Interim Financial Modeller job at London Full Time

Interim Financial Modeller | International Consumer Brand | London

Harmonic are delighted to be partnering with a globally recognised, internationally expanding consumer brand on the search for an Interim Financial Modeller to lead a full redesign of the group’s financial reporting suite.

This is a genuinely hands-on modelling and reporting role at a business undergoing a significant finance transformation. The organisation has built an exceptional reputation within the consumer space and is now investing heavily in rebuilding its FP&A infrastructure to support continued global growth.

This role will suit a commercially minded finance professional with strong Excel modelling skills who can come in, take ownership of a reporting rebuild from scratch, and deliver a clean, practical and scalable suite of outputs that a senior finance team can work with confidently day to day.

The Role

Reporting into the Global FP&A Director, this role sits at the heart of the finance transformation programme and has a clear and defined remit: rebuild the group’s entire management reporting suite. The current reporting environment is Excel-driven and in need of a complete overhaul. You will start with a blank canvas and design and deliver a full suite of reporting across actuals, forecasts, budgets, balance sheets, cash flows and variance analysis.

Critically, this is not a role for overcomplicated models or macro-heavy solutions. The business needs clean, intuitive, well-structured outputs that a proficient but non-technical finance team can maintain and use with confidence. The ability to translate complex financial data into clear, usable reporting is just as important as technical capability.

Key Responsibilities

• Lead the end-to-end redesign of the group’s FP&A reporting suite, building from scratch across actuals, forecast, budget, balance sheet and cash flow reporting
• Partner with FP&A and Financial Control teams to define reporting requirements and ensure outputs support both regional and consolidated group reporting needs
• Design clear, well-structured Excel-based models and reporting templates that are intuitive for a senior finance audience without reliance on macros or complex formulas
• Support the migration of legacy consolidation and reporting models into the new ERP environment, ensuring alignment between system outputs and FP&A requirements
• Build out variance analysis capabilities and reporting packs to support executive decision-making and business performance management
• Lead data validation and reconciliation activity across old and new reporting environments, ensuring accuracy and integrity of all outputs
• Support UAT and post go-live optimisation across the reporting workstreams
• Document reporting processes, data definitions and governance to support long-term usability and knowledge transfer

What We Need to See (Essential)

• Qualified accountant (ACA, ACCA, CIMA or equivalent) or strong experience in lieu
• Exceptional Excel skills, with proven ability to build financial models and reporting suites from scratch
• Strong commercial finance background with a solid grasp of P&L, balance sheet, cash flow and variance analysis
• Experience redesigning or rebuilding management reporting in a multi-entity or international finance environment
• Strong stakeholder management skills with the ability to gather requirements and translate them into practical reporting solutions

What Would Be Advantageous

• Experience with Power BI or ERP-based reporting environments
• Background in a consumer, product-led or multi-channel retail business
• Exposure to finance transformation or ERP implementation programmes

Day Rate: £450 – £550 per day (outside IR35) Contract Length: 6 months plus
Location: London
Start Date: ASAP

At Harmonic, we are dedicated to fostering an inclusive and equitable workplace. We actively welcome applications from individuals of all backgrounds and assure you that every candidate will be thoughtfully considered for the roles we represent, without regard to race, religion, gender expression, disability, or sexual orientation.