First seen by Alion on Oct 13, 2026.
We are seeking a highly skilled Senior Full Stack Developer (Java & Angular focus) to join a dynamic, multicultural project supporting critical public services.
Missions
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Design, develop, test, and deploy resilient web applications, portals, reusable components, and enterprise libraries using Java 17+ / Spring Boot 3+ on the backend, alongside modern front-end frameworks (Angular).
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Partner closely with Technical Leads, Business Analysts, QA Testers, and architectural boards to analyze requirements, refine technical specs, and ensure end-to-end architectural coherence.
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Deploy, manage, and monitor applications across on-premises environments and modern cloud container infrastructure.
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Guarantee application quality and security through automated unit testing, integration testing, code reviews, and adherence to institutional security protocols (OIDC/OAuth2).
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Modernize data flows and cross-system communication using REST/SOAP APIs and distributed event streaming.
Profile
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Deep proficiency in Java 17 (or Java 21+) and core ecosystem frameworks, including Spring Framework 6.x, Spring Boot 3.x, and JPA / Hibernate.
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Solid working experience with modern JavaScript enterprise frameworks, with a primary focus on Angular.
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Strong hands-on knowledge of Web Services (RESTful APIs, SOAP) and asynchronous event-driven messaging using Apache Kafka.
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Proven track record with JUnit / TestNG and mocking libraries like Mockito.
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DevOps & infrastructure :
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Build & Versioning Tools: Maven, GIT.
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CI/CD & Cloud Pipelines: Azure DevOps or equivalent.
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Containerization & Cloud Deployment: Docker and cloud platforms (preferably Microsoft Azure).
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Solid understanding of enterprise authentication and authorization standards.
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Outstanding communication skills, ability to operate in complex multi-stakeholder environments, and fluent professional command of English.
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Practical experience with MicroServices integration frameworks.
Our offer
- Working in a Great Place to Work based in Luxembourg
- Attractive salary and pretty cool benefits (meal vouchers, mobile subscription...)
- Develop your skills and ideas over a coffee, a beer or a pizza during our Neo'vations
- Evolve within a strong company culture, you'll join us for the opportunity and you'll stay because we're super cool (well according to 98% of our employees NEOFACTO Annual Survey 2024)
- Between afterworks, innovative workshops and ski weekends, there's never a dull moment when you're part of the Neo'Squad
Recruitment process:
- The pre-qualification interview with our Recruitment Manager
- Technical tests
- Receipt of our salary proposal / exclusivity agreement
- Proposal of your application to the client
- Interview at the client's premises, which can be conducted either by video or in person
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