Senior Front-End Engineer

Senior Front-End Engineer

Posted 5 days ago by 1757055607

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£500 Per day
Outside
Hybrid
Derby
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Automation Continuous Integration and Continuous Delivery Front-End Engineering Front End (Software Engineering) JavaScript (Programming Language) Mobile App Mobile Devices React.js React Native Software as a Service (SaaS) Software Development TypeScript Web Performance Optimisation Web Platforms Workflows

Summary: The role of Senior Front-End Engineer focuses on developing scalable React.js applications within an Nx monorepo architecture. The position requires expertise in React.js and Nx, with responsibilities including supporting mobile apps and enhancing developer experience. This contract role is remote with occasional on-site days and has a duration of 9-12 months. The ideal candidate will join a high-performing engineering team dedicated to building a modular product platform.

Key Responsibilities:

  • Deliver and maintain a scalable Nx monorepo architecture for web.
  • Drive the React.js web platform, ensuring performance and maintainability.
  • Establish white-labelling workflows (branding, theming, config-driven setup).
  • Ensure plug-and-play feature modules can be reused across apps.
  • Improve developer experience: onboarding, codegen, CI/CD, automation.
  • Ensure analytics, monitoring, and testing practices are embedded across projects.

Key Skills:

  • Strong hands-on development experience in React.js, with ownership of large-scale web app.
  • Strong Nx monorepo experience (or similar tooling in production).
  • Proficient in TypeScript and modern JS (ES6+).
  • Proven track record of web performance optimisation.
  • Strong testing discipline (Jest, React Testing Library, MSW).
  • Experience with white-labelled SaaS platforms.
  • Knowledge/experience of internationalisation.
  • Mobile/web parity experience (React Native support).

Salary (Rate): £500/day

City: Derby

Country: undetermined

Working Arrangements: hybrid

IR35 Status: outside IR35

Seniority Level: Senior

Industry: IT

Detailed Description From Employer:

Senior Front-End Engineer - React / Nx (Contract)

Location: Remote with occasional day on site

Contract Type: 9-12 months (with potential extension)

Start Date: October 2025

Rate: up to £500/day

IR35: Outside

We're looking for a Senior Front-End Engineer with expertise in React.js and strong experience with Nx monorepos to help design, build, and scale our clients modular product platform.

This is a web-first role, focused on building performant, scalable React.js applications within an Nx monorepo architecture. You'll also support React Native mobile apps, ensuring cross-platform consistency and enabling white-labelling capabilities. You'll be joining a high-performing engineering team working on a plug-and-play platform.

Key Outcomes

  • Deliver and maintain a scalable Nx monorepo architecture for web.
  • Drive the React.js web platform, ensuring performance and maintainability.
  • Establish white-labelling workflows (branding, theming, config-driven setup).
  • Ensure plug-and-play feature modules can be reused across apps.
  • Improve developer experience: onboarding, codegen, CI/CD, automation.
  • Ensure analytics, monitoring, and testing practices are embedded across projects.

Skills & Experience

Essential:

  • Strong hands-on development experience in React.js, with ownership of large-scale web app
  • Strong Nx monorepo experience (or similar tooling in production).
  • Proficient in TypeScript and modern JS (ES6+).
  • Proven track record of web performance optimisation.
  • Strong testing discipline (Jest, React Testing Library, MSW).

Desirable:

  • Experience with white-labelled SaaS platforms.
  • Knowledge/experience of internationalisation.
  • Mobile/web parity experience (React Native support).

Apply now or reach out to Matt Power for more details.

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