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# UI Developer

- **Company:** McGregor Boyall Associates Ltd.
- **Location:** London, UK
- **Experience:** Expert
- **Salary:** £182,000.0 - £208,000.0
- **Contract:** Temporary contract
- **Skills:** Java (Programming Language), Design of User Interfaces, TypeScript, WebSocket, RxJS, ReactJS, Backend, Webpack, Playwright, Real Time Data, Front End Software Development, React Redux, JestJS
- **Published:** August 26, 2026
- **Apply:** https://www.careerboard.com/pt/en/find-jobs-in-United-Kingdom/-9F23B589176379DA80/

## About the Role

* 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.

## Description

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

 * 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 Back End services and Real Time data streams.
 * Drive performance, scalability and modernisation of the UI platform.


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