Front-End Engineer (React)

Paying up to £800 per day (inside IR35 via an approved umbrella) you will work out of their City of London offices 3 days a week and 2 days from home.

You will work closely with backend engineers, UX designers and security stakeholders while taking ownership of the front-end architecture, implementation and delivery quality., * Build a React & TypeScript application from greenfield to production

• Develop data-heavy interfaces including dashboards, tables, filtering and workflows
• Implement robust state management and API integration
• Optimise performance for large datasets and interactive UIs
• Collaborate with backend teams on API contracts and integration
• Maintain high standards for testing, code quality and security
• Contribute to build tooling, CI/CD and deployment processes

• Strong commercial experience with React and TypeScript
• Experience delivering complex UI applications (dashboards, data grids, workflows)
• Strong understanding of client vs server state management
• Experience with modern data fetching tools (e.g. TanStack Query)
• Experience optimising performance for data-heavy applications
• Strong testing and code quality practices
• Security-aware development approach