Backend Developer | Backend Developer

activjob GmbH

Frankfurt am Main, Hessen, Deutschland

Published Sep 9, 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 focus on integrating complex booking and payment processes into a modern microservice architecture, ensuring top-tier quality in security, performance, and scalability. A key aspect of the role is the transition to a cloud architecture, incorporating CI/CD and test automation, while also providing coaching and consultation to technical teams. This position offers an indefinite contract, competitive salary, and flexible working hours, making it an attractive opportunity for an experienced developer passionate about robust, scalable backend solutions.

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
At least 3 years in Test Automation, Continuous Integration / Continuous Deployment
At least 3 years in Cloud Environments (e.g., AWS) and Cloud Architecture
Professional experience with modern databases in a cloud environment (e.g., PostgreSQL, S3)
Professional experience with asynchronous processing and queueing mechanisms (e.g., ActiveMQ)
Professional experience with Jira and Confluence

Languages

German (Fluent)

Additional

Not specified