Middle QA Engineer – Mobile

• Own features end to end: review PRDs, design test coverage and publish feature documentation for the whole QA team
• Perform functional, smoke, sanity, and regression testing of mobile apps on real devices
• Test the backend manually via REST APIs across multiple services and validate client–backend integrations
• Validate business logic, pricing, feature flags, and user data at the database level in MongoDB
• Analyze client–server traffic with proxy tools to identify whether bugs are client- or backend-side
• Test in-app purchases, attribution, personalization flows, and A/B experiments affecting revenue
• Validate analytics events and tracking
• Set up test conditions via the admin panel and JSON configs
• Create and maintain test cases, checklists, bug reports, and test reports
• Use and grow the AI-based toolset for test-case generation, checklists, and PRD analysis
• Work within Scrum and continuously improve testing speed and quality

• 2+ years of experience in manual testing, including backend testing with API tools and databases
• Hands-on experience testing iOS/Android apps on real devices
• Experience with proxy debugging tools: Charles, Proxyman or Fiddler
• Strong knowledge of test design techniques and requirements analysis
• Experience testing in-app purchases
• Experience setting up test conditions via JSON configs or admin panels
• Experience with test management systems such as Qase, TestRail or similar
• Experience using Claude or other AI tools for testing and creating test documentation
• Experience working in fast release cycles
• English at B1 level or higher
• Structured thinking, eagerness to learn and clear communication
• Result-oriented mindset, team spirit and flexibility
• Experience with MongoDB Compass, analytics testing, A/B testing, marketing testing, localization testing, and TestFlight are a plus

• 20 paid days off
• 15 days off due to sickness
• 6 additional days off for family events
• Up to 10 additional days off for public holidays
• 100% medical insurance coverage
• Sports and equipment reimbursement
• Team building events, corporate gifts, and stylish merch
• Financial and legal support
• Position retention and support for those who join the Armed Forces of Ukraine
• Participation in social initiatives supporting Ukraine
• Flexible hours of business activity
• Modern equipment or depreciation of your own tools
• Performance-oriented reviews and Individual Development Plans (IDPs)
• Reimbursement for professional courses and English classes
• Corporate library, book club, and knowledge-sharing events
• Investment in modern AI tools and AI skills development