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Required Skills
- In-depth knowledge of React.js: Proficiency with core React concepts, components, state management, props, JSX syntax, and modern JavaScript features (ES6+).
- Strong experience working with design systems: Proven ability to build and maintain reusable, scalable component libraries; direct collaboration with UX designers using tools such as Figma and Storybook is essential.
- User experience (UX) mindset: All front-end developers are expected to exhibit strong UX attitudes, consistently prioritizing usability, accessibility, and user-centric principles in every aspect of their work.
- Demonstrable experience as a React developer with a track record of applying design system guidelines and partnering closely with design teams to ensure polished, intuitive interfaces.
- Familiarity with modern JavaScript features: Proficient in features such as arrow functions, classes, modules, and promises, all of which enhance code readability and maintainability.
- Experience with front-end build tools: Comfortable leveraging Vite, Babel, npm (or yarn) for development workflows, bundling, and dependency management.
- Version control systems: Skilled in using Git for version control and team collaboration, including automation with Git actions for continuous integration and deployment.
- RESTful APIs: Ability to effectively fetch data from and interface with RESTful APIs.
- Testing frameworks: Proficiency with tools such as SonarQube and GitHub Copilot, integrating tests into CI/CD pipelines, and utilizing frameworks such as Vitest, Pytest, and Playwright; full ownership of code quality and comprehensive testing prior to integration is required.
- Code quality tools: Familiarity with SonarQube for ongoing code quality and security analysis.
Key Skills
Ranked by relevance
ux
javascript
react
git
continuous integration
design systems
reactjs
figma
yarn
cicd
npm
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Login to Apply
- Posted
- Jan 14, 2026
- Type
- Contract
- Level
- Mid-Senior
- Location
- Barcelona
- Company
- KBC Technologies Group
Industries
IT System Testing
Evaluation
IT System Data Services
Categories
Analyst
Design
Product Management
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