As part of the program to take over a part of the Ministry of Defence’s application landscape, we are looking for consultants to strengthen the internal teams.

The Defence program initially consists of the complete takeover of the operational management of about thirty business applications.

These applications are relatively diverse from a business and technological point of view.

The takeover activities can be broken down as follows:

• Handover/Takeover (documentation, application maintenance, development of new features, etc.)
• Re-engineering and/or complete rewriting of applications in order to align them with current development standards.

Languages

• French or Dutch: expert level
• English: expert level

Responsibilities

• Development / Maintenance of business applications
• Development of application components/webservices
• Contribute in the design of architecture components and building blocks (in close collaboration with technical lead or senior software architects)
• Participation in technical working groups, Scrum meetings and meetings with the users if needed
• Assistance in the testing, the technical documentation, the deployment, the evaluation and the reporting (JUnit, JIRA)

Experiences

• Minimum 5-7 years of full-time professional Java Development experience is required (Full-stack preferred – backend with good affinity for frontend is ok)
• Familiarity with multi-system integration and complex environments

Competencies

Technical knowledge and practical experience of required technologies to be able to start development and support directly (below):

• Java >= 21 and Spring Framework (core, jdbc, data, security, aop)
• JPA (with Hibernate as implementation)
• REST(ful) Web Services
• OpenAPI, Swagger
• Keycloak, Lombok, MapStruct
• SOA, backend for frontend, CQRS
• Test driven development (JUnit, Spring, Mockito, Cypress)
• Frontend (Angular 20) & backend abilities
• Maven, Docker, Openshift/Kubernetes, GIT (and GitLab CI), Sonar, …
• NPM
• OAuth 2.0
• Flyway or Liquibase
• Experience with relational database and O/R mapping: PostgreSQL, SQL Server, …
• Able to read and understand BPMN, UML & documentation practices
• Jira/Confluence
• Familiar with AGILE/SCRUM methodologies, test-driven development and continuous integration
• Problem solver, able to quickly understand existing code
• Solution and customer oriented
• Ability to integrate easily into an existing team and to supervise juniors

Mission & Working hours

• We are based in Brussels (just in front of Midi Station).
• This will be an initial contract until 31/12/2025 – The mission is long term and can be extended beyond 2025.
• Possibility of remote work (7h48 per day) with a requirement to be on site for a minimum of 2 days per week.