Backend Developer | Backend Developer

activjob GmbH

Frankfurt am Main, Hessen, Deutschland
Published Sep 5, 2025
Full-time
Permanent

Job Summary

This role involves developing and enhancing a high-performance booking and ticketing platform for a valued partner of Deutsche Bahn. The successful candidate will be responsible for integrating complex booking and payment processes into a modern microservice architecture, ensuring top-tier quality in security, performance, and scalability. A key focus will be on transitioning to a cloud architecture, implementing CI/CD and test automation, and providing coaching and consultation to technical teams. This position offers an unlimited employment contract, competitive compensation, and flexible working hours, making it an attractive opportunity for experienced backend developers looking to contribute to large-scale, impactful projects in a cloud-native environment.

Required Skills

Education

Master's degree in Computer Science, Business Informatics, or equivalent

Experience

  • At least 3 years as a Lead Developer in complex IT projects
  • At least 3 years with Java EE, GitLab, Eclipse, Docker, Jenkins, Maven, Gradle, JSON
  • At least 3 years with Microservices, Software-System-Design and DevOps
  • 3 years in Test Automation, Continuous Integration / Continuous Deployment
  • 3 years in Cloud environments (e.g., AWS) and Cloud architecture
  • Experience with modern databases in a cloud environment (e.g., PostgreSQL, S3)
  • Experience with asynchronous processing and queueing mechanisms (e.g., ActiveMQ)
  • Proficient use of Jira and Confluence
  • Comprehensive expertise in software architecture, testing, deployment, and maintainability

Languages

German (Fluent)

Additional

  • Not specified