Sr. Software Test Engineer Mobile

What you'll do:

Mobile is central to how NinjaTrader reaches the next generation of retail traders. Our Flutter-based platform runs on iOS and Android and the bar for quality is high — traders make real financial decisions on it. As a Sr. Software Engineer in Test on the Mobile team you will own automation and quality for our mobile applications working as a peer to Flutter engineers and product managers. You will shape how our apps are built to be testable not just verify what ships.

In this role you will:

• 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

What you'll need:

• 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

Bonus points for:

• Hands-on experience with Flutter-native testing tools (flutter_test integration_test package)
• Familiarity with iOS and Android internals simulators and emulators
• Experience with cloud device labs (e.g. Sauce Labs BrowserStack or similar)
• API automation testing experience
• Accessibility testing awareness (WCAG or mobile platform standards)
• Financial trading systems or fintech experience

Compensation:

The salary range for this role will be $100000.00 - $150000.00 USD. In addition this position will also receive an annual target bonus of 10%. Bonus pay at NinjaTrader is based on individual performance (50%) as well as company/team performance (50%).

Salary and bonus earnings are only two components of the total compensation package offered by NinjaTrader. NinjaTrader offers a 401K plan through ADP under which the company will match up to 3.5% of employee contributions. Annual paid time off allowance accrues at a rate of 18 days per year (some positions may qualify for more) plus seven paid holidays.

Location:

This role is based in Chicago IL. *There may be remote flexibility for exceptional candidates in the following states: California Colorado Florida Georgia Illinois Indiana Minnesota Missouri Montana New Jersey New York North Carolina Ohio Oregon Pennsylvania South Carolina Texas Utah Vermont Virginia Washington Washington DC Wisconsin.

Hybrid:

For Chicago-based employees we follow a hybrid work schedule: In-office Tuesday through Thursday with remote work on Mondays and Fridays. In addition to these weekly remote days we offer:

• 20 additional flex remote days annually
• 5 Company Wide Office-Optional weeks tied to major holidays

What We Do

More than 2 million futures traders trust NinjaTrader's award-winning software and brokerage services to help them trade smarter. Since 2003 we've been building better futures for all traders by making futures trading more accessible scalable and user-friendly. As a bold innovative thought leader in the trading space we build products and services that empower active futures traders to easily analyze and react to data from the world's leading financial markets. Veteran and new futures traders alike look to us for our always-on support daily free education and analysis access to developer apps and much more. We believe in the power of innovation to drive futures trading forward. Together we continue to redefine what's possible in trading advocate for our customers and provide the best tools support and experiences to the fast-growing retail futures trading community. Located in Chicago our entrepreneurial employee-centric culture is inspiring innovative and inviting. We're committed to diversity equity and inclusivity so our team members feel at ease to be themselves and empowered to deliver the work they do best.

Why Work With Us

Our team members are our #1 asset and the signature ingredient to our success. When you join NinjaTrader you become part of an innovative forward-looking community that encourages creativity collaboration and camaraderie to deliver the best futures trading experience possible to our more than 1.8 million users. See why better futures start here.

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