NinjaHoldings

Senior QA Engineer

NinjaHoldings

full-time

Posted on:

Location Type: Remote

Location: Remote • Illinois • 🇺🇸 United States

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Salary

💰 $90,000 - $120,000 per year

Job Level

Senior

Tech Stack

AndroidCypressiOSRubyRuby on RailsSeleniumSQL

About the role

  • Design and implement testing strategies for complex web and mobile applications built on Ruby on Rails, ensuring consistent quality across all environments
  • Collaborate early in the development lifecycle to define quality standards, acceptance criteria, and testing scope for both web and mobile initiatives
  • Lead test automation efforts, developing and maintaining robust automated test suites for regression, integration, performance, and end-to-end testing across web, API, and mobile platforms
  • Perform manual testing for new and high-risk features, exploratory testing on iOS and Android builds, and post-release verification
  • Identify, isolate, and document defects with comprehensive reports and actionable insights for developers
  • Work closely with developers to validate backend logic, APIs, and integrations within Ruby on Rails services
  • Champion quality by driving process improvements, mentoring junior QA engineers, and introducing new tools or frameworks to increase testing efficiency and coverage
  • Collaborate cross-functionally to ensure QA coverage aligns with business priorities and customer expectations

Requirements

  • 5+ years of professional experience in Quality Assurance for web and mobile applications
  • Proven experience testing Ruby on Rails applications, including APIs and, background jobs
  • Hands-on experience testing mobile applications (both iOS and Android)
  • Strong proficiency with test automation tools and frameworks (e.g., Cypress, Selenium, Playwright, Appium, or similar)
  • Solid understanding of continuous integration and delivery (CI/CD) pipelines and how automated testing integrates within them
  • Demonstrated ability to analyze system behavior, identify potential risks, and propose effective testing strategies
  • Experience with SQL and basic database validation
Benefits
  • Competitive salary and benefits package
  • Flexible, remote work
  • Fun, fast-paced work environment
  • Dynamic start-up culture
  • Convenient downtown Chicago office located in the heart of the city
  • Equal opportunity employer

Applicant Tracking System Keywords

Tip: use these terms in your resume and cover letter to boost ATS matches.

Hard skills
Quality AssuranceRuby on RailsAPI testingmobile application testingtest automationCypressSeleniumPlaywrightAppiumSQL
Soft skills
collaborationmentoringprocess improvementanalytical skillscommunication
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