Sr. Mobile Engineer II

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: .JOIN US ON OUR MISSION TO BECOME THE #1 RETAIL TRADING PLATFORM IN THE WORLDWelcome 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 monitoringAttend daily stand-ups and regular team-wide meetings to discuss current and upcoming tasksContribute to the technical roadmap for mobile architecture, frameworks, and toolingParticipate in design reviews, architecture discussions, and performance optimization efforts across iOS and AndroidImplement robust, maintainable Flutter solutions that follow best practices for state management, dependency injection, and reactive programmingCollaborate with Product and Design teams to iteratively improve the user experience oncmobile platformsInvestigate issues, mitigate them, and recommend preventative measuresImprove observability, monitoring, and crash analytics to ensure product stability and qualityFoster a culture of technical excellence, innovation, and collaborationWhat you'll need:6+ years of professional software engineering experience2+ years of hands-on Flutter and Dart experience in production environmentsUnderstanding 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 levelsFamiliarity with building CI/CD automation for mobile deliveryUnderstanding of RESTful APIs, WebSockets, and offline data handlingFamiliarity optimizing performance, reliability, and user experience across diverse devicesAbility to perform in a team environment adopting agile principlesStrong written and verbal communication skillsStrong grasp of OOP design principlesBonus Points for:Knowledge of native iOS (Swift) and Android (Kotlin/Java) integrationExperience with fintech or trading platformsContributions to open-source frameworks or SDKsCompensation: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 annually5 Company Wide Office-Optional weeks tied to major holidaysOur Core Benefits Include:Generous PTO7 Paid Holidays Annually + 5 Conditional Holidays Annually1 Service Day Annually401k with 3.5% Company MatchPaid Parental Bonding LeaveHealth, Vision, Dental CoverageLife and Disability Insurance Covered 100% by NinjaTraderWe 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.