Mid-level / Senior Java Developer (m/f)

Location: Luxembourg, Luxembourg, lu

Company Description

Arηs Group, Part of Accenture, specializes in the management of complex public sector IT projects, including systems integration, informatics and analytics, solution implementation and program management. Our team helps lead clients through digital and information systems design, bringing expertise in a variety of areas ranging from software development, data science and security management to machine learning, cloud, and mobile development.

Arηs Group was acquired by Accenture in July 2024.

Job Description

We are expanding our internal development teams and are looking for a Mid-level or Senior Java Developers to join ARHS Group, part of Accenture. This role offers a hands-on opportunity to work on microservice-based platforms using Java and Spring Boot in a collaborative, international environment.

THE WORK:

• Design, build, test, and maintain backend applications using Java and Spring / Spring Boot.
• Develop scalable microservices and REST APIs aligned with modern architectural standards.
• Contribute to technical design discussions and participate in code reviews to maintain high-quality coding practices.
• Integrate systems with databases, messaging platforms, and authentication services, following security and compliance guidelines.
• Collaborate with developers, architects, business analysts, QA, and DevOps teams to deliver end-to-end features.
• Troubleshoot production issues and contribute to improvements in performance, reliability, and observability.
• Support CI/CD processes and automation alongside the DevOps team.
• Maintain clear technical documentation and share knowledge within the team.

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

HERE’S WHAT YOU’LL NEED:

• 4+ years of experience (Mid-level) or 7+ years of experience (Senior) in professional software development.
• Strong hands-on expertise with Java and Spring / Spring Boot.
• Solid experience designing and building RESTful APIs, microservice architectures, and unit/integration testing (JUnit, Testcontainers or similar).
• Experience working with both relational and non-relational databases (e.g., PostgreSQL, MongoDB).
• Practical knowledge of Kafka or Kubernetes (strong proficiency in at least one of these is required).
• Comfortable working in collaborative Agile environments.
• Strong communication skills and a team-oriented mindset.
• Fluency in English (written and spoken).

BONUS POINTS IF YOU HAVE:

• Experience with Angular for basic to intermediate frontend development.
• Experience developing Kubernetes operators or working with advanced Kubernetes features.
• Familiarity with GraphQL (Apollo Federation is a plus).
• Knowledge of Open Policy Agent (OPA) or security policy frameworks.
• Exposure to eventual consistency patterns or distributed system design.
• Experience with Go (Golang) or Node.js backend development.
• Experience with Knative or other serverless/container platforms.