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Application Development

Fujitsu | Luxembourg, Belgium | Posted June 03, 2026

Position Overview

MY MISSION

As a Senior Backend Java Engineer, your mission will be to design, implement and maintain robust backend services within a modern microservices architecture, while ensuring high quality, security and compliance with architectural standards.

  • Designing and implementing RESTful microservices using Java (LTS) and Quarkus, in line with Twelve‑Factor App principles.

  • Developing secure, scalable and resilient backend services handling complex business processes (registrations, VAT declarations, validations, workflows, batch processing, notifications and asynchronous treatments).

  • Implementing backend components strictly based on functional specifications provided by business analysts (APIs, data models, business rules, validations and RFC 9457 error cases), while ensuring technical consistency and robustness.

  • Collaborating closely with the internal architect to ensure full alignment with defined architectural guid...

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