Senior Java Developer – French Speaking (m/f)

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

ARHS Group, part of Accenture, is looking for experienced Senior Java Developers with French language proficiency to join our client teams in Luxembourg, working on various digital transformation projects within the Luxembourgish public sector .

You will contribute to the development and modernization of business-critical applications used by Luxembourg public institutions. Working in collaborative technical teams, you will design, develop, and improve Java-based solutions, contribute to architectural decisions, and help deliver reliable and maintainable applications.

THE WORK

• Design, develop, and maintain Java applications using Spring Boot and the Spring Framework .
• Build and integrate REST APIs , backend services, and microservices.
• Contribute to technical design, application architecture, and the modernization of existing systems.
• Work with relational databases, including SQL queries, data modelling, and object-relational mapping (ORM).
• Write clean, maintainable, and well-tested code following software development best practices.
• Participate in code reviews, troubleshooting, debugging, and performance optimization.
• Contribute to automated testing, continuous integration, and deployment processes.
• Collaborate with developers, architects, business analysts, and other stakeholders throughout the development lifecycle.
• Participate in Agile development activities and contribute to the continuous improvement of applications and development practices.
• Prepare and maintain relevant technical documentation.

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

• Fluency in French is mandatory , both written and spoken.
• Minimum 5 years of professional experience in Java development , preferably working on complex enterprise applications.
• Strong hands-on experience with Java, Spring Boot, and the Spring Framework .
• Solid knowledge of REST APIs, microservices, and backend application development .
• Good understanding of object-oriented programming, software design principles, and application architecture.
• Experience with SQL, relational databases, and ORM frameworks , such as Hibernate or JPA.
• Experience with Git, Maven , and continuous integration/continuous deployment (CI/CD) practices.
• Familiarity with automated testing and code quality practices.
• Ability to analyze technical requirements, troubleshoot issues, and propose effective solutions.
• Strong communication skills and the ability to collaborate within multidisciplinary teams.

BONUS POINTS IF YOU HAVE

• Experience with Docker, Kubernetes , or containerized application environments.
• Knowledge of messaging and event-driven technologies, such as Kafka .
• Experience with frontend technologies, particularly Angular .
• Familiarity with cloud platforms and modern deployment environments.
• Previous experience working on public sector projects or large-scale digital transformation initiatives.