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Senior Java Developer (m/f)

HybrideBanque & Finance

ARHS GroupLuxembourgPubliée le 2 octobre 2026ESN · statut freelance à confirmerVoir l'annonce sur le site de l'entreprise

≈ 550 – 800 €/jS'inscrire pour postuler

À propos de cette mission

ARHS Group, part of Accenture, is looking for a Senior Java Developer to join one of our client teams in Luxembourg within the banking sector.

You will work on business-critical applications where software quality, performance, security, and reliability are key. Alongside hands-on Java development, you will contribute to the modernization of existing solutions, investigate complex technical issues, and help build a robust foundation for new projects.

Please note that fluency in French is mandatory for this position.

Responsibilities

  • Develop and maintain robust backend solutions using Java 17+ and the Spring ecosystem.
  • Contribute to application upgrades and technology modernization, addressing technical debt and obsolescence.
  • Investigate complex technical issues using logs and monitoring tools, perform root cause analysis, and improve application resilience.
  • Apply Security by Design principles, including authentication, authorization, secrets management, and data protection.
  • Identify and address application vulnerabilities, including OWASP-related risks and dependency vulnerabilities.
  • Improve application performance, code quality, error handling, and observability.
  • Contribute to modernization of existing services and the development of new solutions, ensuring smooth integration with web and mobile applications.
  • Maintain technical documentation and automate testing to support reliable and stable production releases.

Required profile

  • 5+ years of experience in Java development.
  • Strong hands-on experience with Java 17+, Spring Boot, and Spring Security.
  • Strong analytical and troubleshooting skills, including experience investigating logs and monitoring data to identify root causes.
  • Good knowledge of MS SQL.
  • Experience with OpenShift and GitLab CI.
  • Strong understanding of software testing, application security, and OWASP best practices.
  • Experience with observability tools and technologies such as OpenTelemetry and/or the ELK Stack.
  • Basic knowledge of Angular and an understanding of mobile environments such as iOS, Android, and Capacitor.
  • Strong focus on code quality, performance, reliability, and maintainability.
  • Fluency in French is mandatory.

BONUS POINTS IF YOU HAVE:

  • Experience working in the banking or financial services sector.
  • Experience with application modernization or large-scale technical upgrade projects.
  • Experience working with business-critical, high-availability applications.

Conditions

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.

Informations clés

LocalisationLuxembourg
TélétravailHybride
TJM estimé≈ 550 – 800 €/j
SecteurBanque & Finance

Fourchette estimée par notre IA à partir de l’annonce et des tarifs freelance publiés au Luxembourg : l’entreprise n’a pas publié de tarif. À confirmer lors de l’échange. Cette société de services n’a pas précisé le statut ; les ESN acceptent le plus souvent des freelances. Postulez en 1 clic, nous vérifions avec elle.

Candidature sur le site d'origine

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