Head of Finance

Head of Finance (AI-Native) | Tier 1 VC-Backed B2B Marketplace Start-up | Remote (UK Timezone). The Client: Harmonic is proud to announce we have been retained to work with a B2B enterprise-grade marketplace transforming a large, fragmented legacy sector. Backed by Tier 1 VCs, having just raised a large Series A, the business has built strong commercial traction by replacing a slow, fragmented status quo with a modern, AI-native platform. Their distribution network already reaches a significant base of enterprise clients, and the commercial momentum is real. The business is now gearing up for a large Series B. The founding team has rare domain credibility and an established network in their sector; this is a company at an inflection point where commercial momentum is running ahead of financial infrastructure, and this hire is the answer to that. The Role: This is a first finance hire, reporting directly to the CEO. You will take ownership of existing outsourced US accounting, a financial modelling capability currently managed by an interim RevOps lead, and a UK transfer pricing arrangement, then build a scalable, AI-enabled finance function from the ground up. The initial split is roughly 50% FinOps (monthly close, payments, reconciliations, controls), 30% FP&A (financial modelling, GMV analytics, projections, spend ROI), and 20% systems and controls as insourcing begins. You will also lead Series B preparation end-to-end: the investor-grade reporting, data room, and financial narrative. This role is hands-on now and grows in strategic weight quickly. You will be the CEO's strategic financial partner.