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# Senior Java Backend Developer | Düsseldorf

- **Company:** ADVERGY GmbH
- **Location:** Düsseldorf, Germany (Remote available)
- **Experience:** Expert
- **Salary:** €55,000.0 - €75,000.0
- **Contract:** Permanent contract
- **Skills:** Java (Programming Language), Application Programming Interfaces (APIs), Java Persistence API, Openid Connect, Backend, Microservices
- **Published:** August 27, 2026
- **Apply:** https://www.xing.com/jobs/duesseldorf-senior-java-backend-developer-duesseldorf-157438906

## About the Role

* Mehrjährige Erfahrung in der Java-Backend-Entwicklung
 * Sehr gute Kenntnisse in Java (mind. Version 21), Jakarta EE, MicroProfile, JPA
 * Erfahrung mit Security-Themen (z. B. OpenID Connect, TLS)

## Description

* Full-timeEmployment type: Full-time
 * €55,000 - €75,000 (employer salary)
 * On-site
 * Be an early applicant, * Entwicklung und Weiterentwicklung moderner Backend-Systeme auf Basis von Java (aktuell Java 21)
 * Konzeption und Implementierung anspruchsvoller Anwendungen im Gesundheitsumfeld
 * Mitarbeit an der Modernisierung bestehender Systeme sowie Aufbau neuer Architekturen
 * Entwicklung von APIs und Services (z. B. im Kontext von Microservices)


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- [Keeping applications secure by evolving OAuth 2.0 and OpenID Connect](https://www.wearedevelopers.com/videos/100152-keeping-applications-secure-by-evolving-oauth-2-0-and-openid-connect)
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