McGregor BoyallLondon, United Kingdom

Senior Front-End Engineer

Description

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 Back End 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 Back End 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 (eg 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 !

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

Skills

SecurityCI/CDTypeScriptAPIReact