Senior QA Engineer (Native Apps) at Alex Staff Agency in Poland, PL

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.

- 5+ years in QA, with a strong focus on Native Mobile applications.

- Strong understanding of HTTP, REST API, JSON, and microservices.

- Proficiency with sniffing tools (Charles/Fiddler) and mobile debugging (ADB, Logcat).

- Experience with any automation stack and a willingness to work with Ruby.

- Familiarity with Linux command line and Docker.

- Upper-Intermediate English or higher

- Join a team where the average engineer tenure is 5+ years.

• Work on a product that impacts millions of students and educators.

• Access to modern tools and a highly technical engineering culture.

- Budget up to $3,500 per month.