IT tester including session-based testing for Android, REST API, E2E, OpenSearch, FCM, MQTT (f/m/d)

Mandatory criteria M1: Proven experience in session-based testing on Android interfaces, both charter-based and free exploratory – evidenced by years of experience – Intermediate (> 3 years of experience) M2: Experience in testing mobile applications in the context of traveler information – evidenced by years of experience – Intermediate (> 3 years of experience) M3: Experience in testing push notifications (FCM) and MQTT-based communication (e.g., Eclipse Amlen) – evidenced by years of experience – Intermediate (> 3 years of experience) M4: Experience in log analysis with OpenSearch for structured error analysis in distributed mobile application systems – evidenced by years of experience – Intermediate (> 3 years of experience) M5: Experience in validating REST API interfaces using JSON and XML (e.g., with Postman or comparable tools) – evidenced by years of experience – Intermediate (> 3 years of experience) Desired qualifications: Experience in communication and coordination with interface partners and development teams – evidenced by years of experience – Intermediate (> 3 years of experience); Experience in AI-supported testing, e.g., with GitHub Copilot, Kiro, or Claude – evidenced by years of experience – Junior (<= 3 years of experience); Experience in integrating automated tests into CI/CD pipelines (e.g., GitLab CI, Gradle) – evidenced by years of experience – Intermediate (> 3 years of experience); Experience in test data management, including creation, maintenance, and client-specific isolation of test data – evidenced by years of experience – Intermediate (> 3 years of experience)