Freelance Backend Developer (Java) – Digital Products - VRT377681

Freelance Backend Developer (Java) – Digital Products

Brussels, Belgium
Start: June 2026 | Long-term freelance assignment
Full-time | Hybrid (2 days onsite + remote)

About the Role

Join a leading media organization and help shape the digital experience of millions of users. As a Backend Developer, you will contribute to the systems behind widely used digital platforms, ensuring performance, scalability, and reliability.

You'll be part of a dynamic product team responsible for critical services such as user authentication, profile management, and push notifications across multiple digital applications.

Your Responsibilities

• Take end-to-end ownership: from concept and development to testing and release
• Build and maintain high-quality, scalable backend systems
• Develop and integrate RESTful APIs and/or event-driven architectures
• Contribute to architecture decisions and best practices
• Work within a Scrum/Agile environment
• Support CI/CD pipelines, monitoring, and infrastructure as code
• Ensure code quality through testing (unit, integration, E2E)
• Collaborate closely with team members and share knowledge

Tech Stack

• Languages: Java (Spring Boot, Spring Security, Spring Data, Hibernate/JPA), Go, TypeScript, JavaScript
• Cloud: AWS (ECS, Lambda, S3, DynamoDB, )
• Identity & Security: OIDC, OAuth2, SAP Customer Data Cloud (Gigya)
• Testing: JUnit, Mockito, Jest, Playwright
• Tools: GitHub, Jenkins, Docker

Your Profile

Must-Have

• Minimum 3 years' experience as a Backend Developer
• Strong expertise in Java (Spring ecosystem)
• Experience with REST APIs and/or event-driven systems
• Familiar with Git and code reviews
• Solid knowledge of testing (unit, integration, E2E)
• Ability to work independently and in a team

Nice to Have

• Experience with AWS or other cloud platforms
• Knowledge of Go
• Experience with identity & access management (OIDC, OAuth2, SAML)
• Familiarity with CI/CD, DevOps practices, and infrastructure as code
• Experience working in Agile/Scrum teams
• Knowledge of JavaScript/TypeScript
• Fluent in Dutch (C2 level)

What's in It for You

• Work on platforms used by millions of users daily
• Join a collaborative, innovative, and people-oriented team
• Flexible hybrid working model
• Opportunities to learn, experiment, and grow technically
• Long-term freelance engagement with potential extensions

Additional Info

• Freelance contract via intermediary
• Full-time engagement
• Hybrid work setup (Brussels + remote)