Sr. Software Engineer I, Evaluation Services

Responsibilities

• In this role you will:
• Serve as the senior technical point of contact for partners integrating with NinjaTrader APIs, providing expert guidance on authentication, endpoints, data models, and architectural best practices
• Partner directly with external engineering teams to debug complex integration issues, conduct code reviews of their implementations, and accelerate time-to-production
• Collaborate closely with Technical Account Managers to deliver a seamless partner experience, translating business requirements into technical solutions and providing real-time support during critical integration milestones
• Diagnose and resolve complex API issues spanning WebSocket connections, REST endpoints, and real-time data feeds, often under time pressure with high-value partners
• Own the quality standard for API support, establishing best practices for troubleshooting, documentation, and partner communication that the broader team can follow
• Build and enhance internal tools, scripts, and diagnostic utilities that improve support efficiency and enable faster issue resolution
• Drive continuous platform improvement by synthesizing partner feedback into actionable recommendations for Product and Engineering, influencing the API roadmap
• Mentor junior team members on technical troubleshooting, partner communication, and maintaining composure in high-stakes situations
• Develop deep expertise in NinjaTrader's evaluation platform, trading systems, and API architecture to provide authoritative technical leadership

Requirements

• 5+ years of software engineering experience, with deep hands-on expertise in API development, system integrations, and building or supporting partner-facing platforms
• Proven track record of working alongside Technical Account Managers and cross-functional teams to deliver successful partner outcomes in a fast-paced environment
• Strong proficiency with REST APIs, WebSockets, JSON, OAuth, and API debugging tools (Postman, curl, browser developer tools, network analyzers)
• Hands-on experience with TypeScript/JavaScript, Python, or similar languages for scripting, debugging, and building reference implementations
• Demonstrated ability to work directly with partner engineering teams-reviewing code, pair-debugging, and guiding architectural decisions
• Excellent troubleshooting skills with the ability to analyze logs, trace API calls, and isolate issues across distributed systems under pressure
• High quality standards

Additional Information

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.

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