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Java Developer

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Onsite

Java Developer

OPTIMUS IT SERVICES

Java Developer

Skills

DockerJavaMicroservicesSpring BootIBM CloudElasticsearchKubernetes

3 days ago

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Important information


Contract type:

Permanent

Location:

Brussels, Belgium

Work mode:

Onsite

Published on:

24 October 2026

What they need


Key Responsibilities

  • Design, develop, test and integrate software components within an Agile team, delivering valuable product increments at the end of each sprint.
  • Contribute to sprint backlog completion by collaborating across analysis, design, development, testing and integration activities.
  • Develop and maintain Java applications using Spring Boot, microservices architecture, Docker and Kubernetes.
  • Apply cloud development practices and ensure solutions align with architectural standards, security procedures and development guidelines.
  • Work with infrastructure components, including operating systems, networking, databases and middleware.
  • Collaborate closely with team members, share knowledge and communicate effectively to achieve squad objectives.
  • Promote continuous improvement in development practices, delivery speed and operational quality while adhering to Agile and Scrum values.

Experience Required

  • At least 3 years of relevant professional experience in software development.
  • Mandatory expertise in Java and Spring Boot , with experience in Docker, Kubernetes, microservices and cloud development .
  • Excellent understanding of IT architecture, including hardware, operating systems, networking, databases and middleware.
  • Knowledge of development methods, standards, security procedures and development tools.
  • Mandatory knowledge of Agile methodology and the ability to collaborate effectively within a Scrum team.
  • Strong analytical, communication and teamwork skills, with a commitment to continuous improvement and squad objectives.
  • English is mandatory , as it is used in meetings and all documentation.
  • French is used for day-to-day communication in the workplace. Dutch is a nice-to-have.
  • Working arrangement: 50% onsite and 50% homeworking .

Nice to have:

  • Integration experience involving distributed systems, mainframe technologies and infrastructure components.
  • Cloud development experience on IBM Cloud – DMZR.
  • Knowledge of KESMA and Elasticsearch.

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