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Aubay Belgium

Senior Java Developer

Aubay Belgium
Belgium · Full-time · Mid-Senior

API REST/JAVA/DevOps/Agile SCRUM/UML/JSON & XML/Windows, Linux


On behalf of our clients operating in the public sector, we are recruiting Senior Java developers for long-term assignments.

As a Senior JAVA developer, you will be involved in new and ongoing projects within large development teams to improve efficiency and deliverables. You will join a strategic programme aimed at the complete rewrite of a critical monolithic application — comparable to a banking platform (managing payments, accounts, and reimbursements) combined with an accounting system — into a modern, modular, and scalable microservices architecture.


Tasks:

  • The developer will join one of the key priority groups: accounting management, transaction and order management, rules management, or interface management.
  • Actively participate in the Scrum team’s dynamics and develop features based on prior functional and technical analysis.
  • Perform unit testing to ensure code quality and reliability.
  • Work in continuous collaboration with the functional analyst and testers from the beginning of each story.
  • Demonstrate strong anticipation skills, ensure smooth inter-team communication, organizational flexibility, commitment to quality and maintain a high level of technical rigor.
  • As a Senior Consultant, actively transfer knowledge to junior collaborators


Profile:

Required Senior-Level Experience

  • Java (advanced development expertise), REST APIs (including BelgIF standards), asynchronous messaging (Command/Reply & Event-driven architectures), Spring Boot and Angular
  • DB2 and SQL
  • DevOps tools & platforms: Kubernetes, ArgoCD, Vault, GitLab, Git, Agile SCRUM methodology
  • Operating systems: Windows & Linux
  • UML, and data formats JSON & XML
  • Fluent in French or Dutch + very good English

Very useful experience:

  • WebLogic, ELK, Atlassian Suite (Jira, Confluence)
  • Intellij, Visual Studio Code, Eclipse, NetBean, Github, fisheye, ActiveMQ, Cucumber,etc..


What we offer:

We offer Permanent contracts as well as Freelancing contracts for long term missions. Employees are offered a full salary package in line with the market and including many incentives (meal vouchers, insurances, 13th & 14th month, transport subscription and/or company car, etc.)

We care about your satisfaction by following up your mission and supporting you with the highest attention.

Therefore with Aubay, Employees or Freelancers are equally considered as part of the company!


About us:

Aubay is an international IT services agency founded in 1998 who advises companies on their digital transformation. We are active in 7 European countries (France, Belgium, Luxembourg, Spain, Portugal, Italy, U.K.) and our offices are based in Brussels, Namur and Luxembourg (Belux Area).

Key Skills

Ranked by relevance

java microservices spring boot kubernetes gitlab vault scrum jira git elk
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Posted
Feb 17, 2026
Type
Full-time
Level
Mid-Senior
Location
Brussels Metropolitan Area

Industries

Software Development

Categories

Consulting Information Technology

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