Senior Java Backend Engineer – Remote

SEIDOR, a multinational technology company, invites you to join Brussels-based teams as a Senior Java Developer working fully remotely. You will design, implement and maintain back-end services using Spring, build REST and event-driven integrations, and contribute to secure authentication and deployment pipelines.Requirements include 4+ years in Java...

Freelance JAVA Backend Engineer (senior)Freelance JAVA Backend Engineer (senior)FunctieomschrijvingVoor onze klant zijn we op zoek naar een Java Backend Engineer (senior).De afdeling Digitale Producten is de plaats waar digitale producten vorm krijgen. In nauwe samenwerking met de verschillende merken ontwikkelen wij nieuwe producten; van websites tot social...

SEIDOR in Brussels is seeking a Back-end Developer to join our team working with European Institutions from Brussels, remotely. You will develop backend web applications, design APIs, implement core business logic, and ensure security, performance, and scalable data storage.You will work with Java/JEE, REST and SOAP APIs, PostgreSQL, and modern DevOps tools,...

Expleo Group is seeking an experienced Java backend developer to design, implement, and maintain scalable microservices. You will work with REST APIs, Kafka, and Flink in a distributed data environment, participating in design reviews and CI/CD practices.The role requires strong Java expertise, Spring Boot proficiency, and a background in Agile/Scrum teams,...

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, documentation,...

Nebius is hiring a Senior Backend Software Engineer for the Cloud Monetization Platform, based in Amsterdam or remote. You will help power the commercial foundation of Nebius Cloud, designing distributed backend systems and reliable workflows across multiple microservices.The role requires 5+ years of software experience, strong Python knowledge (or...

KCS IT is seeking a Senior Backend Software Engineer (Mainframe) in Belgium. You will design, develop and maintain backend systems in mainframe environments, work in a hybrid setup (Belgium - 2/3 days per week), and collaborate with IT and business stakeholders across cross-functional teams.English and Dutch communication are essential for our international...

SEIDOR is seeking an Advanced Java Developer to join our Brussels team in a hybrid work setup. You will design, develop and test backend components using the Spring ecosystem, implement REST and event-driven APIs, and contribute to CI/CD pipelines.You will work on authentication, data persistence, and integration with messaging systems, while participating...

SEIDOR in Brussels is seeking an Advanced Java Developer to design, develop and test backend components using the Spring ecosystem. You will implement REST and event-driven APIs, manage persistence layers and integrate with messaging systems to power secure, scalable applications.Join a multinational tech company with a start-up spirit; you will contribute...