Senior Java Developer
Brussels & Ghent, Belgium
Start Date: May 2026
Overview
We are looking for a Senior Java Developer to design, build, and maintain scalable backend services within a cloud-native environment. You will work on high-impact digital platforms, focusing on secure data handling, performance, and seamless integration across systems.
Key Responsibilities
- Design, develop, and maintain Java-based backend services using Spring Boot
- Build scalable microservices and REST APIs for data integration
- Ensure security, performance, and reliability of applications
- Apply best practices such as TDD, Domain-Driven Design (DDD), and Agile methodologies
- Collaborate with architects and development teams to align with overall architecture
- Contribute to CI/CD pipelines and DevOps practices
- Lead and mentor developers, supporting team growth and technical excellence
- Work with relational databases and optimize data access
Requirements
- Minimum 5 years' experience in Java development (Senior level)
- Strong experience with Spring Framework (Spring Boot, Spring Data, Spring Security)
- Experience with microservices architecture
- Experience with Hibernate, JPA, or SQL
- Knowledge of CI/CD pipelines and DevOps tools
- Experience with Agile methodologies
- Strong coding, testing, and debugging skills
- Dutch language proficiency at C2 level (mandatory)
Nice to Have
- Experience with AWS and Docker
- Knowledge of OAuth2 / OIDC
- Experience with testing tools (JUnit, AssertJ, JMeter)
- Familiarity with SOAP, Postman, or Newman
- Knowledge of mobile application development
- Experience with Node.js or similar technologies
Additional Details
- Full-time role (100%)
- Primarily on-site in Brussels (minimum 2 days/week)
- Contract until July 2027
If you are a skilled Java developer with a passion for building secure and scalable systems, this role offers an opportunity to contribute to impactful digital solutions at scale.
