Interim FP&A Modelling Lead

Interim FP&A Modelling Lead – Operational Cost Planning
Pay: £600-700 per day
Hybrid Working
Based East Midlands

I’m currently seeking an experienced Interim FP&A expert to lead the development of a sophisticated operational expenditure and variable cost forecasting model within the finance function of a high growth, commercially astute business.

This is a commercially critical project focused on improving visibility, scalability and forecasting accuracy across a complex and evolving cost base. Working closely with senior finance leadership and operational stakeholders, you will design and implement a dynamic financial model that enables improved decision-making, scenario analysis and investment planning.

The Opportunity

The business has significantly enhanced its revenue forecasting capabilities and is now investing in a more mature, data-driven approach to operational cost planning. The successful consultant will play a key role in building a scalable variable cost model that links operational drivers, customer activity and transaction volumes to forecasted expenditure.

You will work cross-functionally with Finance, Technology, Operations, Engineering, Marketing and Customer teams to identify, map and model cost drivers across the organisation.

Key Responsibilities

• Build a detailed and scalable variable cost forecasting model in Excel
• Integrate the model into an existing FP&A and reporting environment
• Develop forecasting logic linked to operational and customer activity metrics
• Identify fixed vs variable cost drivers across multiple cost categories
• Create scenario modelling and “what-if” analysis capabilities
• Produce commercially meaningful outputs including cost-per-customer and cost-per-transaction analysis
• Collaborate with senior stakeholders to validate assumptions and refine model outputs
• Deliver clear documentation and handover to the FP&A team

About You

We are looking for a commercially minded FP&A professional with strong modelling capability, experience working within fast-paced, data-led businesses and who has worked on similar projects.

You will bring:

• Proven experience building complex operational and/or variable cost models
• Advanced Excel and financial modelling expertise
• Experience partnering with operational and technology stakeholders
• Strong understanding of FP&A, forecasting and business planning processes
• Ability to translate complex financial data into clear commercial insight
• Experience working in high-growth, e-commerce or technology-led environments
• Prior experience dealing with senior stakeholders and excellent communication skills

Contract Details

• Initial c2mnth project role
• Hybrid working arrangement
• Immediate or short-notice availability required

If you are an experienced interim and FP&A expert who enjoys solving complex commercial and operational modelling challenges, we’d love to hear from you.