Javascript Developer

Job Title: React Developer Job Type: B2B Contract Location: Barcelona (1-2 days per week on site) Rate: 200 Euros / Day React Developer - Key Responsibilities: Translate designs and wireframes into high-quality, reusable React components. Optimize components for a variety of devices and browsers. Write clean, maintainable code. Utilize libraries like Redux or Context API to manage application state in complex projects. Work effectively with designers, back-end developers, and other stakeholders. Ensure code quality and maintainability using frameworks like Jest and React Testing Library. Continuously learn and adapt to the evolving React ecosystem React Developer - Experience and Qualifications Required: 3 years' experience as a React Developer Proficiency with core React concepts, components, state management, props, JSX syntax and modern JavaScript features (ES6). Familiarity with Git for version control and collaboration, including experience with Git actions for continuous integration and deployment. Ability to fetch data from and interact with RESTful APIs. Proficient in using tools like SonarQube and GitHub Copilot, integrating tests within CI/CD pipelines, and utilizing frameworks such as Vitest, Pytest, and Playwright. Developers are expected to take full responsibility and accountability for the quality and thorough testing of their code before it is checked in and integrated with the rest of the stack. Familiarity with SonarQube for continuous inspection of code quality and security vulnerabilities. Interviews: June 2025 Start Date: July 2025 How to Apply: Apply to Gary Hargreaves at X4 Technology to learn more about the role or connect with me on LinkedIn to hear about regular job updates available with X4 Technology

Location: barcelona-barcelona, ES

Posted Date: 6/17/2025