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Confidential • United States
Role & seniority: Senior Mobile QA Engineer (8+ years QA, 5+ years mobile QA)
Stack/tools: Appium, Detox (or comparable); Xcode, Android Studio, ADB; CI/CD (GitLab CI, Jenkins, GitHub Actions, Bitrise); real devices, emulators, cloud device farms (BrowserStack, Sauce Labs, Firebase Test Lab); mobile performance tools (Android Profiler, Xcode Instruments)
Design, implement, and maintain automated test suites for iOS and Android; integrate tests into CI/CD
Conduct manual and automated testing of UI/UX, core features, and mobile-specific behaviors; validate performance and stability
Ensure cross-device/OS compatibility; develop test plans, cases, and QA documentation; collaborate with product/design/dev
8+ years QA experience, 5+ years mobile QA (manual + automated)
Proficiency with mobile automation (Appium/Detox or equivalents)
Strong knowledge of mobile architectures, build environments, debugging (Xcode, Android Studio, ADB)
Experience with CI/CD integration, real devices vs emulators vs cloud device farms
Performance profiling and debugging capabilities; solid QA methodologies and test design
Excellent communication; ability to work in fast-paced, iterative settings
Startup experience
Experience improving QA tooling, automation frameworks, testing methodologies
Location & work type: Not specified in the provided text; location and work-type details unavailable
The Senior Mobile QA Engineer plays a key role in ensuring the reliability, performance, and overall quality of mobile applications across both iOS and Android platforms. This role focuses heavily on test automation, mobile‑specific validation, and cross‑device performance analysis. The engineer will collaborate closely with product, design, and development teams in an Agile environment to support the delivery of high‑quality mobile experiences. Key Responsibilities Design, implement, and maintain automated test suites for Android and iOS applications using modern automation frameworks such as Appium or Detox. Integrate mobile test automation into CI/CD pipelines and support continuous delivery workflows. Conduct manual and automated testing, validating UI/UX flows, core functionality, and mobile‑specific behaviors such as gestures, permissions, offline mode, and device state variations. Run performance, load, and stability tests to identify issues related to memory usage, rendering performance, battery impact, and network conditions. Verify compatibility across diverse devices, operating systems, screen sizes, and hardware profiles. Develop and maintain comprehensive test plans, test cases, and QA documentation to support releases. Work closely with engineering, design, and product teams to ensure proper test coverage and alignment with feature requirements. Contribute to the improvement of QA tooling, automation frameworks, and testing methodologies. Qualifications 8+ years of QA experience, including at least 5 years specializing in mobile QA (manual and automated). Proficiency in mobile test automation using Appium, Detox, or comparable tools. Strong understanding of mobile architectures, build tooling, and debugging environments such as Xcode, Android Studio, and ADB. Experience integrating automated mobile tests into CI/CD systems (e.g., GitLab CI, Jenkins, GitHub Actions, Bitrise). Hands‑on experience testing across real devices, emulators, and cloud device platforms (e.g., BrowserStack, Sauce Labs, Firebase Test Lab). Familiarity with mobile performance profiling tools such as Android Profiler, Xcode Instruments, or similar tools. Strong analytical and troubleshooting abilities with a deep understanding of QA practices and test‑design strategies. Excellent communication skills and the ability to work in fast‑paced, iterative environments; startup experience is a plus.