UI Developer in London - McGregor Boyall

We are recruiting for a Senior UI Developer to join a major financial services technology programme, working on a high-performance Single Dealer Platform supporting electronic trading.

Based out of their City of London offices you will join on an initial 12 month contract.

• Lead UI development and front-end architecture.
• Build scalable, low-latency trading interfaces using React and RxJS.
• Work closely with Product, UX and Backend teams.
• Provide technical leadership and mentoring to UI engineers.
• Integrate with Java backend services and real-time data streams.
• Drive performance, scalability and modernisation of the UI platform.

• Strong React, TypeScript and RxJS experience.
• Experience with Redux/Context API, WebSockets and Vite.
• Knowledge of micro-frontends and modular architecture.
• Experience with Vitest, Playwright, Storybook or similar.
• OpenFin experience is advantageous.
• Financial markets experience, particularly FX, Fixed Income or Electronic Trading, is highly desirable.
• Strong communication, leadership and problem-solving skills.

If you're an experienced UI Developer with a strong React/RxJS background and experience in high-performance environments, we'd be keen to hear from you.