Expert Java & microservices

Médiane Benelux; Brussel; Sur place; EUR 90 000 - 120 000; Plein temps

Résumé du poste

Médiane Benelux seeks a Senior Java Expert to join an Agile team of Java and Angular specialists. You will contribute to the design and implementation of an innovative platform built on modern microservices principles.

This role requires both technical excellence and a strong business mindset, with a focus on quality, security, and compliance with industry standards. Languages: French and/or Dutch (C2) and English (C1) are expected; you will collaborate across sectors emphasizing reliability and

Qualifications

• 10+ years Java development experience.
• At least one project using Java 21.
• 5+ years relational DB experience (MySQL, MariaDB, Oracle).
• 2+ years Spring Boot and Spring Data.
• 2+ years microservices and REST/JSON.
• 5+ years JPA/Hibernate.
• 10+ years with unit testing (JUnit 5, Mockito, PowerMock).
• 2+ years Agile/Scrum.
• 10+ years Maven for build/dependency management.
• OpenShift and/or Kubernetes project experience.
• Liquibase or Flyway experience, Git/GitLab.

Responsabilités

• Design, develop, and maintain microservices-based applications.
• Contribute to architectural decisions with cybersecurity mindset.
• Collaborate in an Agile/Scrum environment to deliver scalable solutions.
• Work with stakeholders to ensure user-oriented, value-driven delivery.
• Ensure compliance with ISO 9001, EN 50128, and ISO 27001 / NIS; maintain documentation.

Connaissances

Java development

Microservices

Spring Boot

Spring Data

REST API

JSON

JPA / Hibernate

Maven

OpenShift

Kubernetes

Liquibase / Flyway

Git / GitLab

Design patterns

Software architecture

Unit testing (JUnit 5, Mockito)

Outils

OpenShift

Kubernetes

Maven

Description du poste

Médiane Benelux: Career Booster! Since 2017, and with over 35 years of experience in France and Italy, Médiane Benelux is an engineering company specializing in software, electronics, and cybersecurity across key sectors such as Railways, Automotive, Energy, Medical, Aerospace, Space, Telecoms, Industry, and Defense.

What we offer:

• IT consulting and strategy
• Digital transformation and IoT solutions
• Project management and process optimization

As specialists in electronics, development, and embedded systems design, we operate from sensor to cloud.

Why choose Médiane Benelux?

• Human-sized company: Promotes teamwork and collaboration in a dynamic and stimulating environment
• Sharp technical expertise and tailored solutions for each sector
• Talent support: Personalized follow-up, continuous training, and skill development for our employees
• Custom solutions tailored to the specific needs of each client
• Culture of innovation: Participation in innovative and varied projects
• Ecovadis Gold certification: Commitment to equality, well-being, and responsibility
• Human values: Commitment, Respect, Trust, Listening

Happy at Work and Happy Clients labels by Choose my Company: A fulfilling work environment and optimal client satisfaction

Le poste :

Within the signalling design platform unit, we are looking for a Senior Java Expert to join an Agile team of Java and Angular specialists. You will contribute to the design and implementation of an innovative platform built on modern microservices principles. This role requires both technical excellence and a strong business mindset, with a focus on quality, security, and compliance with industry standards.

Main Responsibilities

• Design, develop, and maintain applications based on a microservices architecture.
• Contribute to architectural decisions and ensure alignment with cybersecurity principles.
• Collaborate proactively in an Agile/Scrum environment to deliver high-quality, scalable solutions.
• Work closely with business stakeholders to ensure a user-oriented and value-driven approach.
• Ensure compliance with ISO 9001 (quality), EN 50128 (signalling), and ISO 27001 / NIS (information security) standards.
• Maintain rigorous technical documentation to support audits and quality monitoring.
• Promote innovation and continuous improvement within the team.

Profil recherché :

Languages

• French and/or Dutch: C2 – full professional proficiency
• English: C1 – professional working proficiency

Technical Expertise

• Minimum 10 years of experience in Java development
• At least one project using Java 21
• At least 5 years of experience with relational databases (MySQL, MariaDB, Oracle)
• Minimum 2 years with Spring Boot and Spring Data
• Minimum 2 years with microservices architecture and web services (REST API, JSON)
• At least 5 years of experience with JPA and Hibernate
• 10 years of experience with unit testing frameworks (JUnit 5, Mockito, PowerMock)
• Minimum 2 years of experience with Agile/Scrum methodology
• 10 years of experience using Maven for build and dependency management
• At least one project involving OpenShift and/or Kubernetes
• Minimum 2 years of experience with Liquibase and/or Flyway
• Minimum 2 years with Git and GitLab version control systems
• Solid knowledge of design patterns and software architecture principles

Soft Skills & Expected Behaviours

• Clear understanding of the strategic impact of the role in railway systems projects.
• Core values expected: kindness, courage, positivity, reliability.
• Strong communication and presentation skills
• Ability to work independently and proactively within a team.
• Commitment to quality, documentation, and long-term engagement.