Senior Java Software Engineer

SII Belgium is seeking a highly motivated and ambitious Java Developer to join our team. In this role, you will be responsible for designing and developing software applications, as well as maintaining and improving existing systems. You would join various teams working in AGILE mode for projects in the Defense, Energy, Banking or Telecom sectors. SII is a...

Senior .Net and/or Python Software Engineer Job Overview: Develop and architect real-time software systems that balance electrical grid assets by integrating renewable and storage resources with forecasting and optimization tools." Key Responsibilities: Design system architectures, including APIs, services, and front-end/back-end interactions Provide...

Job role- Java Developer Location Brusseles, Belgium. Job Description: Java – Java 8, Spring MVC, Springboot, Hibernate, ORM, Java frameworks, REST/JSON, JSP, Servlet, Java Beans, JDBC), EJB-Stateless, JMS, SQL, JUNIT, MOCKITO, REST and SOAP – should be an expert · CI/CD – Jenkins, Maven, Nolio, Sonar, Jdepend, Silenium/ fortify, TDD/BDD usage,...

We're looking for an experienced Full-Stack Developer (Java + React) to join a major organisation in the financial services industry in Belgium. You'll work on a range of impactful initiatives - building scalable services, modernising customer-facing applications, and contributing to a high-performing engineering environment that supports innovation across...

NATURE OF TASKS Development of back-end website applications. Integration of user-facing elements developed by a front-end developer with server side logic. Implement core business logic. Creation of servers and databases for functionality. Design and implementation of data storage solutions. Understanding and implementation of security and data protection....

We are looking for a number of Java Developers for our Brussels based client, on a freelance basis for an initial 9 month period. Start Date: February/March End Date: 31.12.2026 (extensions planned) Rate: €500 per day Location: Brussels Time allocation: 40 hours per week Hybrid: 3 days per week onsite, 2 remote. Languages: English and French or Dutch...

Our client, a leading name in the technology sector, is looking for a Senior Software Engineer to join their high-performing engineering team. This role offers the chance to contribute to innovative, end-to-end product development within a forward-thinking environment and work on exciting projects within the blockchain space. Ideal candidates will have a...

Job Title: Java Cloud Architect Language: English Location: Brussels, Belgium Duration: Long Term Hybrid opportunity: 2 days on-site per week Job description: As a Java Cloud Architect, you will: Design scalable high-level architectures (HLA) and blueprints aligned with enterprise frameworks like TOGAF. Lead the transition from monolithic systems to...

Details Job type Regular Description We are looking for three experienced Java architects who will work within our development teams who will take charge of missions entrusted to us by customers. We expect candidates to not only be highly technically competent, but also to have proven experience in managing a group of Java developers in the definition and...

Software Engineer – Up to €80K + Equity – Python, PostgreSQL, Kubernetes We're working with a rapidly scaling technology company in the sustainability space that's building a data-driven platform to help energy organisations operate more efficiently and reduce their environmental impact. Following a recent funding round, the company is expanding its...