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.