Jobs at Topstep

Own and resolve complex, recurring trader-impacting issues by reproducing, diagnosing, and shipping code fixes. Write backend C#/.NET and React front-end code, build admin tooling, improve observability, lead incident response and post-incident reviews, and partner across engineering, QA, Cloud Ops, and Product to reduce recurring support toil.

Build and own a framework-agnostic charting engine core and its React binding: rendering layers, real-time data plumbing, indicator math, drawing tools, performance (60fps) discipline, visual testing, architectural leadership, mentoring, and integrations across web and mobile.

Build and launch a React Native mobile trading MVP, define reusable architecture and patterns, integrate with GraphQL/Apollo and backend services, ensure performance and production quality (testing, crash reporting, CI/CD, App Store/Play Store releases), and embed in cross-functional teams to drive ongoing mobile development and mobile-first practices.

Lead cross-functional release execution and operational programs for the trading platform, driving automation, documentation, and KPIs. Coordinate engineering, QA, product, and support to remove manual work, run recurring reporting, and embed scalable processes that improve reliability and onboarding.

Build, own, and operate cloud-native .NET services powering real-time trading, market data, and brokerage integrations. Ship features end-to-end, write tests, participate in on-call rotations, improve observability, and occasionally contribute to React/TypeScript frontend work.

Provide broad corporate legal support including commercial contracting (SaaS/vendor/software), corporate governance, litigation and subpoena management, privacy/cybersecurity counseling, and cross-functional counsel to product, engineering, compliance, and trader support teams.

Own and evolve core trading platform services: design and build cloud-native .NET microservices, APIs, and high-availability distributed systems. Drive architecture, reliability, monitoring, incident response, and mentor engineers while occasionally contributing to React/TypeScript frontend work.

Lead the Payments & Wallet product area: own roadmap for checkout, funding, balances, transfers, payouts, disputes, and new payment methods. Define PRDs, coordinate cross-functional delivery, run experiments and SQL-driven analysis to optimize conversion and reliability, manage vendors/integrations, and ensure compliance (PCI, NACHA, OFAC). Report metrics and quantify feature ROI.

Lead design and delivery of cloud-native .NET services for a high-throughput trading platform. Own end-to-end systems, drive architecture and reliability, mentor engineers, participate in on-call and incident response, and occasionally contribute to React/TypeScript frontend work while establishing engineering standards and observability.

Lead development of automated API, UI, and end-to-end tests for a real-time trading platform. Extend AI-assisted test generation, build scalable CI/CD test frameworks for order lifecycles and market-data streams, reduce flakiness, triage failures, mentor engineers, and drive quality and testability across the product.