Senior React Software Engineer

November 5, 2026

Senior

Barcelona, Spain

Also worth knowing

English is required

Description

A global AI-centric technology solutions provider is hiring a Senior React Software Engineer to build AI-powered digital products and platforms. The role centers on frontend development with React, JavaScript, and Next.js, including component libraries, design systems, and accessible interfaces meeting WCAG 2.1 AA. The company offers benefits, learning programs, free certifications, and a flexible, remote-friendly work policy.

Responsibilities

Design and implement scalable, maintainable, and high-quality frontend solutions across different types of products
Work closely with Product, Design, and Backend teams to deliver high-quality user experiences

Requirements

Strong hands-on experience with React, JavaScript, and Next.js
Experience working with CSS-in-JS solutions
Experience building, maintaining, or working with reusable component libraries and design systems
Hands-on experience using Storybook for developing, documenting, and testing UI components
Strong understanding of web accessibility principles and experience developing interfaces that meet WCAG 2.1 AA standards
Strong focus on writing clean, reusable, tested, and well-documented code
Strong communication skills in English
BS/MS in Computer Science, Engineering, or a related subject
Experience working directly with clients or stakeholders
Hands-on experience working in an Agile environment
Strong understanding of modern web standards, including HTML5 and CSS3
Experience with responsive design and cross-browser development
Strong understanding of UI/UX principles and user-centered design
Experience contributing to or establishing frontend design systems and component standards
Experience with frontend testing frameworks and practices
Experience optimizing frontend applications for performance, scalability, and maintainability
Experience working across different products, architectures, and technology stacks
Leverage AI tools to optimize day-to-day work including drafting, analysis, research, coding, or process automation