Interim Finance Systems Accountant (6 months)

Brewer Morris; City Of London; Hybrid; GBP 60,000 - 80,000; Full time

Job summary

A well-established organisation is seeking an experienced Interim Finance Systems Accountant for a 6-month hybrid role in London. The role focuses on data reconciliation and reporting for a new consolidation system. Candidates should be qualified accountants with strong analytical skills and experience in multi-currency group consolidations. Immediate availability is preferred.

Qualifications

• Qualified accountants with relevant certifications.
• Experience in multi-currency group consolidations.
• Proficient in Excel and familiar with consolidation systems.

Responsibilities

• Finalising reconciliation of historical data.
• Supporting the preparation of reporting outputs.
• Assisting in the production of annual statutory accounts.
• Liaising with external auditors during the audit process.
• Collaborating with finance teams to improve reporting accuracy.
• Contributing to wider finance projects.

Skills

Qualified accountants (ACA, ACCA, CIMA or equivalent)

Experienced in multi-currency group consolidations

Proficient in Excel

Strong analytical thinkers

Comfortable working independently

Experienced in finance-related projects

Collaborative and proactive

Tools

OneStream consolidation system

Job description

Interim Finance Systems Accountant (6 months)

London (Hybrid) – 3 days office | 2 days home

£500 p/day (Umbrella)

A well-established organisation is seeking an experienced interim Finance Systems Accountant to support its finance team during a key systems implementation project. This role will focus on data reconciliation, reporting accuracy, and statutory reporting as the business transitions to a new group consolidation system. Working within a centralised finance function, you’ll play a critical role in ensuring the integrity of financial data and supporting the successful rollout of a new reporting system.

What you’ll be doing:

• Finalising reconciliation of historical data between legacy and new consolidation systems (OneStream)
• Supporting the preparation and testing of reporting outputs for both management and statutory purposes
• Assisting in the production of annual statutory accounts and related disclosures
• Liaising with external auditors and providing ad hoc analysis during the audit process
• Collaborating with finance and reporting teams to resolve data discrepancies and improve reporting accuracy
• Contributing to wider finance projects and supporting continuous improvement initiatives

Skills & Qualifications:

• Qualified accountants (ACA, ACCA, CIMA or equivalent)
• Experienced in multi-currency group consolidations and complex structures (subsidiaries, joint ventures)
• Proficient in Excel and familiar with consolidation systems (OneStream is highly beneficial)
• Strong analytical thinkers with the ability to interpret complex financial data
• Comfortable working independently and managing multiple priorities
• Experienced in finance-related projects and systems implementations
• Collaborative, adaptable, and proactive in supporting team goals

This is an urgent role and applicant should be immediately available or available at short notice.

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