NinjaTrader is an investor-backed, growth stage FinTech company servicing hundreds of thousands of traders by providing award-winning software and brokerage services. We are building products and services which empower active traders to easily analyze and react to data from the world’s leading financial markets. Located in Chicago, our unique employee-centric company culture is one that our team finds inviting, comfortable and fun. Please visit to learn more about our business.

Creating a great customer experience through delightful mobile and web applications is core to NinjaTrader’s success. As an accomplished senior mobile engineer, reporting to our Mobile Engineering Manager, this is a terrific opportunity to join a fast-growing, exciting company to be a leader in our team of mobile engineers and help them in creating seamless financial experiences on mobile devices.

Successful candidates will come with hands-on experience in developing awesome apps on mobile platforms using Flutter. We want to see examples of your work in App stores, with the ability to discuss what decisions you made to make these apps successful.

In this role, you will:

  • Design, build, improve, and maintain features and mobile applications
  • Build and maintain efficient, reusable, and reliable code
  • Work with the wider development team to produce new enhancements, enhance APIs and ensure alignment between the web and mobile Flutter versions of the applications
  • Collaborate with Product and Design teams to iteratively improve the user experience on mobile platforms
  • Take part in daily standups and regular team-wide meetings to discuss current and upcoming tasks
  • Own the life cycle of your features through testing, debugging, documenting, releasing, and monitoring
  • Write unit and UI tests to identify malfunction
  • Ensure the performance, quality, and responsiveness of applications
  • Identify and correct bottlenecks and fix bugs
  • Investigate issues, mitigating them, and recommending preventative measures
  • Support other developers, QA, and Product team in resolving problems and identifying client requirements
  • Report to the stakeholders on progress, timelines, and roadblocks
  • Coach other engineers through pair programming, coder reviews, and other collaborative efforts

Key Position Requirements:

  • Bachelor’s degree in Computer Science, Software Engineering, or equivalent working experience
  • 5+ years of professional experience developing and shipping production-ready mobile experiences
  • Experience with Dart and the Flutter ecosystem
  • Solid understanding of mobile development principles, design patterns, and best practices
  • Experience with Git and version control
  • Experience with REST APIs
  • Passion for developing high-quality user experiences on mobile devices
  • Familiarity with OOP design principles
  • Experience with third-party libraries and APIs
  • Ability to perform in a team environment adopting agile principles
  • Strong written and verbal communication skills



Our Benefits:  

  • Health, Vision, Dental Coverage
  • 401k with Company Match
  • Life and Disability Insurance covered 100% by NinjaTrader
  • Generous PTO
  • 7 paid holidays annually



  • Base Salary up to $145,000 as determined by length and relevance of professional experience
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