Interim finance project manager

A dynamic and growing organisation is seeking an experienced Interim Finance Project Manager to support a period of significant transformation. This interim role will lead on the implementation of Sage 200 and oversee the financial integration of a newly acquired business, ensuring that systems, processes, and reporting frameworks are aligned and fit for purpose.

You ll be working closely with senior leadership and key stakeholders across finance and operations to deliver a smooth transition, establish best practice, and embed new ways of working across the business.

Key Responsibilities

As the Finance Project Manager, you will:

• Take full ownership of the Sage 200 implementation project, ensuring successful configuration, testing, and go-live.
• Lead the integration of financial systems and processes following a recent acquisition, ensuring data integrity and operational consistency.
• Oversee data migration activities including data mapping, cleansing, reconciliation, and validation.
• Develop and deliver robust data testing plans, ensuring accuracy, completeness, and compliance with internal governance standards.
• Review and document existing (As-Is) processes, identifying gaps, inefficiencies, and risks across finance and related functions.
• Design and implement future-state (To-Be) processes to drive efficiency, control, and scalability.
• Engage and manage stakeholders across finance and non-finance areas to ensure alignment and effective communication throughout the project lifecycle.
• Coordinate training and knowledge transfer for finance and operational teams, ensuring new systems and processes are effectively adopted.
• Conduct a review of billing, income, and service-related processes, identifying opportunities to streamline workflows and improve accuracy.
• Produce regular project reporting, risk logs, and recommendations for the senior management team and project board.

About You

We re looking for someone with:

• Professional qualification (ACA, ACCA, CIMA, or equivalent) is essential.
• A proven track record of managing finance transformation or systems implementation projects, ideally in complex or multi-entity environments.
• Strong hands-on experience with Sage 200 (or similar ERP/accounting systems).
• A deep understanding of core finance processes, including general ledger, AP/AR, income management, and reporting.
• Demonstrable experience in data migration, testing, and systems integration.
• Strong stakeholder management and communication skills able to translate technical and financial information clearly for a range of audiences.
• A practical, delivery-focused mindset, capable of driving change and managing competing priorities.