Senior Java Full-Stack Developer
Brussels-Capital
Digital - Development
Work experience: 5-7
Reference number: 92159

Join a dynamic and forward-thinking team where your skills will be critical in delivering high-quality software solutions within the technology sector. We are seeking a dedicated professional who is ready to tackle complex challenges in a collaborative environment.

As a suitable candidate, you are an accomplished Full-stack Developer with extensive experience in both front-end and back-end technologies. If you are passionate about crafting innovative applications and enjoy mentoring others, this opportunity is designed for you.

  • You develop and maintain web applications using Java, Angular, and related technologies.
  • You collaborate with cross-functional teams to define, design, and deliver new features.
  • You ensure the performance, quality, and responsiveness of applications.
  • You identify and correct bottlenecks and fix bugs.
  • You help maintain code quality, organization, and automation principles.
  • You provide technical guidance and mentorship to junior developers.
  • You stay current with the latest industry trends and technologies to propose innovative solutions to the team.
  • You implement and adhere to Test-Driven Development (TDD) practices for robust, high-quality code.
  • You write and execute unit tests, integration tests, and end-to-end tests.

What are we looking for?

  • You have solid experience as a Senior Java Developer with clear exposure to full-stack development.
  • You are proficient in Java 17+ and Spring Boot, including Spring Security and Spring Data JPA.
  • You are comfortable building and consuming REST APIs and understand backend design patterns.
  • You have hands-on experience with Angular, TypeScript, HTML, and CSS for front-end development.
  • You work confidently with PostgreSQL and understand relational data modeling and query optimization.
  • You apply automated testing practices using tools such as JUnit, Mockito, or AssertJ.
  • You are familiar with modern development practices such as CI/CD and containerized environments.
  • You work in a structured way, communicate clearly, and take ownership of your work.
  • You are fluent in French, Dutch and English

Nice to have

  • Experience with hexagonal architecture or workloads deployed on Kubernetes / OpenShift.
  • Exposure to tools such as Docker, GitLab CI/CD, Jenkins, Tomcat, or Nginx.
  • General exposure to other backend technologies that helps you navigate heterogeneous environments.

What do we offer?

Location: Brussels (hybrid)

Start date: As soon as possible

Duration: Until end of August 2026

Contract: Freelance or Permanent

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