Sr. Software Engineer II, Backend - NT Connect
NinjaTrader is a futures trading provider offering an integrated, multi-device trading platform for active traders. It provides tools, services, and support for both new and experienced traders to access global futures markets, including Micro E-mini futures.
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About NinjaTrader
NinjaTrader delivers integrated multi-device trading using a cloud-based technology designed for active futures traders. They provide access to the world’s most popular futures markets, including E-mini indexes, with no deposit minimums, low margins, and low commissions. The platform is highly customizable, allowing users to integrate thousands of third-party add-ons or develop their own tools using a C# based framework. NinjaTrader is a futures trading provider that centralizes tools and services for both new and experienced traders, offering professional trading platforms for charting, free trading simulation, and comprehensive support resources.
Skills
About the Role
You will help design, build, and evolve the backend services that power NT Connect, NinjaTrader's API-based brokerage integration layer connecting introducing brokers, fintech partners, and third-party platforms. You'll work closely with Engineering, Product, QA, and cross-functional partners to deliver scalable, high-quality solutions for broker partners, with your work directly impacting partner success, trader outcomes, and revenue growth. You'll get to work on distributed systems, real-time systems, and API platforms at the intersection of technology and financial markets.
Requirements
- Bachelor's or Master's degree in Computer Science, Software Engineering, or a related field (or equivalent practical experience)
- 8+ years of software development experience with distributed, backend systems, preferably in a high-performance or near real-time environment
- Strong proficiency in one or more JVM-based languages (Scala, Java, or Kotlin); experience with reactive, message-driven frameworks is highly valued
- Proven experience designing and building RESTful APIs and WebSocket services for external partners or B2B platforms
- Experience with Kubernetes and cloud infrastructure (preferably GCP), with a focus on scalability and high availability
- Deep understanding of modern distributed systems and ability to troubleshoot across the full stack (HTTP/HTTPS, WebSockets, TLS, TCP/IP, DNS)
- Strong understanding of security best practices for exposed APIs and backend services: authentication, authorization, data isolation, encryption, and audit logging
- Strong problem-solving skills with the ability to take full ownership of projects—from design through deployment, maintenance, and iteration
- Excellent written and verbal communication skills; a collaborative team player who seeks feedback and drives continual improvement
- Demonstrated use of AI coding agents and tools (e.g., GitHub Copilot, Cursor, Claude Code, or equivalent) to meaningfully improve personal and team productivity
- Familiarity with financial systems and trading concepts: orders, fills, margin, account lifecycle, and regulated workflows (KYC/AML, reporting)
- Experience with FIX protocol, market data feeds, or brokerage integration patterns (FCM, clearing, or embedded finance platforms)
- Background in multi-tenant SaaS platform architectures, partner onboarding, and API rate limiting strategies
- Experience working in a regulated fintech, trading, or brokerage environment
- Familiarity with Pub/Sub messaging systems (e.g., GCP Pub/Sub) and event-driven architectures
- Familiarity with Node.js, particularly for API integration or SDK-adjacent backend work
Responsibilities
- Design, develop, and maintain high-quality backend services that power the NT Connect brokerage API platform, ensuring scalability, reliability, and low-latency performance
- Architect and implement RESTful and WebSocket APIs for partner integrations, including introducing brokers, fintech partners, and third-party trading platforms
- Deploy and manage backend services in a Kubernetes/GCP environment, with a focus on availability, resilience, and observability
- Implement robust monitoring, logging, and alerting solutions using industry-standard observability tooling (e.g., OpenTelemetry) to track and analyze system performance in real time
- Collaborate with cross-functional teams and stakeholders to deliver end-to-end solutions that meet partner requirements, compliance standards, and business goals
- Uphold and elevate engineering quality through code reviews, test coverage, CI/CD pipelines, release readiness, and incident response
- Drive architectural decisions and technical roadmap planning, helping shape the evolution of the NT Connect platform
- Leverage AI coding agents (e.g., GitHub Copilot, Cursor, Claude Code) and modern developer tooling to accelerate delivery, improve code quality, and raise the team's engineering velocity
Benefits
- 20 additional flex remote days annually
- 5 Company Wide Office-Optional weeks tied to major holidays
- 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