Sr. Software Engineer I, Evaluation Services

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 Sr. Software Engineer to join our Evaluation Services team. Our Evaluation Services business powers funded trader programs that give aspiring traders a pathway to professional trading capital. In this role, you will serve as a trusted technical advisor to our partners, working closely with Technical Account Managers and partner engineering teams to drive successful integrations. You will be the go-to expert for complex API challenges, setting the quality bar for technical support while thriving in a fast-paced environment where no two days look the same. 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 What you'll need: 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 by 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 with attention to detail in documentation, communication, and technical deliverables Ability to think on your feet and adapt quickly when priorities shift or unexpected issues arise Outstanding written and verbal communication skills with the ability to translate complex technical concepts for both technical and non-technical audiences Self-starter who thrives in ambiguity and can manage multiple high-priority partner engagements simultaneously Bonus points for: Experience with trading platforms, fintech, or capital markets technology Familiarity with React, Node.js, or full-stack TypeScript development Background in developer experience (DevEx), developer advocacy, or technical evangelism Experience with API documentation tools (Swagger/OpenAPI, ReadMe, or similar) Prior experience supporting enterprise or B2B partner integrations Passion for futures, derivatives, and trading technologies Compensation: The salary range for this role will be $125,000.00 - $175,000.00 USD. In addition, this position will also receive an annual target bonus of 12 %. 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 annually 5 Company Wide Office-Optional weeks tied to major holidays Our Core Benefits Include: 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 We 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.