via indeed · 29 mai 2026 ·il y a 7 jours

Senior Java/Kubernetes Developer – Digital Transformation - Freelance

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Brussels Temps plein
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Job description

Daily rate: €480/day
We are looking for a Senior Java Developer to join a major digital transformation program.

You will contribute to the modernization of a critical legacy platform into a cloud\-native microservices architecture running on Kubernetes, using API\-first and event\-driven principles.

This initiative combines technical innovation with real business impact, offering a modern agile environment, complex engineering challenges, and collaboration with highly skilled teams.

Requirements

Your responsibilities
-------------------------

As a Senior Developer, you will play a key role in the design, development, and evolution of the new platform.

Main responsibilities


  • Design, develop, and maintain robust and scalable microservices

  • Contribute to the progressive migration from a monolithic legacy system to a cloud\-native architecture

  • Develop and maintain secure and high\-performance REST APIs

  • Participate in DevOps practices and CI/CD pipeline implementation

  • Collaborate closely with architects, DevOps engineers, and business teams

  • Contribute to technical decisions and architecture discussions

  • Ensure code quality, maintainability, and best development practices

  • Support observability, monitoring, and application performance initiatives

  • Participate actively in Agile/Scrum ceremonies

Technical environment
-------------------------

Java • Spring Boot • Kubernetes • REST APIs • CI/CD • DevOps • DB2 • SQL • ELK Stack • Linux • Git • Python • JSON • UML • Atlassian Suite • IntelliJ • VS Code

Profile required
--------------------

We are looking for a senior consultant capable of evolving in a complex and demanding technical environment.

Mandatory skills


  • Strong experience in backend Java development

  • Expertise with Spring Boot and microservices architecture

  • Solid hands\-on experience with Kubernetes

  • Proven experience in DevOps and CI/CD environments

  • Excellent knowledge of REST APIs

  • Strong SQL and DB2 experience

  • Good Linux and Git knowledge

  • Experience working in Agile/Scrum environments

  • Ability to work on complex, mission\-critical platforms

Nice\-to\-have skills


  • Python knowledge

  • Experience with legacy modernization programs

  • Familiarity with event\-driven architectures

  • Previous experience in public sector or large enterprise environments

Languages
-------------
  • Professional English required

  • French or Dutch is considered an asset

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200 postes ouverts · Bezons, Boulogne-Billancourt, Brétigny-sur-Orge, Charenton-le-Pont, Corbeil-Essonnes +28

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