ITproposal

Freelance Backend Developer (Java) – Digital Products - VRT377681

ITproposal  •  Brussels, BE (Hybrid)  •  23 days ago
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Job Description

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)
ITproposal

About ITproposal

As ITproposal we have a very large network of engineers (with our own employees) where we support our Partners all over the world. We combine our experience and knowledge to deliver the best IT solutions. When creating or obtaining projects, we focus on the client and understanding their needs and expectations. We have the competences which allow us to offer a wide range of IT services.

Industry
IT & Software
Company Size
11-50 employees
Headquarters
Amsterdam, NL
Year Founded
2019
Website
itproposal.com
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