Senior Design System Developer

At Capitole, we are looking for a Senior Design System Developer to join a multidisciplinary and international team working on cutting-edge eCommerce platforms.

This role is ideal for experienced frontend engineers with a strong focus on UI componentization , design system architecture , and a keen eye for visual consistency and accessibility .

Key Responsibilities

Build and maintain scalable and consistent design systems for B2C / B2B applications

Translate UX / UI designs into reusable, performant, and accessible components

Collaborate with product, design, and engineering teams to ensure seamless user experiences

Work with monorepos, shared libraries , and internal npm package distribution

Ensure strict adherence to WCAG accessibility standards and atomic design principles

Drive best practices in UI development and contribute to internal documentation and tooling

Must Have

Strong knowledge of styling libraries like TailwindCSS, Styled Components , or similar

Advanced skills in vanilla CSS , responsive design, and visual polish

Proven track record building or maintaining design systems at scale

Experience collaborating cross-functionally with design and product teams

Fluency in accessibility standards (WCAG) and design tokens

Professional proficiency in English

1,200 per year in training

Free private health insurance

Flexible compensation on transport, childcare, and meal vouchers

Access to 10K+ gyms across Spain via Wellhub (Gymforless)

Events, team buildings, and afterworks every two months

We sponsor our own football team – join if you’re up for it!

Internal tech communities to learn, share, and grow

The employee will adhere to information security policies :

• Access to confidential information related to (Tu Empresa) and the client project
• Compliance with internal and client security policies and guidelines
• NDA signature required