SA MAINSYS GROUP
Java Senior Software Engineer
Skills
20 days ago
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Important information
Contract type:
Permanent
Location:
Brussels, Belgium
Work mode:
Hybrid
Published on:
29 September 2026
What they need
In order to design, develop and deliver new modules to our clients, MAINSYS is looking for Senior 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.
- lead specific changes and coordinate the various stakeholders involved.
Your Profile
You are a Senior Software Engineer and have a degree in computer science or equivalent [MUST HAVE]
At least 5 years of experience in Java development is required, with a strong focus on performance, maintainability, and ease of monitoring.
You speak French and are proficient in English. Dutch is an asset.
You have skills in Java development:
- Java 17+
- Build up and maintain REST API
- Spring Suite 6 and 7 (spring-rest, spring-security, spring-boot)
- A knowledge of JBoss EAP 8 , Jboss Server or RHBK is welcome
- A knowledge of Docker is an asset
- A knowledge of Message Queuing (IBM) and Kafka is an asset
- You are dynamic, problem solving, self-taught, team spirit
Our Offer
- A permanent contract
- Work on a challenging project inside a young and dynamic team
- A competitive salary combined with extra-legal benefits, including a mobility budget with the option to choose between a company car and/or reimbursement for sustainable transport, and even, under certain conditions, reimbursement of your mortgage or rent.
- Access to our training platform
- Enjoy access to the Benefits@Work platform and its exclusive offers.
- A 13th-month bonus that can be flexibly allocated to a range of benefits
- Homeworking facilities according to client’s policy
Other offers great for you!
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