Senior Full-Stack Java / Angular Developer

Brussels | Hybrid | Freelance | ASAP | Long-term

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