Senior React Developer - Front Office, Real-Time Visualisation sought by leading investment bank based in Canary Wharf.
**Inside IR35 - 3 days a week on site**
We are seeking an experienced React Developer to join our front office development team. The ideal candidate will have extensive experience building high-performance, real-time user interfaces with exceptional attention to detail and a focus on low-latency rendering. This role requires a deep understanding of modern React architecture, structured coding principles, and UI/UX best practices.
Key Responsibilities
* Design and implement complex, real-time dashboards and interactive UIs for mission-critical financial applications
* Optimize front-end performance to achieve microsecond-level responsiveness in data visualization components
* Develop reusable component libraries that maintain consistency across applications
* Implement robust error handling and resilience patterns for real-time data streams
* Participate in code reviews and mentor junior developers on best practices
* Work closely with back-end teams to integrate with real-time data services
Required Skills & Qualifications
* 5+ years of professional experience with React.js and modern JavaScript (ES6+)
* Proven experience building low-latency, real-time user interfaces (trading platforms, analytics dashboards, etc.)
* Deep understanding of React performance optimization techniques (virtualization, memoization, code splitting)
* Experience with state management solutions (Redux, MobX, Recoil, or similar)
* Proficiency with WebSockets or other real-time data protocols
* Strong knowledge of responsive design and cross-browser compatibility
* Experience with testing frameworks (Jest, React Testing Library, Cypress)
* Excellent understanding of clean code principles and component architecture
* Strong system design skills with experience creating scalable front-end architectures
Preferred Qualifications
* Experience with TypeScript and strong typing methodologies
* Knowledge of financial domain concepts (for trading/banking applications)
* Experience with data visualization libraries (D3.js, HighCharts, etc.)
* Familiarity with micro-frontend architecture
* Experience with GraphQL and/or REST API design
* CI/CD pipeline experience and deployment automation
* Experience with performance monitoring tools
Education
* Bachelor's degree in Computer Science, Software Engineering, or related field (or equivalent professional experience)
Please apply within for further details or call on 07393149627
Alex Reeder
Harvey Nash Finance & Banking
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