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
• Location: Brussels (Hybrid - 2 days/week on-site)
• Languages: English + French or Dutch
• Start Date: ASAP / January
• 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.