Senior Java Developer | Informatiker (m/w/d)

Job Summary

This role seeks a Senior Java Developer, hired through DB Zeitarbeit GmbH for deployment within DB Fernverkehr AG in Frankfurt. The core responsibility involves the end-to-end development of backend microservices within a modern cloud environment. The developer will focus on designing and implementing rule- and data-based booking modules, ensuring they integrate seamlessly as service-oriented parts of a large-scale system. A crucial aspect of this position is maintaining the highest quality standards regarding security, scalability, and performance. You will champion quality assurance by implementing a test-driven development approach, utilizing comprehensive testing strategies, including performance and load tests. Candidates must possess a degree in Informatics or equivalent professional experience, coupled with at least three years of experience as a Lead Developer in complex IT environments. Proficiency in Java EE, Microservices architecture, DevOps practices, and specific tools like Docker and Jenkins is mandatory. Native-level German skills are essential for success in this influential role.