🚀 Freelance Java Back-end Developer – Brussels
We are looking for an experienced Freelance Java Back-end Developer to join a high-visibility Agile environment in Brussels. You will work in a cross-functional squad responsible for critical customer-facing products within a large-scale enterprise IT landscape.
The team focuses on building and evolving digital solutions used across multiple channels and business lines, with a strong emphasis on back-end development, integrations, and modernisation.
💼 Your mission
As a senior back-end developer, you will:
* Maintain and further develop existing Java applications
* Build new back-end services and applications
* Migrate legacy applications to newer versions and architectures
* Work on integrations with third-party providers
* Translate business requirements into clean, high-quality code
* Design, build and maintain performant and reliable Java applications using Spring
* Write unit tests and ensure robustness, performance and scalability
* Actively participate in code reviews, refactoring and CI/CD practices
🧠 Your profile
* Minimum 4 years of relevant experience as a Java Developer
* Strong professional knowledge of English (Dutch and/or French is a plus)
* Solid experience with:
* Java, Spring, Maven
* RESTful APIs
* Oracle DB
* OO principles, SOLID, DDD and design patterns
* Hands-on experience with:
* Git, CI/CD pipelines
* Jenkins, SonarQube, Fortify, Nexus IQ (or similar tools)
* Test Driven Development
🔁 Agile mindset
You thrive in a Scrum/Agile environment and believe in:
* Team success over individual heroics
* Knowledge sharing and continuous improvement
* Pair programming and constructive code reviews
* Transparency, feedback and adaptability
🤝 Soft skills
* Strong communication and collaboration skills
* Able to challenge requirements from a technical perspective
* Proactive, accountable and comfortable taking the lead when needed
* Committed to long-term collaboration within a team
📍 Location: Brussels
🧾 Contract: Freelance
💻 Role: Java Back-end Developer