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

TL;DR

Mid-Level / Senior Java Developer (m/f) (Java/Spring Boot): Design, build, test, and maintain backend applications with an accent on microservices, REST APIs, and production-grade reliability. Focus on scalable architecture, secure integrations (databases, messaging, authentication), and improving performance, observability, and CI/CD automation.

Location: Luxembourg

Company

ARHS Group (part of Accenture) delivers complex public sector IT projects, including systems integration, analytics, and software development.

What you will do

• Design, build, test, and maintain backend applications using Java and Spring / Spring Boot.
• Develop scalable microservices and REST APIs aligned with modern architectural standards.
• Integrate systems with databases, messaging platforms, and authentication services following security and compliance guidelines.
• Collaborate with developers, architects, business analysts, QA, and DevOps to deliver end-to-end features.
• Troubleshoot production issues and improve performance, reliability, and observability.
• Support CI/CD processes and automation, maintain technical documentation, and participate in code reviews.

Requirements

• 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 with both relational and non-relational databases (e.g., PostgreSQL, MongoDB).
• Practical knowledge of Kafka or Kubernetes (strong proficiency in at least one is required).
• Fluency in English (written and spoken).

Culture & Benefits

• In-person time is required to support collaboration, learning, and relationship-building.
• Flexible approach to work-life needs.
• Collaborative, international environment with Agile ways of working.