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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