Position Overview

You will be joining our tech department of around 35 colleagues.

In this role, you will design and build modern, responsive user interfaces that deliver an exceptional user experience. You’ll collaborate with cross-functional teams to turn UI/UX concepts into scalable, accessible solutions, ensuring performance, reliability, and maintainability. This position involves working with modern web technologies and frameworks while contributing to a dynamic, fast-paced environment.

You will collaborate with internal stakeholders to understand user needs, manage development cycles, and ensure customer data security. You’ll also release your solutions into production with the support of your team.

Key Tasks & Responsibilities

• Work closely with the development team and internal stakeholders
• Translate UI/UX designs from Figma (or similar tools) into responsive, accessible web components
• Maintain and evolve a shared design system and component library (e.g., Storybook)
• Ensure interfaces meet accessibility standards (WCAG) and support localization
• Structure scalable Next.js applications, including routing and layouts
• Implement robust data fetching and state management (e.g., React Query, Zustand/Redux)
• Integrate REST/GraphQL APIs and handle authentication and authorization flows
• Optimize frontend performance and responsiveness
• Create and maintain automated tests (unit, integration, end-to-end) using tools like Jest, React Testing Library, and Playwright
• Monitor and resolve frontend bugs, regressions, and performance issues
• Participate in code reviews and architectural discussions
• Write and maintain clear documentation for components, patterns, and frontend standards.

Requirements & Qualifications

• Relevant HBO/WO diploma, for example in Computer Science, Software Development, or a related field
• 3+ years of experience in a front-end development role
• Available at least 32 hours a week
• Strong proficiency in React and Next.js
• Solid experience with TypeScript and modern CSS frameworks (e.g., Tailwind CSS)
• Familiarity with state management and data-fetching patterns
• Experience building responsive, accessible, and performant web applications
• Knowledge of testing frameworks (e.g., Jest, React Testing Library, Playwright)
• Understanding of web security principles (e.g., XSS, CSRF)
• Experience with geospatial visualization libraries (e.g., Orbit, Cesium, MapLibre, Three.js) is a plus
• Demonstrated ability to adapt to changing priorities and maintain a flexible mindset.

What we offer you

• An authentic, collaborative work environment, where your ideas are always valued
• A competitive salary based on your knowledge, skills and experience.
• 25 vacation days per year
• Commuting allowance
• Hybrid work (at least 3 days in the office) and flexibility in your work hours
• A collective pension, with the basic premium fully paid by us
• An international work environment, where diversity and inclusiveness are highly valued.

And on top of this…

• Unique opportunity to quickly learn about a lot of new exciting technologies
• Opportunities to work with terabytes of data, and to work with AI hands on to solve concrete client requests
• Work in an agile team where your solution will quickly be released to production
• Independence in your work where your input is valuable and will directly impact the product for the better
• An environment where you’ll never get bored