Rhox

Application Architect

Closes on 07/10/2026
Brussels
Hybrid, 60% on site
Starts on 01/10/2026
Remuneration: 2.850 - 3.300 EUR/mo gross+ extralegal advantages ·Freelance also possible

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We're looking for an Application Architect to shape technical changes across enterprise-facing applications and document services. You'll strengthen performance, observability and monitoring as usage grows, while guiding a Java and Spring Boot environment.

What you'll do

  • Define and track application architecture through technical and functional changes.
  • Prepare and follow up development, maintenance and migration work.
  • Review designs and coach developers on implementation choices.
  • Develop secure REST and SOAP APIs.
  • Improve performance, observability and monitoring as usage grows.

What you bring

  • Mid-level application architecture experience with Java/Jakarta, Spring Boot, Angular and JavaScript.
  • Design patterns, CI/CD, SQL and relational databases.
  • Docker, Kubernetes and OpenShift environments.
  • IAM, Keycloak, OWASP, OAuth and OpenID security.
  • JBoss experience.
  • French, English and Dutch, B2 in each.

What's next?

The people who do well here are the ones who saw themselves in this description. Not because they match every line, but because the mission felt right for them.

We are actively hiring for this position. Applications are reviewed by our team, and matching profiles receive a call to discuss the role in detail.

It takes under a minute to apply. Your email, your CV. That is all we need to start the conversation.