ALT2026-0169 - Senior Back-End Engineer

We are looking for a Senior Back-End Developer for a key client based in Luxembourg.

Responsabilities:

• Develop, maintain, test and deploy SpringBoot web portals, applications, components and libraries, using Java and Spring framework.
• Collaborate with team leads, tech leads business analysts, developers and other testers to understand requirements and ensure consistency and coherence of requirements.
• Deploy and monitor applications on-prem and in cloud containerized environment.

Requirements:

• University Degree at a related field
• 10+ years of experience
• Java 17 (preferably 21 or higher)
• Spring Framework 6.x (or higher) & Spring Boot 3.x (or higher)
• JPA / Hibernate
• Web services (REST, SOAP); asynchronous communication using event streaming (Kafka)
• JUnit/TestNG; Mockito or similar mocking framework
• DevOps: Maven, Git, CI/CD pipelines (preferable Azure DevOps), containers (Docker), cloud (preferable Azure)
• Auth/Authz using OIDC/OAuth
• English fluent

Nice to have:

• Experience with integration technologies and micro-services, preferably with Apache Camel (but Spring Integration would be a plus)
• Full stack web development with a JavaScript framework (preferably React)
• Process/workflow engine experience (eg: Temporal)

Location

• Luxembourg (Hybrid: 3 days office – 2 days remote)