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

Hybrid

ARHS GroupLuxembourgPosted on 2 octobre 2026IT services company · freelance status to confirmView the original ad on the company's website

≈ 500 – 750 €/jSign up to apply

About this mission

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.

Responsibilities

  • 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.

Required profile

  • 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.

Conditions

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.

Key information

LocationLuxembourg
RemoteHybrid
Estimated daily rate≈ 500 – 750 €/j

Range estimated by our AI from the ad and the freelance rates published in Luxembourg: the company did not publish a rate. To be confirmed when you talk. This IT services company did not state the status; such companies usually accept freelancers. Apply in 1 click and we check with them.

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