Own the development, maintenance, and evolution of NinjaTrader’s design system, including UI components, patterns, tokens, and documentation; this includes defining system standards, architectural direction, and long-term technical strategy
Act as the technical authority for how designs are translated into production UI, partnering with Design while maintaining final responsibility for engineering quality, performance, and maintainability
Make and defend tradeoffs between consistency, flexibility, velocity, and performance on behalf of the broader engineering organization
Build and maintain a component library using modern frontend technologies, ensuring components are accessible, performant, and easy to consume across teams
Establish and enforce best practices for consistency, accessibility (WCAG), responsiveness, and cross-browser compatibility
Collaborate with other frontend engineers to support adoption of the design system, guide implementation, and continuously improve developer experiences
Influence adoption through technical leadership rather than direct reporting authority
Design scalable CSS and styling architectures (e.g., tokens, theming, variables) that support multiple products, themes, and future growth
Create and maintain comprehensive documentation, examples, and usage guidelines for designers and engineers
Work closely with Product, Design, and Engineering leadership to align the design system roadmap with business and product needs

Requirements

8+ years of professional experience in frontend engineering, design engineering, or design systems development
Demonstrated experience building or leading a design system from early or intermediate stages, including architectural decisions, adoption challenges, and long-term maintenance
Strong expertise in modern CSS and styling approaches (CSS-in-JS, CSS Modules, Tailwind, or similar), including theming and design tokens
Proven experience partnering deeply with designers and translating design tools (e.g., Figma) into high-fidelity, production-ready components
Strong knowledge of web accessibility standards (WCAG 2.2 AA) and experience building inclusive, accessible interfaces
Experience supporting shared systems used by multiple teams or products, balancing consistency with flexibility
Ability to balance design fidelity, performance, and accessibility in production systems
Familiarity with modern frontend tooling and workflows (Storybook, Vite/Webpack, Yarn/NPM, testing frameworks)

Benefits

Health, Vision, Dental Coverage
401k with 3.5% Company Match
Generous PTO
7 Paid Holidays Annually + 5 Conditional Holidays Annually
1 Service Day Annually
Paid Parental Bonding Leave
Life and Disability Insurance Covered 100% by NinjaTrader

Applicant Tracking System Keywords

Tip: use these terms in your resume and cover letter to boost ATS matches.

Hard Skills & Tools

frontend engineeringdesign systems developmentmodern CSSCSS-in-JSCSS ModulesTailwindweb accessibility standardsWCAG 2.2 AAcomponent library developmenttheming

Soft Skills

technical leadershipcollaborationtradeoff analysiscommunicationinfluenceproblem-solvingdocumentationguidanceadaptabilitybalancing design fidelity