senior java developer

SEIDOR in Brussels is seeking a Senior Java Developer to design, build and test back-end components using the Spring ecosystem. You will implement REST and event-driven APIs, ensure robust security with OAuth 2.0 / OIDC / SAML, and contribute to CI/CD pipelines in a collaborative environment. You will work across code reviews, pair programming,...

ALTEN in Belgium is hiring a Senior Java Software Developer to drive application modernization in Brussels. You will upgrade Java apps from legacy versions to modern runtimes, refactor code, and resolve migration challenges across teams. The role requires deep Java expertise (7–21+), Spring, Tomcat and containerization with OpenShift/Kubernetes....

RMM Consulting Group seeks an experienced Full-Stack Developer (Java – React) to design and deliver end-to-end software within an Agile squad responsible for digital banking solutions for enterprise customers. You will develop backend services with Java/Spring and frontend with React, integrating external APIs and ensuring performance, security, and...

Xintas seeks an experienced Java/Azure Enterprise Integration Developer to design, build and operate scalable integrations across Salesforce and Azure. You will implement secure, reliable services, REST APIs and event-driven patterns within an enterprise cloud environment. The role emphasizes production readiness, observability and resilience, with focus on...

EUROPEAN DYNAMICS Group is seeking an Application Architect (Java) fluent in English to join the Brussels team. The role involves developing and maintaining software, designing component architecture for a CMS, and collaborating with client IT teams on site in Brussels, Belgium. The ideal candidate has a Bachelor's in IT with 11+ years' experience, strong...

ENTICO zoekt een ervaren Java/Azure Enterprise Integration Developer die veilige en betrouwbare services bouwt die Salesforce koppelen aan ons bredere applicatielandschap. Je developer skills richten zich op Java 17+, Spring Boot en REST/event-driven integraties. Je neemt end-to-end verantwoordelijkheid: analyse tot productieondersteuning, met aandacht voor...

Devoteam Creative Tech in Belgium seeks a Senior Java Developer to design, build and maintain high-performance enterprise applications and modern back-end services. You will work with front-end frameworks and actively integrate AI tools to accelerate development, improve code quality and deliver intelligent features. The role emphasizes AI augmentation,...

Wat houdt deze vacature in? Binnen Digital Channels werk je aan toepassingen die rechtstreeks impact hebben op de digitale ervaring van KBC-klanten. Als Senior Java Software Engineer versterk je in eerste instantie het team Security, Logon & Enrollment, dat instaat voor veilige toegang tot onze digitale toepassingen. Je bouwt mee aan oplossingen voor...

Everience Benelux is seeking a Senior Java Developer to strengthen the Risk Management team. You will design and deliver high-quality software, mentor developers, and drive technical excellence within a dynamic, international consulting group. Join a Belgium-based platform of about 180 professionals and contribute to scalable Java applications, REST...

Médiane Benelux in Belgium is seeking a Java Software Architect to strengthen its software teams in defense and mission-critical systems. You will design secure, high-performance backend services and contribute to architectural decisions within an Agile, international context. You will work on Spring Boot microservices, REST APIs, Angular frontends, and...

Aubay Belgium seeks an experienced Java Architect to lead the design and implementation of Java-based applications for public services in Brussels. You will analyze business needs, guide development, ensure architectural alignment, and document complex systems for maintainability. Ideal candidates have 10+ years in Java, strong architecture knowledge, and...

Appsierra Group is seeking a Java Architect to lead the design and implementation of comprehensive technical solutions. You will work closely with business and development stakeholders to shape architectures and ensure quality across the stack. You will design architectures, define non-functional requirements and SLOs, and guide teams through full-stack...

About Corilus Corilus is the leading provider of digital solutions for healthcare professionals in Belgium, with over 30 years of experience building software for doctors, pharmacists, nurses, and care coordinators. Today, we serve more than 70,000 healthcare professionals. We are now at an inflection point. Following the acquisition of Sofia Dévelopement...

Fieldside zoekt een Senior Freelance JAVA Backend Engineer in Brussel met remote mogelijkheid, voor een lange termijn opdracht. Je werkt in een cross-functioneel Agile-team aan het bouwen van schaalbare backenddiensten en API’s voor digitale producten. Je hebt 8+ jaar ervaring met Java, API-design, en CI/CD, en bekwaam in cloud-native omgevingen....

Choosing Capgemini means choosing a company where you will be empowered to shape your career in the way you’d like, where you’ll be supported and inspired by a collaborative community of colleagues around the world, and where you’ll be able to reimagine what’s possible. Join us and help the world’s leading organizations unlock the value of...

Smals zoekt een Solution Architect om architecturale, functionele en technische concepten uit te tekenen en te bewaken. Je stelt plannen op, zorgt voor reuse en werkt nauw samen met de Enterprise Architect. Je levert bijdragen aan een strategische ICT-visie en bewaakt IT-governance in projectteams. Je adviseert projectleiders en analisten en fungeert als...

KBC Digital Channels zoekt een Senior Java Software Engineer die Security, Logon & Enrollment versterkt. Je bouwt mee aan authenticatie-, identificatie- en enrollmentsoplossingen die dagelijks door veel klanten worden gebruikt. Je werkt samen met diverse teams en draagt bij aan consistente, betrouwbare ervaringen over meerdere digitale kanalen heen. Je denkt...

Ben jij een ervaren Java Developer die graag verder kijkt dan alleen code? Krijg je energie van het maken van technische keuzes, het bewaken van kwaliteit én het meenemen van andere developers in je verhaal? Dan is deze rol als Java Tech Lead misschien wel jouw volgende uitdaging.Je komt terecht binnen in het Care-programma en je combineert hands-on...

Amon zoekt een ervaren Java Engineer / Architect voor Olympus Mobility, het grootste B2B-mobiliteitsplatform in België. Je werkt aan de backend- motor van de Olympus-app en aan complexe API-architectuur die diensten native ontsluit binnen de KBC-app, met focus op schaalbaarheid en microservices. Je analyseert complexe technische vraagstukken, ontwerpt...

Collaboration Betters the World (CBTW) is seeking a System Architect to shape NIT’s technology roadmap, combining hands-on software engineering with architectural leadership. You'll design scalable systems across microservices, APIs, and cloud platforms. You’ll mentor squads, drive DevOps practices, and promote secure-by-design principles while...