Senior React Software Engineer

Location: Barcelona, Spain — Hybrid (3 days onsite, 2 days remote)

We are:

Wizeline, a global AI-native technology solutions provider, develops cutting-edge, AI-powered digital products and platforms. We partner with clients to leverage data and AI, accelerating market entry and driving business transformation. As a global community of innovators, we foster a culture of growth, collaboration, and impact.

With the right people and the right ideas, there’s no limit to what we can achieve.

Are you a fit?

Sounds awesome, right? Now, let’s make sure you’re a good fit for the role:

Key Responsibilities

• Lead the design, architecture, and implementation of the frontend application.

• Write clean, maintainable, and well-tested code using modern React (including React 18 features).

• Collaborate closely with backend engineers, designers, and product managers to deliver a seamless and high-quality user experience.

• Establish and enforce frontend best practices related to code style, component composition, accessibility, state management, documentation, and tooling.

• Lead the creation and maintenance of scalable UI systems, including component libraries and design systems.

• Provide technical mentorship to frontend team members, supporting growth and ensuring alignment with architectural decisions.

• Take ownership of the entire frontend development lifecycle, from planning to deployment.

• Partner with other engineering teams to integrate APIs and ensure optimal application performance.

Must-have Skills

(Remember to include years of experience)

• 7+ years of professional experience in frontend engineering with a strong specialization in React.

• Expert-level knowledge of ReactJS, including React Hooks and modern React 18 capabilities.

• Deep expertise in HTML (semantic markup, accessibility standards).

• Strong expertise in CSS, including vanilla CSS and scalable CSS methodologies.

• Hands-on experience with frontend tooling: Webpack, Babel, NPM/Yarn.

• Strong experience with Git and GitHub-based workflows.

• Experience working with CSS-in-JS libraries.

• Proven experience building and maintaining component libraries or design systems.

• Familiarity with Storybook for UI documentation and component-driven development.

• Experience with or strong understanding of microfrontend architectures.

• Bachelor’s degree in Computer Science, Software Engineering, or a related field.

• Advanced English communication skills.

Nice-to-have

• AI Tooling Proficiency: Leverage AI tools to optimize day-to-day work (e.g., code generation, analysis, documentation, research). Recommend effective use of AI and identify automation opportunities.

• Experience with performance optimization for large-scale frontend applications.

• Familiarity with accessibility automation tools and frontend testing frameworks.

• Understanding of cloud platforms (AWS, GCP, Azure).

• Experience contributing to open-source UI tools or libraries.

What we offer

• A High-Impact Environment 

• Commitment to Professional Development 

• Flexible and Collaborative Culture

• Global Opportunities

• Vibrant Community

• Total Rewards

Specific benefits are determined by employment type and location.

Find out more about our culture here.