Senior Manual QA Engineer Mobile App Europe

Position Overview

Senior Manual QA Engineer for Mobile App — responsible for a large‑scale consumer mobile application with millions of active users. The role focuses on ensuring stability, performance, and a seamless user experience across iOS and Android platforms, covering functional validation, UI/UX consistency, geolocation features, and real‑time interactions.

• Own end-to-end QA within a sprint: create test strategies/plans, define scope & priority, estimate effort, track progress, unblock issues, and ensure on-time, high‑quality releases.
• Plan and execute test cycles across feature, integration, regression, and release certification (Test Flight/Internal App Sharing/production).
• Author clear, reproducible defects with videos, logs, and device metadata; drive root cause and follow-through to resolution.
• Partner with developers & PMs to clarify requirements/acceptance criteria, risks, and success metrics.
• Network‑aware testing (airplane mode, 2G/3G throttling, packet loss) using proxies and emulator/simulator tools.
• Release readiness: build verification, smoke suites, sanity checks; participate in bug triage, go/no‑go, and post‑mortems.
• Automation‑aware: convert high‑priority manual scenarios into actionable automation tickets; collaborate with SDETs on monthly audits and coverage plans.
• Lead release‑team testathons for major feature launches: plan charters, coordinate cross‑functional participants, track findings, and publish results.
• Work closely with the automation team on weekly release regression cycles: align scope, review flaky tests, and prioritize automation candidates from recent escapes.
• Hands‑on memory profiling using Xcode Instruments and Android Studio Profiler; detect leaks/retention, analyze heap/allocations, and file actionable performance bugs with traces.
• Be metrics‑oriented and deliver weekly Quality Release Reports to the Release Manager (coverage & pass rate, defect density/age/SLA, crash‑free users, ANR rate, cold‑start time, flakiness, known risks).

• 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—align with developers and product on requirements, test plans, and test strategies without supervision.
• Proven end‑to‑end ownership of sprint QA (scope/priorities, daily progress, blockers, timely sign‑off).
• Testing on real devices and emulators/simulators; coverage across OS versions, screen sizes, locales, accessibility setups.
• Excellent written/spoken English, crisp test docs and defect reports.

• Xcode (logs, profiling)
• Android Studio/ADB
• Charles Proxy or Fiddler
• Jira
• Postman/Insomnia for manual REST API testing
• Client–server interaction knowledge (headers, auth, caching)
• Accessibility testing to WCAG 2.1 AA (Voice Over/Talk Back, color/contrast, semantics)
• Experience with IAP/subscriptions, push notifications, deep links, 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 backlog
• Client‑side performance profiling (startup time, memory, jank) and battery/network sensitivity checks