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MAINSYS

Senior Java Software Engineer

MAINSYS
Belgium · Full-time · Mid-Senior

In order to design, develop and deliver new modules to our clients, MAINSYS is looking for


Software Engineer who will:


  • participate in the definition of the needs and choice of architectures,
  • take part in the conceptual and technical analyses of the architecture and software components,
  • participate in the development, integration and testing of the various software components,
  • be involved in the deployment of these components in our clients’ environments.


We coach our new Software Engineer and provide them with trainings adapted to the context of the projects and aiming at developing the required skills, both in IT and around the banking applications.



Your Profile

You are a Software Engineer and have a degree in computer science or equivalent


You have at least 5 years of experience (must have).


You speak French and are proficient in English. Dutch is an asset.


You have skills in Back-end Java development:

  • Jakarta EE 8+ and a good knowledge of Java 17+
  • Build up and maintain REST API and SOAP webservices
  • Spring 6 (included CDI, JPA)
  • A knowledge of JBoss EAP 8 is welcome
  • A knowledge of Docker is an asset



You are familiar with the following tools: GIT/Intellij/Maven (Jenkins, Nexus eventually)



You are dynamic, problem solving, self-taught, team spirit


Our Offer

  • An indefinite contract
  • A competitive salary, with plenty of fringe benefits included a mobility budget with the choice of a company car and/or reimbursement of public transport costs. Under certain conditions, this budget can even be used to pay your rent or mortgage
  • Great variety in job content
  • Great colleagues: open-minded, enthusiastic, dynamic
  • The opportunity to further develop your talents through our e-learning platform
  • A desk in a nice office and of course your own workplace @home (up to 3 days a week)



If you are this person, come and join us!

Key Skills

Ranked by relevance

java jenkins docker nexus
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Posted
Mar 03, 2026
Type
Full-time
Level
Mid-Senior
Location
Brussels Metropolitan Area
Company
MAINSYS

Industries

IT Services IT Consulting

Categories

Information Technology

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