Sr. Software Engineer II, Backend (Rust)

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

NinjaTrader's identity and verification platform is built in Rust and it sits on the critical path for every new customer we bring on. We're hiring a Sr. Software Engineer II with deep Rust expertise to own that surface end to end the provider/vendor integrations the verification logic and the asynchronous delivery of outcomes into the systems that act on them. You'll be NinjaTrader's Rust authority for the onboarding domain while working alongside Rust engineers across the wider Payward organization. As the senior-most Rust engineer on the Onboarding squad your work will significantly impact approval rates time-to-funding and our ability to extend the platform into new markets. In this role you will Design develop and maintain Rust services and crates that power account creation identity verification and KYC/CIP decisioning Build integrations with identity fraud and screening providers including response modeling deserialization and fixture-based scenarios that make third-party behavior deterministically testable Write the determination logic as pure table-tested functions with one authoritative definition of each rule rather than the same rule reimplemented in three places Design asynchronous task-based delivery of outcomes to downstream systems idempotency keys retry and resumption semantics and completion gates that wait on a real receipt instead of assuming success Own data-handling correctness for flows carrying PII and identity documents covering redaction and minimal projections encryption in transit and at rest secret management and audit logging Express market and product differences as policy and configuration so supporting a new jurisdiction is a policy change rather than a refactor Operate what you build instrumentation structured logging alerting and incident response for services where a silent failure quietly stops customers from funding Design and implement scalable reliable service architecture using cloud-based infrastructure such as Google Cloud Platform and Kubernetes Act as the onboarding domain's authority during cross-functional Rust design reviews brokering technical contracts with external squads and mentoring internal engineers as they grow their Rust proficiency What you'll need 6+ years of professional software development experience including substantial production Rust Strong command of Rust in production ownership and lifetimes error modeling trait design and the async ecosystem (tokio) plus serde and a SQL layer such as sqlx or diesel Demonstrated ability to write highly testable Rust including pure functions at decision boundaries table-driven tests fixture-based integration testing and strict contract tests Proven experience designing HTTP and event-driven service integrations including versioning and backward compatibility Experience handling sensitive data under real constraints (encryption secret management least-privilege access and audit requirements) in containerized cloud environments such as Docker and Kubernetes Demonstrated use of AI coding agents (Codex Cursor Claude Code) as a standard part of your engineering workflow with the judgment to review and validate AI-assisted code before it ships Excellent communication including driving technical contracts to agreement with teams outside your reporting line and full ownership of what you ship Bachelor's or Master's degree in Computer Science Software Engineering or a related field (or equivalent practical experience)

Bonus Points

for Experience with identity verification KYC/AML CIP or fraud and risk decisioning systems Experience in fintech trading brokerage or crypto particularly in a regulated financial services environment Experience in a large Rust monorepo with shared crates workspace tooling and multi-team code ownership Familiarity with policy-driven flow engines (YAML or JSON defined workflows) schema-driven contracts such as gRPC or protobuf and feature flagging platforms such as Statsig Passion for futures crypto derivatives and trading technologies is a strong plus

Compensation

The salary range for this role will be $140000.00 - $190000.00 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.