Sr. Software Engineer II, Exchange Connectivity

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: We are seeking a highly skilled and experienced Sr. Software Engineer II with deep expertise in exchange connectivity and high-performance trading systems. This is a high-impact role focused on interfacing directly with multiple exchanges, handling real-time market data, order routing, and trade processing with low latency and high reliability. You’ll be part of the Exchange Connectivity team, owning the software that communicates directly with exchanges worldwide. In this role you will: Design, implement, and support exchange connectivity components across multiple asset classes and protocols Develop and maintain market data handlers, order gateways, and contract/instrument reference data processors Create APIs to expose exchange services to the broader organization via REST, WebSocket, event bus, or other mechanisms Collaborate closely with the Trading OMS, FCM, and infrastructure teams Optimize for low latency, high throughput, and fault tolerance across all trading and data flows What you’ll need: 8+ years of experience in the trading industry, ideally with C++ or Rust Bachelor’s or Master’s degree in Computer Science, Electrical Engineering, or a related field Proven experience building exchange connectivity and market data systems across multiple venues Strong understanding of network programming, multicast UDP, TCP, and asynchronous I/O Deep knowledge of trading industry specifications (FIX, SBE, market data formats, etc.) Strong communication and collaboration skills, including the ability to mentor others and drive change across teams Experience supporting live trading systems in production — diagnosing connectivity issues, latency anomalies, and failover events Strong sense of ownership, with the ability to deliver robust, tested, and observable software in mission-critical environments Bonus Points for: Capital markets experience Performance profiling and tuning using perf, VTune, Wireshark, or similar tools to analyze and reduce latency Low-latency systems development with deep experience optimizing for pe…