Interim FP&A Lead

OneDome is a UK property and mortgage group that has grown quickly through a series of acquisitions. The group now spans mortgage and protection broking (employed, self-employed and network models), specialist finance, wealth management and home-buying services, across around 15 UK legal entities.

Finance has largely built a new group operating forecast (monthly, entity-level plus consolidation, three-statement model). The model exists - what does not yet exist is the FP&A function around it. There is no regular reforecast cadence, no board-approved budget that the business is managed against, and actuals are not yet compared to or reported against forecast or budget.

The Interim FP&A Lead will own the operating forecast, finish its build-out, operationalise it, run the 2027 budget through it with the business, and hand over a documented, working FP&A process to a permanent hire.

The VP Finance will retain ownership of the long-range plan and all board and investor-facing work; this role is the engine room. You will work alongside and closely with the Finance Manager and broader finance team who cover accounting, financial operations and external compliance/reporting.

• Take ownership of the group operating forecast as the single source of truth for short-range, detailed planning, reconciled to actuals, and producing outputs that can feed the long-range plan.

• Prioritise and complete the outstanding build items, including working with CRM data to inform revenue drivers.

• Establish and run the monthly cycle including actuals-versus-forecast analysis, and reforecast cycle covering multiple scenarios as appropriate.

• Materially contribute to establishing, delivering and improving monthly management/board reporting.

• Help establish business owners for planning assumptions and get agreement / buy-in on assumptions and targets from those who will deliver them.

• Run review sessions with budget holders; challenge assumptions constructively and record decisions.

• Design and run the FY27 budget process end to end before the end of the year (31st December year-end). This would include planning / setting the timetable; project management; getting, reviewing and challenging input from the business; and facilitating review and approval by group management/board.

• Extensive FP&A experience including: 3 statement, multi-entity (and consolidation), multi-scenario modelling; extensive revenue forecasting; getting input from business stakeholders; forecast/budget process management; variance analysis and management reporting.

• Played a material part in establishing FP&A. You have helped take a business a meaningful distance along the journey of establishing FP&A, which might include: a working forecast cadence, a budget the business is managed against, business ownership of numbers, or role design and process improvement across FP&A. Ideally in a start-up, scale-up or acquisitive group where the starting data was imperfect, with a track record of improving processes rather than just running them.

• Ensured business ownership. You have ensured non-finance leaders own their assumptions and numbers, run budget-holder sessions, and held the line on challenge without needing the finance lead or CEO in the room.

• Modelling and data discipline. Advanced Excel and financial modelling with strong control conventions / approach. Also comfortable working with system extracts to understand, transform and use data using appropriate tools, and comfortable using AI assistants as part of a modelling and analysis workflow while aware of their failure modes.

• Concise communicator with structured approach. Clear, concise and professional in writing and in meetings, including with senior stakeholders. Documentation and handover are part of how you work, not an afterthought.

• Time to impact. Available to start in October at the latest; able to commit to six months; self-directed, fast, comfortable with ambiguity, proactive and picks things up quickly.

• Owned a complex model built by someone else. You have taken ownership of a complex financial model you did not build, understood it quickly, and improved and extended it without breaking it.

• Mortgage or protection intermediation experience (procuration fees, commission and clawback, employed, self-employed adviser and network models), or similar sector experience; experience with driver-based operating models for transaction- or funnel-driven revenue.

• System implementation: Experience choosing, implementing and/or using FP&A tooling, or defining the target state for it.

• Qualified accountant (ACA, ACCA, CIMA or equivalent).

OneDome is a UK-based housing and fintech technology platform building an AI-powered platform to simplify life’s biggest financial decisions — from buying a first home to building and protecting long-term wealth.

The platform brings together property discovery, mortgage origination, legal and transaction services, insurance, and financial planning into a single, end-to-end digital experience. OneDome’s flagship HomeBuyer Service reimagines home ownership as a retail-style product, bundling everything required to purchase a home into one transparent, fixed-price offering. Beyond home purchases, the platform supports customers across the full lifecycle of home ownership and personal finance.

OneDome operates at scale, working with a nationwide network of over 500 mortgage brokers and arranging approximately $1.4 billion in mortgage volume per month, positioning the company among the largest housing and mortgage platforms in the UK.

The company is profitable and has been recognised for rapid, capital-efficient growth, including being ranked the 4th fastest-growing fintech and 17th fastest-growing technology company by the Deloitte Fast 50 in 2025, and the 6th fastest-growing tech company by the Sunday Times Tech 100 in 2026.

Backed by Channel 4 Ventures and family offices across the UK, Saudi Arabia, the United States, and Australia, OneDome is building the next generation housing and fintech super-platform, replacing fragmented, manual processes with a modern, data-driven, AI-enabled consumer experience.