Fractional Chief Financial Officer

RiderTax is an early-stage UK tax-tech startup focused on simplifying tax, expenses and financial administration for self-employed delivery riders. The longer-term vision is to build broader financial infrastructure for underserved gig-economy workers operating on subscription and platform-licensing models.

The fractional CFO will work directly alongside the founders to establish sound financial foundations ahead of scale. Key areas include pre-seed and seed fundraising readiness, financial narrative development, SEIS/EIS considerations, unit economics design, and due diligence preparation. This is a hands-on, founder-facing engagement suited to someone who enjoys shaping strategy at the earliest stages.

• Build and maintain financial models, forecasts and cash-flow plans
• Develop fundraising strategy and prepare investor-ready materials for pre-seed and seed rounds
• Define unit economics, including CAC, LTV and pricing frameworks
• Lead budgeting and scenario planning across the business
• Advise on SEIS/EIS eligibility and related fundraising considerations
• Prepare due diligence documentation and build scalable financial infrastructure

• CFO or Finance Director experience with UK startups or scaleups
• Strong background in fintech, SaaS or technology businesses
• Demonstrated experience supporting pre-seed or seed fundraising rounds
• Hands-on financial modelling capability with attention to detail
• Working knowledge of UK early-stage investment frameworks, including SEIS and EIS
• Comfort working directly with founders and early investors in a fractional capacity

RiderTax is a UK tax-tech startup building tools to help self-employed delivery riders manage their tax obligations, expenses and financial admin. The company operates on a subscription-led model and has broader ambitions to serve the wider underserved self-employed workforce through financial infrastructure and platform partnerships.