Senior QA Engineer (Native Apps)

We are looking for a Senior QA Engineer to join a stable American EdTech corporation that has been a market leader since the 1990s. You will be responsible for ensuring the quality of high-traffic native applications (iOS, Android, and Desktop) used by millions of users worldwide. We need a fundamental engineer who understands client-server architecture, can dive deep into microservices, and isn't afraid to analyze logs to find the root cause of an issue. Key Details: • Long-term B2B contract with a US-based entity. • 100% Remote (GMT 0 - GMT+2 zone). • Russian/Ukrainian for internal communication; English for documentation and syncs with the US office. • 70% Manual / 30% Automation.

Responsibilities• Perform end-to-end testing of native iOS, Android, and Desktop applications. • Validate complex client-server interactions, including data synchronization and offline modes. • Conduct deep-dive debugging using Charles Proxy, Xcode, Android Studio, and Linux CLI. • Analyze backend logs (Kibana, Grafana) to investigate distributed system issues. • Maintain and extend the existing automation framework using Ruby and RSpec. • Collaborate closely with US-based product teams and local developers in an Agile environment.