Java Developer - Brussels Start Date: June 2026 Duration: 12 months (with potential extensions) Location: Brussels, Belgium (2-3 days/week on-site) You will be working on critical financial system initiatives within a public sector client. These are large-scale, high-impact programmes focused on modernising financial infrastructure using robust and scalable Java-based solutions in a high-availability environment. Your responsibilities Design and develop enterprise Java applications Deliver high-quality, scalable solutions in multi-user environments Work closely with functional analysts to translate requirements Maintain and enhance existing applications Adapt systems to evolving technical and business needs Your profile MUST-have skills & experience: 5 years experience as a Java Developer (enterprise environment) Strong core Java expertise Experience with: REST/Web Services WSDL, XML, XSD JAXWS, JSON Spring Boot (mandatory) Container platforms (OpenShift or TKGI) Version Control (GIT) English (mandatory) Nice-TO-have skills: French or Dutch AWS cloud experience Test automation Swagger/OpenAPI Agile Scrum Public sector experience Eligibility requirements: Medior-level (5 years experience) Right to work in Belgium (EU or valid permit) Available May/June 2026 Working conditions 2-3 days onsite in Brussels Flexible depending on project needs 12-month contract with extension potential