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Senior Full-Stack Engineer, AI FinTech

Ioassociates — United Kingdom · Posted ~5 hours ago

Senior £150K + equity

Skills

Full-stack development React Native Software architecture Financial data Account aggregation Open banking integrations AI development AI Open Banking

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Summary ✨ AI‑Generated

An early-stage senior engineering role for a hands-on builder who will work across the full stack and help shape foundational architecture and product decisions. The role combines mobile development, financial-data integrations, open banking, and AI to create trusted tools that turn financial information into actionable guidance.

Highlights

A high-impact early engineering opportunity with significant ownership, direct collaboration with founders, equity participation, and the chance to shape architecture and product direction from an early stage.

Description

Senior Full Stack Engineer | AI / FinTech | £150k + Equity Most personal finance products are very good at telling you where your money went. What if one could tell you what to do next? I'm working with an early-stage AI FinTech that has recently closed its pre-seed round and is building an AI-powered financial co-pilot. They're now looking for one of their first senior engineering hires. This isn't a role where you'll inherit a mature platform, a backlog and six layers of approval. You'll be Engineer #1/#2, working directly with the founders to turn an early product into something people genuinely trust with their financial decisions. You'll be responsible for things like: - Building across the full stack, including React Native on the frontend - Making early architectural and technology decisions - Working with financial data, account aggregation and open banking integrations - Building the AI layer that turns financial information into useful actions - Helping shape the product, rather than simply being handed tickets - Setting technical standards that future engineering hires will build on They're deliberately keeping the technical requirements broad. What matters more is that you're a very strong full-stack engineer who has built products in demanding environments and is comfortable operating with ambiguity. Experience within a recognised technology company, high-growth startup or FinTech would be particularly interesting. Exposure to AI/LLMs, financial data or open banking would be a bonus. You'll need the appetite for early-stage life too. There's no legacy codebase holding you back, but equally, there's nowhere to hide when something needs figuring out. £150k + meaningful equity Remote, but London-based Pre-seed, recently funded Engineer #1/#2 If you're a senior engineer who likes the idea of getting in early enough to genuinely influence what gets built and how it gets built, drop me a message. Equally, if someone immediately came to mind while reading this, I'd appreciate an introduction.