Sr. QA Engineer, Software - UI
Position Summary
We are hiring a Senior QA Engineer to own the quality of our web UI and native and hybrid mobile applications (iOS and Android). You will design the test strategy, build & maintain reliable automation, lead and mentor other QA engineers while working closely with teams distributed across the world.

Responsibilities

Define and drive the test strategy, plans and cases for web UI, native/hybrid mobile (iOS/Android) applications, translating use cases and acceptance criteria into functional, regression, integration and exploratory tests

Design, build and maintain reusable, reliable and scalable test automation frameworks for UI, mobile and API layers, integrated into CI/CD pipelines for fast release feedback; setup & manage real IoT devices for automation test suite

Ensure the best possible quality, performance, UX, accessibility and responsiveness across devices, OS versions, screen sizes and browsers, including consistent behavior of hybrid apps on iOS and Android

Identify performance bottlenecks and defect trends through stress testing of the applications for performance and root-cause analysis, partner with developers on fixes, and research and adopt new testing tools and practices

MUST HAVE

Excellent interpersonal and communication skills in English, with the ability to interact with diverse groups of people

Strong leadership and organizational skills: the ability to influence, motivate, coach and mentor other engineers, prioritize multiple tasks with excellent attention to detail, and work independently or collaboratively, taking initiative and staying productive under pressure

Bachelor's degree in Computer Science

5+ years of experience in software QA, including the following:





Test automation for web UI and native and hybrid mobile (iOS and Android) applications using tools such as Playwright or Selenium

Hands-on automation development in TypeScript/JavaScript (React-based UI applications)

Testing REST-based services and APIs using tools such as Postman or REST Assured

Hybrid and native mobile app testing (webview and native context switching, native plugin and bridge behavior, cross-platform consistency) across real devices, simulators/emulators and multiple OS versions, including app store release and beta distribution processes

Creating test plans, test cases and defect reports, and working in Agile/Scrum teams

Integrating automated tests into CI/CD pipelines (for example Jenkins or GitHub Actions)

Strong Pluses

AI Tooling to perform entire test life cycle of Quality Assurance

Master's degree in Computer Science or equivalent

Experience testing UI and mobile applications for large-scale distributed systems, and understanding the architectural patterns behind them

Location

Mexico City, Mexico

Hybrid Schedule: In office Monday-Thursday; Remote Friday

What We Offer

The opportunity to work on impactful products in a collaborative engineering environment.

Challenges that encourage technical growth, innovation, and ownership.

A team-oriented culture focused on quality, continuous learning, and shared success.

Competitive compensation and a comprehensive benefits package, where applicable.

Equal Opportunity
We are committed to creating an inclusive and welcoming workplace. All qualified applicants will receive consideration for employment without regard to race, color, religion, sex, national origin, age, disability, veteran status, genetic information, or any other legally protected characteristic.

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📌 Sr. Engineer, QA (Ciudad de México)
🏢 LoJack Mexico Careers
📍 Ciudad de México