Senior Front-End Engineer

Senior Front-End Engineer (React) - Contract

We are looking for a Senior Front-End Engineer to lead the development of a greenfield React & TypeScript analytics platform. This role involves building a secure, high-performance web portal used for complex dashboards and data-driven workflows.

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.

Key Responsibilities

• 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

Required Experience

• 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

This is an excellent opportunity to work on a greenfield, data-intensive platform within a collaborative and high-performing engineering environment. If you think you have the required skills and experience, please apply now!

McGregor Boyall is an equal opportunity employer and do not discriminate on any grounds.