Infinity Quest
Front End Developer-React
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Front End Developer-React
Front End Developer – React (Sheffield, UK) – Inside IR35
Contract Role | Hybrid (3 Days Office | Remotely Flexible)
About the Role
We are looking for a skilled Front End Developer specialising in React to join our team based in Sheffield, UK, with flexibility for a hybrid (3-days-on-site) model. This is an inside IR35 contract opportunity.
Key Responsibilities
- Develop high-performance, scalable frontend applications using React and modern tooling.
- Write clean, well-structured TypeScript/JavaScript code with a focus on maintainability.
- Build responsive and WCAG-aligned UI/UX, ensuring accessibility and inclusivity.
- Debug and optimise codebases for performance, including layout fixes, functional enhancements, and defect resolution.
- Implement robust state management, component design, data-fetching strategies, and caching mechanisms.
- Collaborate with cross-functional teams to deliver user-centric solutions.
- Write and maintain unit/integration/e2e tests and enforce code quality standards.
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Requirements
Technical Skills
- Proven React experience: Building production-grade web applications.
- TypeScript/ES6+ JavaScript: Strong proficiency required.
- HTML5/CSS3: Deep expertise in responsive layouts, mobile-first approaches, and modern CSS (Flexbox, CSS Grid, etc.).
- Browser APIs & Performance: Understanding of modern web APIs and techniques for optimisation.
- Testing & Debugging: Experience with unit/integration/e2e testing frameworks (e.g., Jest, Cypress, testing-library).
- Accessibility (a11y): Hands-on experience with WCAG best practices.
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Soft Skills
- Excellent communication and collaboration across teams (design, backend, product).
- Ability to interpret requirements and deliver high-quality solutions efficiently.
- Problem-solving mindset with a focus on debugging, refactoring, and optimising legacy/code.
This role is ideal for candidates with 3+ years in frontend development, specialising in React and TypeScript. Although an inside IR35 arrangement will apply.
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