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Senior Java Backend Engineer (m/f)

ARHS Group Part of AccentureBelvaux, Esch-sur-Alzette🇱🇺LuxembourgPosted 22 Oct 2026

Quick Overview

Seniority
Mid Senior
Employment type
Full Time
Work mode
On Site
Location
Belvaux, Esch-sur-Alzette, Luxembourg
DockerSpringSpring BootGitOAuthHibernateJUnitJavaKafkaTestNGRESTSOAPAzureReactJavaScriptCI/CDAzure DevOpsMavenMockito

Job Description

ARHS Group, part of Accenture, is looking for a Senior Java Backend Engineer to join one of our client teams in Luxembourg within a European institutional environment.

In this role, you will contribute to the development and maintenance of Java-based applications and web portals using Spring Boot. You will work closely with technical and functional teams to deliver reliable backend solutions deployed across on-premises and cloud environments.

THE WORK:

  • Develop, maintain, test, and deploy Java and Spring Boot applications, web portals, components, and libraries.

  • Design and implement backend services and integrations using REST and SOAP web services.

  • Collaborate with team leads, technical leads, business analysts, developers, and testers to understand requirements and ensure consistency across solutions.

  • Contribute to automated testing and continuous integration and deployment processes.

  • Deploy and monitor applications in on-premises and cloud-based containerized environments.

Onsite at client site: This role requires an onsite presence with our clients and partners to support project delivery and strengthen collaboration.

Our roles require in-person time to encourage collaboration, learning, and relationship-building with clients, colleagues, and communities. As an employer, we will be as flexible as possible to support your specific work/life needs.

HERE'S WHAT YOU'LL NEED:

  • Strong experience in Java 17, preferably Java 21 or higher.

  • Solid knowledge of Spring Framework 6.x and Spring Boot 3.x, or higher versions.

  • Experience with JPA / Hibernate.

  • Knowledge of REST and SOAP web services and asynchronous communication using Kafka.

  • Experience with unit testing frameworks such as JUnit or TestNG, and mocking frameworks such as Mockito.

  • Experience with Maven, Git, CI/CD pipelines (preferably Azure DevOps), and Docker.

  • Familiarity with cloud environments, preferably Microsoft Azure.

  • Knowledge of authentication and authorization using OIDC / OAuth.

  • Ability to collaborate effectively with technical and functional teams.

BONUS POINTS IF YOU HAVE:

  • Experience in full-stack web development using a JavaScript framework, preferably React.

As part of our security and compliance procedures, candidates will be required to undergo a criminal background check prior to employment.

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