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React.js Frontend Engineer

United Kingdom, London · Job Posted January 10, 2026
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Job Description

We’re currently working with a technology-focused trading organisation building real-time, data-intensive platforms used by internal users to make fast, high-impact decisions. You’ll design, build and maintain high-performance React applications that handle large volumes of live data, working closely with product and engineering teams to deliver scalable, low-latency user interfaces.

Job Responsibility

  • Building and enhancing real-time, data-heavy user interfaces
  • Designing scalable front-end systems using React and TypeScript
  • Collaborating with engineers and domain specialists to deliver business-critical features
  • Owning frontend performance, stability and maintainability

Requirements

  • Strong experience with React and TypeScript in production environments
  • Background in real-time, event-driven or data-intensive systems
  • Solid understanding of frontend performance and state management
  • Comfortable working in fast-moving, outcome-focused teams

Nice to have

Exposure to trading systems

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