Senior Manual QA Engineer for Mobile App

TL;DR

Senior Manual QA Engineer for Mobile App: Owning end-to-end QA for a large-scale consumer mobile application on iOS and Android with an accent on test strategy, execution, and defect management. Focus on network-aware testing, API and data validation, and hands-on memory profiling.

Location: Must be based in Central Europe

Company

hirify.global is a company focusing on large-scale consumer mobile applications with millions of active users.

What you will do

• Own end-to-end QA within sprints, including test strategy, scope, effort, and high-quality releases.
• Plan and execute various test cycles, covering feature, integration, regression, and release certification.
• Author clear, reproducible defects with videos, logs, and device metadata, driving root cause and resolution.
• Partner with developers and PMs to clarify requirements, acceptance criteria, risks, and success metrics.
• Perform network-aware testing (e.g., airplane mode, 2G/3G throttling, packet loss) using proxies and emulator/simulator tools.
• Conduct API validation for mobile backends (manual REST verification) and data/analytics validation against tracking specs.
• Collaborate with the automation team on weekly release regression cycles and prioritize automation candidates.
• Lead release-team testathons for major feature launches, tracking findings and publishing results.
• Perform hands-on memory profiling using Xcode Instruments and Android Studio Profiler to detect leaks and analyze heap/allocations.
• Deliver weekly Quality Release Reports to the Release Manager, including coverage, pass rate, defect density, and crash-free users.

Requirements

• 5+ years of hands-on QA for iOS and Android consumer apps (feature, integration, regression, release testing).
• Strong understanding of SDLC and mobile release trains (feature flags, build types, staged rollouts, crash & analytics tooling).
• Clear, proactive communication to align with developers and product on requirements, test plans, and test strategies without supervision.
• Proven end-to-end ownership of sprint QA, including scope, priorities, daily progress, blockers, and timely sign-off.
• Experience testing on real devices and emulators/simulators, ensuring coverage across OS versions, screen sizes, and locales.
• Proficiency with tooling such as Xcode (logs, profiling), Android Studio/ADB, Charles Proxy or Fiddler, and Jira.
• Experience with manual REST API testing (Postman/Insomnia) and a solid grasp of client–server interactions (headers, auth, caching).
• Excellent written and spoken English for crisp test documentation and defect reports.

Nice to have

• Accessibility testing to WCAG 2.1 AA standards (VoiceOver/TalkBack, color/contrast, semantics).
• Experience with IAP/subscriptions, push notifications, deep links, and geo features.
• Familiarity with crash/analytics stacks (Firebase, Datadog, Amplitude, Mixpanel, Sentry, Crashlytics).
• Exposure to mobile automation (XCUITest/Espresso/Maestro) and creating high-value automation backlogs.
• Client-side performance profiling (startup time, memory, jank) and battery/network sensitivity checks.

Culture & Benefits

• Paid Vacation, Sick Days, and Floating Holidays.
• Sport and Insurance Compensation.
• English Classes.
• Charity participation.
• Training Compensation.