Salary
≈ $71k – $205k per year (Estimated)
Location
Hybrid (Luxembourg City, Luxembourg)
Seniority
Senior
First seen by Alion on Oct 13, 2026.
Overview
Company
Impact
Profile match
We deliver innovation. For over 20 years, we've been building and running a strong network of IT experts, capable of providing high quality software services to our customers.
NEOFACTO
WE DELIVER INNOVATION
We are looking for a Senior Java Developer to participate in the projects of a financial institution in Luxembourg
Missions
- Participate in the analysis of technical and functional requirements
- Design, develop, and maintain back-end applications in Java Spring Boot
- Develop and optimize APIs and application services
- Perform unit tests and ensure code quality
- Collaborate with project teams in an agile environment and contribute to technical decisions
Profile
- You have at least a Bachelor Degree in IT
- You have strong professional experience as a software engineer working with Java and modern Spring Boot applications (Java 17; preferably Java 21 or higher)
- You have a solid understanding of modern application architecture, including MicroServices, clean APIs, modular backend design, and frontend-backend integration (React + Spring Boot).
- You have a solid experience in both designing and coding complex applications
- You have some experience with relational databases.
- You have a strong knowledge of REST services, Kafka, and JSON‑based integration patterns.
- You have a strong knowledge of JUnit/TestNG and mocking frameworks such as Mockito.
- You have a good understanding of Agile/Scrum.
- Some experiences in React is an plus
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
- JAO Joint Allocation Office - Java Developer Luxembourg - SSH, SSL/TLS, HTTPS, CI/CD, ITIL
- NSI - Senior Java Developer Luxembourg - RESTful APIs, JVM, Gradle
- NEOFACTO - Integration Engineer Luxembourg - DevOps, CI/CD, TerraForm, Bicep
- NEOFACTO - Software Developer (Java & Angular) Esch-Sur-Alzette - Web Services, RESTful APIs, TestNG
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