We are supporting a leading Belgian bank on several business-critical digital initiatives. We are looking for an experienced Backend Java Developer with a good understanding of frontend technologies to join a modern, modular engineering environment. Logistics Role: Freelance Backend Java Developer Contract: 24 months (liklihood of extension) Location: Brussels (Hybrid - 2 days/week on-site) Languages: English + French or Dutch Start Date: End of February Rate: Competitive & negotiable Responsibilities Develop and maintain scalable backend services using Java and Spring Boot Contribute to greenfield and platform evolution projects Translate business and regulatory needs into technical solutions Apply clean code practices, TDD, and pair programming Support and evolve architecture using DDD and hexagonal principles Work with CI/CD pipelines and containerized environments Participate in code reviews and agile ceremonies Collaborate with frontend teams when needed Required Skills 6+ years of backend Java experience Strong Spring Boot expertise Experience with Kafka or event-driven systems Solid knowledge of REST APIs and relational databases (Oracle preferred) Experience with Docker and Kubernetes Familiarity with CI/CD, Git, GitLab, Jenkins, SonarQube Working knowledge of frontend technologies (Angular, React, TypeScript) Comfortable working autonomously in Agile teams Nice to Have Experience in banking, financial services, or risk domains Exposure to legacy modernization or modularization Knowledge of DevSecOps or security-by-design Experience in Spotify-model squads Interested? Get in touch to discuss details and next steps.