Sr. Mobile Engineer II
NinjaTrader14 hours ago
Base Salary
$125k - $175k/yr
Responsibilities
- Own the full feature lifecycle, including debugging, documentation, testing, release, and monitoring.
- Implement maintainable Flutter solutions using state management, dependency injection, and reactive programming practices.
- Contribute to mobile architecture, frameworks, tooling, technical roadmaps, design reviews, and performance optimization.
- Maintain testing strategies spanning unit, widget, integration, and end-to-end testing.
- Improve observability, monitoring, crash analytics, product stability, and reliability across mobile products.
- Mentor engineers and foster technical excellence, innovation, and collaboration.
- Collaborate with Product and Design teams to improve the mobile user experience.
- Investigate issues, mitigate them, and recommend preventative measures.
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 such as BLoC, MVVM, and Clean Architecture.
- Experience with Flutter application testing across unit, widget, integration, and end-to-end levels.
- Familiarity with mobile CI/CD automation, RESTful APIs, WebSockets, and offline data handling.
- Experience optimizing performance, reliability, and user experience across diverse devices.
- Strong understanding of object-oriented programming design principles.
- Strong written and verbal communication skills and ability to work in a team environment.
- Knowledge of native iOS with Swift and Android with Kotlin or Java is preferred.
- Fintech or trading-platform experience and open-source framework or SDK contributions are preferred.
Benefits
- Chicago-based hybrid schedule with in-office work Tuesday through Thursday and remote work Monday and Friday.
- Remote flexibility may be available for exceptional candidates in specified states.
- 20 additional flex remote days annually and five company-wide office-optional weeks tied to major holidays.
- 18 days of annual paid time off, seven paid holidays, five conditional holidays, and one service day.
- 401(k) plan through ADP with up to a 3.5% company match.
- Paid parental bonding leave.
- Health, vision, dental, life, and disability insurance, with life and disability coverage paid 100% by NinjaTrader.
- Annual target bonus of 12%.
About NinjaTrader
NinjaTrader builds a multi-device trading platform and runs a futures brokerage and clearing firm for active retail and professional traders. Its software offers advanced charting, strategy development, backtesting, and trade execution, and the brokerage earns commissions and fees. Founded in 2004 and headquartered in Chicago, it is part of Payward (Kraken).