Senior Java Developer
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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. xphnsxz 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.
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