Sr. Software Engineer II, Mobile
NinjaTrader•Chicago, IL
•$150,000 - $200,000•Hybrid
About The Position
We are seeking a highly skilled and experienced Engineer specializing in Flutter to join our Mobile Engineering Team. As a Sr. Mobile Engineer II, you will lead mobile architecture, mentor engineers, and deliver scalable, high-performance applications that power a seamless cross-platform experience. You will influence technical direction across teams, set a high standard for engineering excellence, and drive end-to-end quality and reliability in our mobile products.
Requirements
- 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 (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
Nice To Haves
- Knowledge of native iOS (Swift) and Android (Kotlin/Java) integration
- Experience with fintech or trading platforms
- Contributions to open-source frameworks or SDKs
Responsibilities
- Own the life cycle of features through testing, debugging, documenting, releasing, and monitoring
- Take part in daily standups and regular team-wide meetings to discuss current and upcoming tasks
- Participate in 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 on mobile platforms
- Investigate issues, mitigate them, and recommend preventative measures
- Improve observability, monitoring, and crash analytics to ensure product stability and quality
- Help foster a culture of technical excellence, innovation, and collaboration
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
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What This Job Offers
Job Type
Full-time
Career Level
Mid Level
Education Level
No Education Listed
