Role Overview
KOOP is seeking a
Frontend Developer
to contribute to the ongoing development of
data.overheid.nl
—the national platform that makes Dutch government data discoverable and reusable.
You will play a key role in the
accessible redesign
of the platform and help implement a
future-proof, consistent, and reusable frontend
built on React.
Key Responsibilities
Translate user research insights into an accessible redesign.
Implement the new UI following
NL Design System
principles and WCAG accessibility standards.
Optimize the frontend and ensure seamless integration with backend systems.
Deliver high-quality, maintainable, and well-documented code.
Participate in the continuous development of data.overheid.nl, ensuring a reliable user experience for searching and reusing government datasets.
Requirements
Technical Skills
React
,
JavaScript
Experience with
WCAG / DigiToegankelijk
accessibility standards
Experience integrating with
REST APIs
Knowledge of
web security guidelines
Experience
3+ years frontend development
2+ years React experience
Preferred Skills
Experience with
Next.js
Working with design systems / component libraries
CI/CD (Git)
Drupal experience
UX knowledge
SOLID principles
SonarQube familiarity
Cypress for testing
SAFe Agile certification (or willingness to obtain)