Frontend Developer (Web Components / Accessibility) – Remote Worldwide | Up to €120K/year

🌍 Remote (Worldwide) | 📍 Spain HQ | 🕒 Full-Time (Flexible) | 💰 €90–120K/year

About CAT-TAG

CAT-TAG is developing the first smart GPS collar designed specifically for cats – with real-time tracking, virtual fence alerts, breakaway safety, and digital ID. Our mission is to protect our curious companions while providing peace of mind to their guardians.
We are backed by Wayra Accelerator, certified as an Innovative Startup by ENISA, and supported by European innovation funding.

The Role

We are looking for a Frontend Developer with deep expertise in JavaScript (ES6+), Web Components, semantic HTML, and accessibility (WCAG).
You will take ownership of building and maintaining our component library, which will serve as the foundation for our cross-platform app (web and mobile).

Key Responsibilities

  • Architect, build, and maintain a reusable component library based on Web Components.
  • Write clean, modular JavaScript (ES6+) and semantic HTML.
  • Ensure all components meet accessibility standards (WCAG).
  • Integrate the Design System styles provided by UI Developers.
  • Collaborate with UI/UX designers, UI developers, and backend teams.
  • Optimize components for performance, scalability, and compatibility.
  • Contribute to long-term frontend strategy and tooling decisions.

Must-Have Qualifications

  • 4+ years of professional experience in frontend development.
  • Expert-level knowledge of JavaScript, HTML5, and Web Components.
  • Proven knowledge of digital accessibility principles (WCAG).
  • Strong understanding of component-based architecture.
  • Experience integrating with REST/GraphQL APIs.
  • Experience with testing frameworks and CI/CD workflows.
  • Fluent in English (written and spoken).

Preferred Qualifications

  • Familiarity with Storybook for documenting components.
  • Basic knowledge of CSS fundamentals (to integrate).
  • Interest in security best practices.

What We Offer

  • Competitive salary: €90K–120K/year (gross)
  • Fully remote work environment
  • Flexible working hours
  • A supportive, international team passionate about innovative design
  • A product with real-world impact, built from the ground up

How to Apply

Please send your portfolio and CV to 📩 hi@cat-tag.com

 

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