Sr. Mobile Engineer II

About NinjaTrader NinjaTrader: Driving innovation, empowering traders, and building a global community. At NinjaTrader, by Payward, we empower traders worldwide with our award-winning technology and brokerage services. Trusted by over 1.8 million users globally, we’re committed to providing industry-leading tools and resources to help our customers excel in futures trading. Our powerful platform delivers a comprehensive suite of features, including advanced charting, market analytics, trade simulation, and trading system development. Whether you're a seasoned professional or just starting out, NinjaTrader is designed to support your futures trading journey every step of the way. With our innovative web and mobile platforms, you can enjoy a seamless trading experience across all your devices, ensuring you stay connected to the markets anytime, anywhere. Discover how NinjaTrader is shaping the future of trading. Learn more at account.ninjatrader.com or explore our app on iPhone and Android. NinjaTrader is proud to be part of the Payward family of companies. --- NinjaTrader is a group of affiliated companies operating under NinjaTrader Group, LLC (“NTG”), including NinjaTrader, LLC (“NT”) and NinjaTrader Clearing, LLC d/b/a NinjaTrader, Kraken Derivatives US, and Tradovate (“NTC”). NT owns and supports the proprietary NinjaTrader trading platform as a software development company, while NTC provides brokerage services. NTC is registered with the Commodity Futures Trading Commission (“CFTC”) as a futures commission merchant (“FCM”) and is a National Futures Association (“NFA”) Member (NFA ID: 0309379). View Disclosures: ninjatrader.com/disclosures/ Futures trading involves substantial risk and is not suitable for everyone. Losses may exceed the initial investment. Past performance is not necessarily indicative of future results.

NinjaTrader

Grow your FinTech career at NinjaTrader by Payward or start your futures trading journey with us.

Trading PlatformTrading SoftwareFuturesForexEquitiesIndexesStrategy DevelopmentOptimizationBacktestingChart Trader

N

ninjatrader.com

201-500 employees

Financial Services

Chicago, Illinois

2004

Privately Held

29k LinkedIn followers

Raised $100M

• Join us as we redefine what's possible in trading, advocate for our customers,
• and continue our journey toward becoming the world's top retail-focused trading
• platform in the world.
• Join our Mobile Engineering team as a Sr. Software Engineer II specializing in
• Flutter. You will champion the execution of our mobile architecture, mentor
• engineers, and deliver scalable, high-performance applications that provide a
• seamless cross-platform experience. You will also shape technical direction
• across teams, set a high standard for engineering excellence, and drive quality
• and reliability across our mobile products.
• Own the life cycle of features through debugging, documenting, testing,
• releasing, and monitoring
• Attend daily stand-ups and regular team-wide meetings to discuss current and
• upcoming tasks
• Contribute to the technical roadmap for mobile architecture, frameworks, and
• tooling
• Participate in design reviews, architecture discussions, and performance
• optimization efforts across iOS and Android
• Implement robust, maintainable Flutter solutions that follow best practices
• for state management, dependency injection, and reactive programming
• Collaborate with Product and Design teams to iteratively improve the user
• experience oncmobile platforms
• Investigate issues, mitigate them, and recommend preventative measures
• Improve observability, monitoring, and crash analytics to ensure product
• stability and quality
• Foster a culture of technical excellence, innovation, and collaboration

Required

• 2+ years of hands-on Flutter and Dart experience in production environments
• Understanding of mobile architecture, state management, and design patterns
• Experience maintaining testing strategies for Flutter applications, spanning
• unit, widget, integration, and end-to-end levels
• Familiarity with building CI/CD automation for mobile delivery
• Understanding of RESTful APIs, WebSockets, and offline data handling
• Familiarity optimizing performance, reliability, and user experience across
• diverse devices
• Ability to perform in a team environment adopting agile principles
• Strong written and verbal communication skills
• Strong grasp of OOP design principles

Preferred

• Experience with fintech or trading platforms
• Contributions to open-source frameworks or SDKs

• The salary range for this role will be $140,000.00 - $190,000.00 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.
• 5 Company Wide Office-Optional weeks tied to major holidays
• 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