NinjaTrader Logo

NinjaTrader

Sr. Mobile Engineer II

Posted Yesterday
Easy Apply
Remote or Hybrid
Hiring Remotely in Chicago, IL
Senior level
Easy Apply
Remote or Hybrid
Hiring Remotely in Chicago, IL
Senior level
Lead mobile architecture and develop scalable Flutter applications for iOS and Android. Own features through testing, release, monitoring, and debugging; guide technical roadmaps; optimize performance and reliability; improve observability and crash analytics; collaborate with Product and Design; mentor engineers; and promote engineering excellence.
The summary above was generated by AI

Disclaimer: Please be advised that the most accurate and up-to-date information about our open roles—including job descriptions, compensation, and benefits—can only be guaranteed on our official job board. For the latest listings and details, please visit: https://job-boards.greenhouse.io/ninjatrader.

JOIN US ON OUR MISSION TO BECOME THE #1 RETAIL TRADING PLATFORM IN THE WORLD

Welcome to the dynamic world of NinjaTrader! As an industry-leading trading platform and futures broker, we're empowering traders to take control of their financial destiny. How do we do it? We provide cutting-edge products and services that enhance the trading journey. Whether a seasoned pro or just starting out, NinjaTrader equips traders with award-winning software and brokerage services to navigate the world's leading financial markets with confidence.  

Our growth story is nothing short of exhilarating. Since 2003, NinjaTrader has been dedicated to understanding and supporting traders on their journey toward trading triumph. Through those efforts, our user base has grown to over 2 million users and we have become the number one rated futures brokerage worldwide. 

But we're not stopping there. We're constantly evolving, pushing boundaries, and modernizing the futures industry. Our commitment to innovation means users will always have access to dynamic tools, real-time support, and a community of like-minded traders.  

So, why work at NinjaTrader? Here, you're not just part of a team; you're part of a movement. We empower employees to reach new heights in their careers by providing a dynamic culture focused on social connection, professional development, and employee recognition initiatives. Sounds too good to be true? Take it from our employees. 

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.  

What you'll do:

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.

In this role you will:

  • 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

What you'll need:

  • 6+ years of professional software engineering experience
  • 2+ years of hands-on Flutter and Dart experience in production environments
  • Understanding of mobile architecture, state management, and design patterns (e.g. BLoC, MVVM, Clean Architecture)
  • 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

Bonus Points for:

  • Knowledge of native iOS (Swift) and Android (Kotlin/Java) integration
  • Experience with fintech or trading platforms
  • Contributions to open-source frameworks or SDKs

Compensation:

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.

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

Our Core Benefits Include:

  • 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

We are committed to equal employment opportunity regardless of race, color, ancestry, religion, sex, national origin, sexual orientation, age, citizenship, marital status, disability, gender, gender identity or expression, or veteran status. We are proud to be an equal opportunity workplace.

Similar Jobs at NinjaTrader

2 Hours Ago
Easy Apply
Remote or Hybrid
Easy Apply
Senior level
Senior level
Fintech • Software • Financial Services
Design, develop, deploy, and maintain high-volume backend systems supporting customer funding, trading, and back-office operations. Lead development practices through code reviews, mentoring, architecture guidance, and quality ownership. Build reliable, observable software using Python and TypeScript, collaborate with finance and trading teams, improve operational efficiency, document workflows, and oversee projects from design through iteration.
Top Skills: Ai-Assisted Development ToolsGoogle Cloud PlatformLinuxOpentelemetryPythonTypescript
3 Days Ago
Easy Apply
Remote or Hybrid
Easy Apply
Entry level
Entry level
Fintech • Software • Financial Services
Supports brokerage customers and internal teams with trade-related assistance, including trade allocations, special bookings, FX trades, treasury processing, platform setup, trade-break resolution, commission adjustments, contract expiration monitoring, and end-of-day checks. The role provides real-time customer troubleshooting, collaborates with Risk, Finance, Account Management, and Customer Support, and requires accurate multitasking across weekend and overnight operations.
Top Skills: CqgExcelMicrosoft Office Suite
14 Days Ago
Easy Apply
Remote or Hybrid
Easy Apply
Expert/Leader
Expert/Leader
Fintech • Software • Financial Services
Owns fraud and market-abuse detection models, rules, and partner-facing surveillance reporting across trading data. Investigates wash trading, collusion, hedging, reverse trading, and other suspicious activity; calibrates thresholds, validates false positives, maintains data quality, and produces evidence-based findings. Requires strong SQL, cloud data warehouse experience, futures and derivatives knowledge, anomaly detection expertise, and the ability to communicate findings to partners and executives.
Top Skills: AthenaBigQueryPythonSQL

What you need to know about the London Tech Scene

London isn't just a hub for established businesses; it's also a nursery for innovation. Boasting one of the most recognized fintech ecosystems in Europe, attracting billions in investments each year, London's success has made it a go-to destination for startups looking to make their mark. Top U.K. companies like Hoptin, Moneybox and Marshmallow have already made the city their base — yet fintech is just the beginning. From healthtech to renewable energy to cybersecurity and beyond, the city's startups are breaking new ground across a range of industries.

Sign up now Access later

Create Free Account

Please log in or sign up to report this job.

Create Free Account