Trading Systems UI Engineer - Real Time Applications - Selby Jennings

eFinancialCareersLondonreedpublished 09/24/2026
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Must-have:TypeScriptJavaScriptReactFrontend

Key Responsibilities

  • Design and develop high-performance front-end applications using React.
  • Build intuitive, real-time user interfaces used by front-office trading teams.
  • Collaborate closely with product owners, users and stakeholders to deliver new functionality.
  • Contribute to architectural decisions and drive engineering best practices.
  • Optimise application performance and user workflows across complex, data-intensive platforms.
  • Develop reusable components, shared libraries and scalable UI frameworks.
  • Participate in the full software development lifecycle, from design through to production support.

Key Requirements Strong commercial experience with React and modern JavaScript/TypeScript development.

  • Experience building complex, business-critical web applications.
  • Exposure to real-time data, streaming applications or event-driven systems.
  • Experience within financial services, capital markets or electronic trading environments.
  • Exposure to trading platforms, market data systems or analytics applications.
  • Experience with technologies such as Redux, RxJS, AG Grid, WebSockets or OpenFin.
  • Previous involvement in architectural design, mentoring or technical leadership
  • Strong understanding of front-end architecture, performance optimisation and UI design principles.
  • Experience working closely with business stakeholders and end users.
  • Strong problem-solving skills and a passion for building high-quality software