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MAINSYS

Java Software Engineer

Hybrid

Louvain-la-neuve, Belgium

Mid level

Full Time

06-01-2026

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Skills

Problem Solving Java Docker Jenkins Architecture git Team Spirit Spring Maven

Job Specifications

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 between 0 and 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!

About the Company

Your Banking NearTech As a privileged partner of banks for more than 25 years, the MAINSYS group accompanies its clients in their new challenges of the digital transformation. Thanks to a very large business expertise, we offer concrete answers in the bank’s evolution and innovation projects : digital transformation, business intelligence, risk and regulatory compliance management. The success of our software integration activity has allowed us to create strong partnerships with several renowned editors (Misys/Finastra, Aval... Know more