NinjaTrader

Senior Software Test Engineer, Mobile

NinjaTrader

full-time

Posted on:

Location Type: Hybrid

Location: ChicagoCaliforniaColoradoUnited States

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Salary

💰 $100,000 - $150,000 per year

Job Level

About the role

  • Architect, build, and maintain a scalable end-to-end mobile automation framework for our Flutter-based iOS and Android applications
  • Lead automation efforts across both platforms, with a focus on long-term framework stability and coverage
  • Implement and enhance mobile automation using Appium, WebdriverIO, or similar automation frameworks
  • Design and enforce a Screen/Page Object Model architecture and project structure that scales with the mobile team
  • Write maintainable automation code in TypeScript/JavaScript, establishing standards others build on
  • Partner with Flutter engineers on application architecture to identify testability gaps and make automation-friendly design decisions early — before they become late-stage problems
  • Own CI/CD integration for mobile test pipelines: tagging strategies (e.g., smoke, regression), automated reporting, and pipeline reliability
  • Identify, analyze, and eliminate test flakiness — treating automation reliability as a product quality concern
  • Apply AI-assisted development tools — code generation, test generation, failure analysis — to improve coverage and productivity
  • Drive improvement in mobile testing tooling and documentation
  • Contribute to junior QA team members' growth through code reviews, pairing, and direct feedback
  • Uphold NinjaTrader SDLC and information security standards

Requirements

  • 7+ years of experience in QA engineering and test automation, with significant mobile automation experience
  • Proven experience building and scaling mobile E2E automation frameworks for iOS and Android
  • Strong hands-on experience with Appium, WebdriverIO, or comparable mobile automation tools
  • Demonstrated experience working with mobile engineers on testability-by-design
  • Deep understanding of Screen/Page Object Model or equivalent patterns for mobile test architecture
  • Strong proficiency in TypeScript or JavaScript
  • Experience with CI/CD tooling for mobile delivery, including GitHub Actions
  • Experience designing test strategies that integrate into automated pipelines at scale
  • Proven proficiency with AI-assisted engineering tools applied responsibly in a mobile QA context
  • Track record of improving automation stability and reducing flakiness
  • Strong communication and collaboration skills — comfortable as a peer to Flutter engineers and product managers
Benefits
  • Generous PTO
  • 7 Paid Holidays Annually + 5 Conditional Holidays Annually
  • 1 Service Day Annually
  • 401k with 3.5% Company Match
  • Paid Parental Bonding Leave
  • Health, Vision, Dental Coverage
  • Life and Disability Insurance Covered 100% by NinjaTrader
Applicant Tracking System Keywords

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

Hard Skills & Tools
mobile automationE2E automation frameworksAppiumWebdriverIOTypeScriptJavaScriptCI/CDtest strategiesAI-assisted engineering toolsScreen/Page Object Model
Soft Skills
communicationcollaborationmentoringcode reviewsfeedback