React Developer
🔒 Confidential Employer
Posted 24 April 2026
LOCATION
London
TYPE
Full-time
LEVEL
Mid-Senior level
SALARY
£180,000 / year
CATEGORY
Technology
This employer holds a UK Home Office sponsor license — sponsorship for this specific role is at the employer’s discretion
SKILLS
React
JavaScript
TypeScript
Frontend architecture
UI performance
Data-driven web applications
FULL DESCRIPTION
Role:React Developer – Data team (Junior, mid-level and senior positions)
Client: [Employer hidden — view at passion-project.co.uk]
Compensation:Up to £180,000 Base + Bonus
Location: London (Hybrid)
Key responsibilities include:
- Designing and developing advanced React-based web applications for data exploration, analytics, and monitoring
- Building rich, interactive user interfaces capable of handling large, real-time datasets
- Collaborating closely with data engineers, quantitative researchers, and traders to deliver intuitive, high-impact tooling
- Optimising frontend performance, responsiveness, and scalability
- Contributing to UI architecture, component libraries, and frontend engineering best practices
Requirements
- Strong commercial experience as a React Developer or Frontend Software Engineer
- Proven experience building complex, data-driven web applications
- Solid understanding of modern JavaScript/TypeScript, React, and frontend architecture
- Experience optimising UI performance for large datasets or real-time applications is beneficial
- Familiarity with modern development practices (version control, testing, CI/CD)
- Excellent communication skills and ability to work closely with technical stakeholders
- Background in financial systems or data platforms is beneficial but not essential
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