding OCGs into workflows.
• Exposure to Legal Operations practices, including matter lifecycle, data standards, and reporting.
• Background in Continuous Improvement or process optimisation.

About the Company

The Mishcon de Reya Group is an independent, international professional services business with law at its heart, employing over 1400 people with over 650 lawyers. It includes the law firm Mishcon de Reya LLP and a collection of leading consultancy businesses that complement the firm's legal services. Mishcon de Reya LLP is based in London, Oxford, Cambridge, Singapore, Hong Kong and UAE. The firm services an international community of clients and provides advice in situations where the constraints of geography often do not apply. The work the firm undertakes is cross‑border, multi‑jurisdictional and complex, centred around three increasingly entwined and connected sectors: the Innovation Economy, Private Wealth and Capital, and Real Estate. The firm is known as a disputes powerhouse with a formidable capacity firm‑wide for dispute resolution. The Mishcon de Reya Group includes consultancy businesses MDR Discover, MDR Mayfair (in London, Singapore and Dubai), MDR ONE, and MDRi (in Hong Kong). The Group also includes MDR Lab, which invests in the most promising early‑stage legaltech companies as well as the Mishcon Academy, its in‑house place of learning and platform for thought leadership. In 2024, the Group announced its first strategic acquisition in the alternative legal services market, flexible legal resourcing business Flex Legal. It also acquired a majority stake in Somos, a global group actions management business. We strive to create a fully diverse and inclusive workplace where all our people are empowered to fulfil their potential. We are proud of our agile working culture and are always happy to talk flexible working.