Interim Senior Finance Business Partner

Senior Finance Business Partner - London (3 days per week) - 12-Month Fixed Term Contract

A specialist manufacturer is seeking an experienced Senior Finance Business Partner to join their finance team on a 12-month fixed-term contract. This is a high-impact role supporting a technically complex manufacturing operation, offering the opportunity to influence decision-making, strengthen financial controls, and drive meaningful commercial insight.

This position is ideally suited to a finance professional who understands the realities of complex manufacturing environments and how these are effectively managed, controlled, and accounted for within an ERP system.

The position will also plan and manage the preparation of external filings, including the overseas manufacturing entity's statutory accounts, VAT filings, corporation tax and R&D tax credit.

The Role

You will act as the key finance partner to manufacturing and operational stakeholders, providing robust financial leadership and insight across the business. The role combines strategic business partnering with hands-on financial control, accounting, and system optimisation.

Key Responsibilities

Business Partnering & Commercial Insight

• Partner closely with operational and technical teams within a complex manufacturing setting
• Provide clear financial analysis, challenge, and insight to support decision-making
• Identify risks and opportunities to improve performance and efficiency
• Support budgeting, forecasting, and long-range planning processes

Manufacturing Finance & Cost Control

• Develop a deep understanding of manufacturing cost drivers and operational processes
• Drive cost discipline and value optimisation across the production environment
• Ensure accurate cost allocation and financial visibility across manufacturing activities

Financial Reporting & Controls

• Deliver high-quality variance analysis with actionable insights
• Support month-end reporting, statutory requirements, and financial filings
• Strengthen financial processes, controls, and data integrity

ERP & Systems Management

• Work within an ERP system to manage and account for complex manufacturing operations
• Ensure accurate and consistent financial data capture across the system
• Partner with finance and operations teams to enhance system usage, reporting, and data flows

Leadership

• Provide guidance and support to junior finance team members
• Foster collaboration across cross-functional and geographically dispersed teams

About You

• Qualified accountant (ACA / ACCA / CIMA or equivalent)
• Proven experience in a complex manufacturing environment
• Strong understanding of how manufacturing operations are reflected and controlled within an ERP system (NetSuite experience beneficial)
• Experience in financial planning, analysis, and reporting
• Confident stakeholder manager with the ability to challenge and influence
• Strong commercial awareness and a proactive, solutions-driven mindset