Senior QA Engineer at adjoe

Hamburg, Germany

on-site · full_time · Visa sponsorship

Apply for this role at adjoe

Responsibilities:
- Own end-to-end QA for mobile SDKs (Android/iOS) and analytics tooling, covering device behaviour and backend integration.
- Develop and execute test strategies: regression, smoke, integration and post-release validation.
- Implement and maintain automated test suites (Appium, Playwright) alongside manual exploratory testing on real devices.
- Validate SDK stability inside third-party apps, performance under load, and correct signal capture for ML and bidding flows.
- Use observability and debugging tools (Kibana, Grafana, Kreya, k9s) to investigate incidents and production issues.
- Collaborate with engineers on root-cause analysis, reproduce issues across services, and contribute to technical documentation.

Requirements:
- 3+ years QA experience with hands-on mobile SDK testing across Kotlin and Swift environments.
- Proven automation experience with Appium, Playwright or similar frameworks.
- Strong knowledge of cloud and infra components (AWS), containers (Docker, Kubernetes), messaging (Kafka, SQS).
- Comfortable with monitoring, logging and service investigation tools; able to triage backend and infra issues.
- Clear communicator who works closely with engineers and product teams and documents findings concisely.