Senior JavaScript frontend Engineer to $5000

We are a Belgian SaaS company developing a suite of B2B web applications. Our core product, HyperPortal, is a no-code platform that allows organizations to automate business processes and build structured databases without requiring technical knowledge. On top of that product we have another SaaS called HyperBuilder, for building complex websites with dynamic data, and in the future we would also like to add e-commerce functionality.

We're looking for a pro-active frontend developer with an eye for details and a strong feeling for UI/UX.

6+ years of commercial experience in front-end or full-stack development.

Proven experience building large-scale, complex products (SaaS platforms, enterprise solutions, high-load systems).

Solid understanding of microservices architecture and its impact on frontend development.

Deep knowledge of JavaScript and TypeScript (ES5+, ES6+, and modern standards).

Strong practical experience with RxJS and reactive programming principles.

In-depth understanding of React architecture and scalable application design.

Experience with state management solutions in React (Redux, MobX, or similar).

Hands-on experience writing unit tests (Karma, Jasmine, Jest, or equivalent frameworks).

Strong ownership mindset, taking responsibility for the product from architectural decisions through release and ongoing support.

What We Offer:

Participation in a long-term product with real technical autonomy.

Opportunity to influence the technology stack, development processes, and team structure.

Flexible working schedule.

Remote or hybrid work format.