Senior Full Stack Java Developer – Traffic Management Systems

Our client, a leading organization in the transport and infrastructure sector, is looking for a Senior Full Stack Developer to manage business-critical applications. The role focuses on developing scalable Java solutions for infrastructure management and traffic planning within a large-scale Agile framework. Responsibilities Translate functional requirements into robust technical solutions. Develop and implement scalable Java-based systems for mission-critical operations. Optimize and maintain existing applications within a complex IT environment. Integrate automated testing into CI/CD pipelines to ensure software quality. Provide technical documentation and architectural guidance for ongoing projects. Mentor junior team members and foster a culture of knowledge sharing. Support system availability by participating in a 24/7 standby rotation. Requirements 8+ years backend development with Java 21, Spring Framework, Hibernate, and JPA. 8+ years data management using SQL, Oracle, H2, XSD, and XML. 8+ years software quality and testing with TDD, JUnit, Mockito, Selenium, and JMeter. 8+ years implementing CI/CD pipelines using Git, Jenkins, and Artifactory. 8+ years experience in Agile Scrum environments applying Clean Code and SOLID principles. 5+ years architectural design including Kafka, Domain Driven Design (DDD), and Microservices. 1+ years with LeSS, DevOps, OpenShift, Hexagonal Architecture, and Angular 19+. 1+ years using Hazelcast, WebSockets, and Miro. You are fluent in English with C2 level in French or Dutch. Nice to Haves Willingness to participate in a 24/7 standby rotation. Offer Start date: ASAP Work regime: Full-time Location: Brussels Contract: open to both permanent employees and freelancers.