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# Senior Java Developer

- **Company:** Médiane Système
- **Location:** Brussel, Belgium
- **Experience:** Expert
- **Contract:** Permanent contract
- **Skills:** Clean Code Principles, Java (Programming Language), Agile Methodology, Automation of Tests, Cloud Computing, Software Quality, Code Review, DevOps, Hibernate (Java), Java Persistence API, Apache Maven, OpenShift, Scrum Methodology, SQL Databases, Git, AngularJS, Solid Principles, Kubernetes, Grpc, Jenkins, Microservices
- **Published:** July 22, 2026
- **Apply:** https://www.careerjet.be/jobad/be40f91e67ab18d6ddc38dc845c0a93130

## About the Role

10+ years of experience in Java development (expert level)
Strong background in large-scale, business-critical systems
Comfortable working in Agile environments
Analytical, proactive, quality-driven, with mentoring capabilities
Languages
French or Dutch: C2
Other national language: B1
English: B2

## Description

Our client, a key player in the railway infrastructure sector, is looking for a Senior Java Engineer to work on business-critical applications that consolidate infrastructure data and support real-time traffic planning and monitoring.
You will design, develop, and maintain robust, scalable, and secure Java solutions within modern microservices-based architectures.
Responsibilities
Design and implement new Java features and services
Maintain and evolve existing applications
Translate functional requirements into technical solutions
Investigate and resolve complex technical issues
Integrate automated tests and contribute to CI/CD pipelines
Ensure code quality (Clean Code, SOLID principles, security best practices)
Participate in code reviews and mentor developers Required qualifications :
Technical Environment
Java 11+ (Java 21 exposure), Spring (Boot, Cloud, Security), Maven, JPA/Hibernate, REST & gRPC, SQL, Git/Jenkins, Kubernetes/OpenShift, Angular exposure, Agile/Scrum, DevOps.


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