Senior Mobile QA Engineer

New York, New York
IDj-14696
Job TypeDirect Hire
Compensation$150000 - $160000 / yr

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.
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This is a greenfield opportunity - we're building a new mobile app and need someone who can own the QA function from the ground up.

8+ years QA experience with 5+ in mobile

Strong Appium experience

Native mobile tools: XCUITest, Espresso

Playwright experience is a plus 

React Native experience is a plus

Someone who's built mobile automation frameworks from scratch, not just inherited them

Must value both manual testing AND automation (not automation-only) TS/JS

Eastern or Central time zone preferred

 

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