Senior Java Developer
Confirmed on the employer's own hiring board on Nov 4, 2026. First seen by Alion on Nov 4, 2026. Inetum scores B on the Alion truth index.
Inetum is a European leader supporting organizations as they navigate continuous technological change.
With deep industry expertise, a strong innovation culture, and a scalable international model, we help clients transform their operations and generate sustainable impact across business and society.
Guided by European values, we empower local businesses to create positive impact and unlock society’s full potential. This vision drives us to deliver on our promises, attract the best talent, and turn uncertainty into opportunity, building a future where technology unleashes the possibilities within us all.
Are you an experienced Java Developer looking for challenging enterprise projects where you can make a real impact?
At Inetum Belgium, we are looking for a Senior Java Developer with strong expertise in Java, Spring Boot, Microservices, REST APIs, Cloud technologies (Azure/AWS), and modern software engineering practices.
You will work on large-scale digital transformation projects, helping leading organizations design, develop and maintain scalable enterprise applications. Together with architects, analysts, developers and business stakeholders, you will contribute to innovative solutions that deliver real business value.
Forget about conventional communication styles, the main language we speak is Java. If you are passionate about backend development, cloud-native architectures, software craftsmanship and continuous learning, you might be the next Java expert Inetum Belgium is looking for.
As a Medior - Senior Java Developer, you will:
- Develop, maintain and improve enterprise-grade Java applications.
- Design and implement scalable backend solutions using Java and the Spring ecosystem.
- Build and maintain RESTful APIs and integration services.
- Contribute to microservices and event-driven architectures.
- Collaborate with architects, analysts and development teams on complex cross-project initiatives.
- Participate actively in Agile and Scrum ceremonies.
- Identify opportunities for technical improvements and software optimization.
- Take ownership of software quality through unit testing, integration testing and code reviews.
- Ensure the delivery of well-designed, maintainable, testable and efficient code.
- Support and coach junior developers when needed.
- Contribute to development standards, best practices and technical documentation.
Required
- Minimum 5 years of hands-on experience in Java Development, with expertise in backend and/or full stack application development.
- Proven experience designing, developing and maintaining enterprise-scale software solutions.
- Strong analytical and problem-solving skills.
- Experience working in Agile development environments.
- Ability to communicate effectively with both technical and non-technical stakeholders.
Technical Skills & Experience
- Java (Java 8/11/17+)
- Spring Boot, Spring MVC, Spring Data & Spring Security
- REST APIs, SOAP, XML & JSON Integrations
- Microservices & Event-Driven Architectures
- Hibernate & JPA
- Maven & Gradle
- Azure and/or AWS
- Enterprise Application Servers (JBoss, WildFly, WebSphere, Oracle Middleware)
- Tomcat and similar runtimes
- CI/CD & DevOps Practices
- Automated Testing & Software Quality
- Agile & Scrum Methodologies
- AI-Assisted Development (GitHub Copilot, Microsoft Copilot)
- Fluent English
- Professional working proficiency in Dutch and/or French
What We Offer
- A competitive salary package aligned with your experience, expertise and impact.
- Company car with fuel/charging card or the option to choose a mobility budget.
- 32 days of annual leave to help you maintain a healthy work-life balance.
- Group insurance and hospitalization insurance for added peace of mind.
- Flexible working arrangements, hybrid working opportunities and access to satellite offices.
- Extensive learning and development opportunities, including training programs, technical workshops and certification tracks.
- The opportunity to continuously grow your expertise in Java, Cloud, AI and modern software engineering practices.
- Knowledge-sharing communities, coaching and collaboration with experienced experts across different technology domains.
- Challenging enterprise and digital transformation projects for leading organizations in Belgium.
- A people-focused culture where innovation, collaboration and continuous improvement are encouraged every day.
Interested? Ready to take the next step in your career? Apply today and discover how you can contribute to innovative projects while growing your expertise in Java, Cloud and modern software development. Interested in a freelance contract instead? Feel free to reach out and let's explore the opportunities together.