Sr. Software Engineer in Test I

What you'll do:

NinjaTrader's web trading platform is how our customers trade futures—in real time, on live markets. As a Software Engineer in Test on the Web team, you will own quality for a dedicated product squad, embedded as a peer alongside engineers and product managers. Your job is not to gate releases—it is to build automation that makes confident, fast shipping the default. What you test and validate is what traders depend on.

In this role you will:

• Own quality end-to-end for an assigned product squad: from test strategy through release confidence
• Partner with developers and product managers at the design stage to define acceptance criteria and build testability into features from the start
• Design, develop, and maintain Playwright-based automated tests following Page Object Model (POM) patterns and the team's established automation architecture
• Write and maintain automation in TypeScript/JavaScript, contributing to shared frameworks and raising coverage standards across the team
• Collaborate with engineers on system design, API contracts, and application architecture to ensure observable, testable behavior
• Own your squad's test reliability—identify, analyze, and eliminate flakiness with the same urgency as a production bug
• Integrate tests into CI/CD pipelines using tagging strategies (e.g., smoke, regression) so every deployment ships with clear quality gates
• Apply AI-assisted development tools—code generation, test generation, failure analysis—to improve coverage and productivity
• Perform manual and exploratory testing where it adds signal that automation cannot, and convert findings into durable automated coverage
• Contribute to junior QA team members' growth through code reviews, pairing, and direct feedback
• Uphold NinjaTrader SDLC and information security standards

What you'll need:

• 5+ years of experience in QA engineering and test automation
• Strong hands-on experience with Playwright
• Solid experience writing automation in TypeScript or JavaScript
• Experience building and maintaining tests using Page Object Model or modular test architecture
• Demonstrated experience working with engineers on testability-by-design—shaping application architecture and API design to support reliable automation
• Experience integrating automated tests into CI/CD pipelines
• Strong understanding of test design principles and the software testing life cycle
• Proven proficiency with AI-assisted engineering tools (e.g., code generation, test generation, debugging assistants) applied responsibly in a production QA context
• Ability to own quality for a product area independently, with minimal oversight
• Strong communication skills—comfortable as a peer to engineers and product managers

Bonus points for:

• Experience testing real-time or data-intensive web applications
• API automation testing experience
• Accessibility testing knowledge (WCAG standards)
• Experience in trading platforms or fintech

Compensation:

The salary range for this role will be $82,000.00 - $132,000.00 USD. In addition, this position will also receive an annual target bonus of 10%. 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. We are not open to remote candidates for this role

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