Your mission
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* Design and build modern React / Next.js applications that stay maintainable as they grow.
* Make and defend architectural decisions --- and understand the performance consequences of them.
* Set front-end standards, build reusable components, and create patterns the whole team builds on.
* Work closely with our back-end developers to integrate APIs and business logic cleanly.
* Own quality end to end, including in production: reading logs, tracing issues, and diagnosing incidents together with our DevOps and sysadmins rather than handing them off.
* Improve performance, accessibility, and overall UX across projects.
* Review code, raise the bar, and help good front-enders across our teams become even better --- without slowing them down.

Your profile
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* 5+ years in front-end development, with deep, current React and TypeScript experience.
* Real production experience with Next.js --- you understand rendering strategies (SSR / SSG / ISR / CSR), hydration, routing, and *when to use which*, not just how to scaffold an app.
* A strong grasp of front-end architecture: component design, state management, and how structural choices affect maintainability, bundle size, and runtime performance.
* The ability to measure and improve performance (Core Web Vitals, bundle analysis, profiling) --- and to understand the cost of the trade-offs you make.
* Solid experience integrating front-ends with APIs and back-end systems.
* Comfort across the full lifecycle: version control, testing, debugging, CI/CD, deployment, and maintenance.
* Excellent English and the confidence to work directly with product owners and clients.
* Senior judgment: you know when to be rigorous and when to be pragmatic, you take ownership of outcomes, and you make the people around you better.

**Nice to have:** Python/Django and SQL (you'll work closely with our back-end teams), real depth in accessibility, a good design sensibility, or experience setting standards within a team.

Why us?
=======

* Challenging custom software projects.
* A highly skilled and technical team.
* Short communication lines and little bureaucracy.
* Significant influence on front-end architecture and development standards.
* Opportunities to improve processes and shape the future of front-end development within the company.
* A culture that values expertise, ownership, and continuous improvement.
* A salary between €3000 - €5000,- based on experience.
* A training budget for courses, certifications, and industry events.
* 25 vacation days to ensure sufficient rest and relaxation.
* An attractive (optional) pension plan in which we double your contribution.
* A company laptop and phone.
* Flexible working hours that you can arrange yourself.
* Hybrid working is fully supported.
* Fun outings with your team and the chance to challenge your colleagues to a game of table tennis, chess, or pool.