Frontend Developer (React) - Payments / FinTech

We’re recruiting on behalf of a fast-growing European FinTech providing payments rails and crypto purchase/sale services. UX is central to the business — this team is looking for a senior frontend engineer who is obsessed with performance and shipping polished user experiences (down to the millisecond).

What you’ll do

• Build and maintain high-performance React apps using TypeScript and Vite
• Implement complex UI flows with excellent UX and accessibility
• Review PRs, enforce standards, and mentor other developers
• Optimise rendering, bundle size, and API usage (shaving milliseconds matters)
• Work closely with designers to ensure pixel-perfect implementation
• Contribute to front-end architecture and component/design systems

Requirements

• 5+ ye...