Finance Systems Manager (Jersey/Guernsey/UK)

Overview

Finance Systems Manager (Jersey/Guernsey/UK)

Application Deadline: 31 October 2025

Department: Finance

Employment Type: Permanent - Full Time

Location: Jersey/Guernsey/London

Reporting To: Head of Finance

Description

Purpose of the job

The Finance Systems Manager will be responsible for managing, maintaining and enhancing the firm's financial systems. The firm's practice management system is Aderant. This role will play a critical part in ensuring that Finance systems operate effectively, support finance operations and improve user experience through system development, configuration and training.

The role holder will lead system upgrade projects, working collaboratively with the IT department to implement technical fixes, and provide expert guidance to users, ensuring that the firm maximises the value of its finance systems.

An upgrade of the core Aderant system is scheduled for the beginning of 2026, transitioning the hosting of the system from on premises to the Aderant AWS cloud offering, Sierra. The Finance System Manager will be responsible for delivering this upgrade and for future roll outs of additional functionality and upgrades.

Key Responsibilities

Finance Systems Management & Support

• Act as the primary point of contact for all Aderant-related and finance system queries and issues
• Maintain system integrity, ensuring data accuracy, security and compliance with regulatory requirements
• Manage Aderant user security, access and administration and ensure sufficient system controls exist to comply with local regulations and AML requirements
• Troubleshoot and resolve technical issues, liaising with IT and external vendors as required
• Engage with supplier client experience and online communities to identify best practice and issues facing users and suggested resolutions
• Monitor system performance, identifying and addressing inefficiencies

Upgrade & Implementation Projects

• Management of system upgrade processes and for assessing new Aderant product offerings, including the configuration and the resolution of post go-live issues
• Plan and execute Aderant upgrades, ensuring minimal disruption to business operations
• Test new system functionality, ensuring stability and compatibility before deployment
• Manage data migrations, integrations, and system rollouts as part of upgrade projects
• Work with stakeholders to define project requirements and ensure successful delivery

User Training & Support

• Develop and deliver training sessions for finance and non-finance users to improve system proficiency
• Create user guides, documentation, and best practice procedures for Aderant usage
• Provide ongoing support and guidance to users, ensuring they can effectively utilise system features

Reporting & Data Management

• Support finance teams with reporting and data extraction from Aderant
• Ensure financial data is structured and accessible for business intelligence and decision-making
• Assist with system-driven compliance reporting and audit requirements.

Qualifications

• Accountancy or bookkeeping qualification or experience desired
• At least 5 years' experience in a similar role, ideally in a professional services firm

Knowledge/skills/experience

• Proven experience managing and supporting Aderant within a law firm or professional services environment
• Strong technical expertise in system configuration, upgrades, and troubleshooting
• Strong analytical and problem-solving skills, with a keen eye for detail
• Ability to manage projects, work to deadlines, prioritise effectively and coordinate with multiple stakeholders
• Excellent communication skills, with the ability to train and support non-technical users
• Strong knowledge and experience with SQL, Excel and reporting tools (such as SSRS Report Builder and Power BI)
• Knowledge of legal finance operations and regulatory requirements
• Familiarity with system integrations and automation solutions

Competencies

• Be responsible, disciplined, and have a methodical approach to tasks
• Demonstrate an exceptional eye for detail
• Have strong verbal and written communication skills
• Show initiative and common sense
• Have the ability to manage time effectively and prioritise and organise tasks
• An enthusiastic and flexible attitude and approach

In this role you will be expected to:

• Behave in a manner in keeping with our core culture and values.
• Adhere to all policies, procedures and regulations including those around anti-money laundering and terrorist financing.
• Commit to fulfilling any personal CPD requirements and continually developing your skills and knowledge.