Sr. Engineer, QA

LoJack Mexico Careers; Ciudad de México; Hybrid; MXN 600,000 - 900,000; Full time

Job summary

LoJack Mexico Careers in Mexico City is seeking a Senior QA Engineer to own the quality of our web UI and native/hybrid mobile apps. You will design test strategies, build reliable automation, and mentor other QA engineers across distributed teams.

The role requires 5+ years in software QA, automation with Playwright or Selenium, REST API testing, and strong English communication. A Bachelor's in Computer Science and leadership skills are essential.

Qualifications

• Bachelor's degree in Computer Science.
• 5+ years in software QA with automation experience.
• Experience automating web UI and mobile apps (iOS/Android).
• Strong leadership and mentoring abilities.

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

Skills

Test automation

UI testing

Leadership

English communication

Agile/Scrum

Education

Bachelor's degree in Computer Science

Tools

Playwright

Selenium

Postman

REST Assured

Jenkins

GitHub Actions

Job description

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.