Senior Mobile QA Engineer

Confidential; United States; On-site; USD 100,000 - 130,000; Full time

Job summary

A leading tech company is seeking a Senior Mobile QA Engineer to ensure the quality and performance of mobile applications for iOS and Android. This role emphasizes test automation and cross-device analysis within an Agile environment. The ideal candidate has over 8 years of QA experience, with at least 5 years specializing in mobile QA. Responsibilities include designing automated tests, conducting performance evaluations, and collaborating with engineering and product teams to align testing strategies with feature requirements.

Qualifications

• 8+ years of QA experience with 5+ years in mobile QA.
• Proficiency in mobile test automation using Appium or Detox.
• Strong understanding of mobile architectures and debugging environments.
• Experience integrating mobile tests into CI/CD systems.
• Familiarity with mobile performance profiling tools.

Responsibilities

• Design and maintain automated test suites for mobile applications.
• Integrate mobile test automation into CI/CD workflows.
• Conduct manual and automated testing for UI/UX and functionality.
• Run performance and stability tests across devices.
• Develop and maintain comprehensive QA documentation.

Skills

Mobile test automation

Performance testing

UI/UX validation

Agile development

CI/CD integration

Analytical skills

Tools

Appium

Detox

Android Studio

Xcode

Job description

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).
• 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.