Senior UI Developer - 12-month contract - Brussels

• Architect and maintain our component library; ensure modular, reusable, and lean code.
• Translate Figma designs into high-fidelity, accessible components (WCAG 2.1+, ARIA).
• Manage NPM package deployment and versioning across dev/prod environments.
• Test rigorously across browsers & devices (BrowserStack experience preferred).
• Support integration of Vanilla JS components in React, Next.js, or TypeScript projects.
• Provide L2/L3 operational support to maintain 24/7 production stability.
• Maintain comprehensive documentation using Nunjucks; mentor a small developer team.

What We’re Looking For:

• 7+ years web/front-end development experience; 5+ years building/maintaining component libraries.
• Expert in Vanilla JS (ES6+) and SCSS; experience with server-side rendering & APIs.
• Hands-on experience with headless CMS (Sitecore preferred).
• NPM package management experience (publishing, SemVer, multi-env).
• Deep knowledge of accessibility standards and responsive design quirks (especially Safari iOS).
• Proficiency in Figma and Nunjucks templating.
• C1+ English, collaborative mindset, strong communicator.

Why Join Us:

• Take ownership of a critical system used across multiple web platforms.
• Lead a small, talented team and shape best practices.
• Hybrid flexibility with 2 days/week in-office.

If you are interested please send me your CV and I will contact you as soon as possible with further details.