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FreelanceFull-time Brussels, hybrid

Application Architect / Technical Leader

A Belgian public-sector organisation

What you will do

You will work as Application Architect and Technical Leader within a programme that delivers digital solutions for child and maternal health services in the public sector. Your role covers architecture design, technical leadership, development, and quality assurance.

Your responsibilities include:

  • Create and maintain software architecture documentation
  • Design technical solutions based on functional specifications
  • Define and enforce development best practices: clean code, SOLID principles, DRY
  • Collaborate as technical expert with your development team
  • Develop application modules and optimise code for memory management and response times
  • Organise refactoring to simplify existing code
  • Conduct code reviews and validate unit tests
  • Validate deployment and delivery of solutions across different environments
  • Ensure development quality aligns with enterprise standards
  • Coach and mentor developers under your technical responsibility
  • Communicate with stakeholders and provide regular feedback to the team leader
  • Support the team leader in qualifying and estimating work packages

You will work on projects including a child health record system (0-6 years), a prenatal social care solution, and a vaccination data management platform. The environment is Agile/Scrum with a service-oriented architecture.

What we are looking for

Technical expertise:

  • Expert level: Java, Spring/Spring Boot/JPA, JUnit/Mockito, REST/OpenAPI, DB2/MySQL, CI/CD deployment (Docker)
  • Confirmed level: Angular 21/Material, Flyway, Scrum
  • Junior level: IndexedDB/Dexie/Service Worker

Technology stack:

  • Angular 21, Java 8/JEE7, Java 21, Spring Boot, NgRx, DB2, MySQL, Flyway
  • Build tools: Apache Maven, Git/GitLab CI/CD, Nexus

Language:

  • Native or fluent French (the mission is conducted exclusively in French)

Experience and approach:

  • Proven experience as an Application Architect
  • Strong focus on code quality, performance, and technical debt reduction
  • Ability to mentor and guide development teams
  • Collaborative approach with functional analysts, testers, project managers, and middleware specialists

The setting

  • Freelance contract for 2 months initially (mid-November 2026 to end 2027 for the full programme)
  • Hybrid working: minimum 50% on-site presence required in Brussels
  • Agile/Scrum methodology
  • Working exclusively in French
  • Part of a larger team request including a Scrum Master and multiple developers

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