Senior Full-Stack Java / Angular Developer

We’re looking for a strong Senior Full-Stack Developer with solid Java, Angular and Python experience to join a long-term digital modernisation project in Brussels. The team is currently rewriting and modernising a number of legacy business applications, moving them towards a new architecture and more modern development standards. You’ll join a 6-person development team made up of developers, a business analyst and a project manager. What you’ll be doing: Rewriting and modernising existing legacy applications; Developing new functionality within a redesigned architecture; Analysing existing applications and translating legacy behaviour into modern solutions; Using Python to support and facilitate the migration and rewriting of legacy applications; Developing robust back-end and front-end solutions; Working with REST APIs and event-driven architectures; Collaborating closely with analysts and the business to understand functional requirements; Contributing to technical decisions and continuous improvements; Working in an Agile environment with a well-structured backlog.

A key part of the challenge is understanding an existing and sometimes complex application landscape quickly, including functionality hidden in legacy batch processes.

Tech stack (must-have): Strong Java development experience; Strong Angular experience (5+ years); Python – required for the application modernisation/migration work; Spring Boot; REST / API-first development; Java EE / JSF knowledge; RabbitMQ / event-driven architecture; Keycloak; Agile experience.

The profile: We’re looking for someone who is technically strong, autonomous and able to get up to speed quickly in an existing environment.

You should be: A fast learner; Autonomous and proactive; Comfortable working in a team; Open to feedback and different perspectives; Pragmatic and solution-oriented; More interested in delivering quality solutions than taking a leadership role.

Practical details: 📍 Brussels – hybrid, 2 days/week on-site; 📅 Start: ASAP; ⏳ Duration: Long-term; 💼 Freelance – full-time; 🌍 Languages: French or Dutch + English; 🗓️ Team day: First Tuesday of each month.