Senior & Expert Java Developers

We are currently hiring multiple Senior and Expert Java Developers to join a large-scale programme within a complex public sector environment. This is a long-term opportunity to contribute to critical systems and transformation projects, working across multiple high-impact streams in a collaborative, enterprise setting. Roles Available 2 × Senior Java Developers (5-10 years' experience required) 5 × Expert Java Developers (10+ years' experience required) Developers will be assigned across several projects, covering core systems, transversal initiatives, risk platforms, and front-end integrated solutions. Location & Working Pattern Brussels (easily accessible via public transport) Hybrid model: 2-3 days onsite per week (flexibility depending on team needs), Design, develop, and maintain robust Java-based applications Contribute to large-scale, enterprise-level systems and platforms Collaborate with cross-functional teams across multiple projects Ensure high-quality, scalable, and maintainable code Participate in system design, technical discussions, and best practice implementation Support integration across various systems and domains

Strong experience in Java development within complex IT environments Senior level: 5-10 years' experience Expert level: 10+ years' proven experience Experience working on large-scale or enterprise projects Strong understanding of software development best practices Ability to work collaboratively in multi-team environments