Senior QA Engineer

About the role

adjoe is looking for a Senior QA Engineer to join the User Experience team that powers its programmatic in‑app advertising platform. You will ensure the stability and performance of native SDKs running on millions of devices and the analytics tools that drive billions of daily predictions.

Key responsibilities

• Design and execute end‑to‑end test strategies, including regression, smoke and post‑release validation.
• Perform hands‑on mobile testing of Kotlin (Android) and Swift (iOS) SDKs within publisher apps.
• Investigate backend services using tools such as Kreya, k9s, Kibana and Grafana.
• Collaborate closely with engineers to discuss feature requirements and provide product insights.
• Maintain and expand automated test suites with Appium and Playwright while also conducting manual testing.
• Monitor system health on AWS, Kubernetes and Docker environments and validate messaging pipelines (Kafka, SQS).

Required profile

• 3+ years of QA experience with a focus on mobile applications.
• Strong understanding of full‑stack testing, from SDK behavior on devices to backend services.
• Proficiency in reading and writing technical documentation.
• Ability to analyze bugs deeply and understand root causes.
• Comfort working in a fast‑paced, cross‑functional environment.

Required skills

• Kotlin
• Swift
• Kreya
• k9s
• Kibana
• Grafana
• AWS
• Kubernetes
• Docker
• Kafka
• SQS
• Appium
• Playwright

What we offer

• Opportunity to work on high‑impact adtech products used by millions.
• Relocation support to Hamburg, Germany.
• Global talent pool with remote collaboration possibilities.