# Sr. Software Engineer II, Fullstack - NT Connect

**Company:** [NinjaTrader](https://hotfix.jobs/companies/ninjatrader)
**Location:** Chicago, IL
**Role:** Fullstack Engineering
**Salary:** $140k – $190k/yr
**Experience:** 8+ years
**Skills:** Node.js, TypeScript, React, REST APIs, Websocket, Docker, Kubernetes, GCP, SQL, Oauth2
**Posted:** 2026-05-20

> Senior fullstack engineer building NT Connect, an API-based brokerage integration layer. Work across backend services, APIs, and frontend tooling using Node.js, TypeScript, and React on GCP with Docker/Kubernetes.

## Job Description

## Responsibilities
- Contribute to the development, optimization, and operational health of NT Connect's web-based platform, building new features and maintaining existing ones across the full stack
- Design and implement scalable, efficient backend services and APIs using Node.js and TypeScript, deployed on cloud-based infrastructure (e.g., Google Cloud Platform)
- Collaborate closely with UX/UI designers to translate design prototypes into high-quality, scalable frontend code that adheres to NinjaTrader's design system and branding guidelines
- Ensure seamless integration of frontend components with backend systems, including account management tools, partner onboarding flows, and real-time market data feeds
- Develop and maintain real-time performance monitoring and logging solutions to ensure the platform remains responsive, observable, and production-ready
- Collaborate with other engineering teams, QA, and Product Managers to deliver end-to-end partner solutions that meet reliability, compliance, and usability standards
- 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

## Requirements
- Bachelor's or Master's degree in Computer Science, Software Engineering, or a related field (or equivalent practical experience)
- 8+ years of professional software development experience, with strong depth across both frontend and backend systems
- Strong backend engineering skills with Node.js and TypeScript, including building production-grade APIs, authentication flows, and API versioning strategies
- Proven experience designing RESTful and WebSocket APIs for external partners or B2B platforms
- Strong frontend engineering skills with a modern framework (React preferred); ability to deliver complex, data-driven UIs with high attention to design fidelity
- Hands-on experience with cloud-native environments: Docker, Kubernetes, and GCP
- Strong SQL and database knowledge, including schema design, query optimization, and migrations
- Experience with performance optimization, caching strategies, and event-driven architectures
- Demonstrated use of AI coding agents (e.g., GitHub Copilot, Cursor, Claude Code) to meaningfully improve personal and team productivity
- Strong written and verbal communication skills; comfortable working with partner-facing and cross-functional teams, with the ability to take full ownership of projects from design through deployment, maintenance, and iteration

## Nice-to-Haves
- Familiarity with OAuth2, JWT, API key systems, or signed request authentication patterns
- Experience with financial, brokerage, or trading systems
- Experience with message queues or streaming platforms (e.g., Pub/Sub, Kafka)
- Experience building SDKs or developer toolchains for external integrators
- Familiarity with infrastructure-as-code tools such as Terraform
- Experience working in a regulated fintech, trading, or brokerage environment

## Compensation & Benefits
- Salary range: $140,000 - $190,000 USD + 10% annual target bonus
- 401k with 3.5% company match
- 18 days PTO per year + 7 paid holidays + 5 conditional holidays
- 1 Service Day annually
- Paid Parental Bonding Leave
- Health, Vision, Dental Coverage
- Life and Disability Insurance covered 100% by company

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