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React JS Developer or Lead

CapgeminiLondon, United Kingdom
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We are seeking a skilled and passionate UI Developer with strong front-end development experience to join our team. The ideal candidate will have hands-on expertise in modern UI technologies and frameworks, with a keen eye for detail and a commitment to delivering accessible, high-performance web applications.

Your Role

  • Develop and maintain responsive user interfaces using JavaScript, jQuery, HTML5, CSS3, and ReactJS.
  • Implement and optimize styles using CSS preprocessors such as SASS or LESS.
  • Work with JavaScript frameworks including Node.js to build scalable front-end solutions.
  • Integrate APIs and handle asynchronous data using AJAX and JSON.
  • Ensure compliance with accessibility standards and best practices.
  • Apply Test-Driven Development (TDD) principles and write automated unit tests using mock object frameworks.
  • Collaborate with cross-functional teams to ensure seamless integration and deployment.
  • Utilize SCM tools like Git and Perforce for version control and collaboration.
  • Leverage tools such as SonarQube, Grunt/Gulp, and npm for code quality and build automation.
  • Conduct JavaScript unit testing to ensure code reliability and maintainability.
  • Optimize network performance and front-end load times for enhanced user experience.
Your Profile
  • Strong proficiency in JavaScript, HTML5, CSS3, and ReactJS.
  • Experience with CSS preprocessors (e.g., SASS, LESS).
  • Solid understanding of Node.js and modern JS frameworks.
  • Familiarity with AJAX, JSON, and RESTful APIs.
  • Knowledge of accessibility standards (WCAG, ARIA).
  • Experience with unit testing frameworks and TDD methodologies.
  • Proficiency in Git, Perforce, and build tools like Grunt, Gulp, and npm.
  • Understanding of network performance optimization techniques.

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FAQ

Is the React JS Developer or Lead position at Capgemini remote?
Yes. This role was posted on Remote Frontend Jobs, a job board that lists exclusively fully remote positions.
When was this React JS Developer or Lead job posted?
This listing was posted on September 11, 2025 and is still open for applications.
How do I apply for the React JS Developer or Lead position at Capgemini?
Use the apply button on this page — it takes you directly to the employer’s application page.

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