Frontend Engineer

Fullstack • New York City, NY

2d • Onsite

About The Position

As a Frontend Engineer at Fullstack, you will build and scale the core user experience for a retail trading platform designed for speed, clarity, and trust. You will own major frontend systems end to end, from architecture to performance, translating complex real-time market data into intuitive and empowering interfaces for everyday traders. You will work closely with designers and backend engineers to ship frequently, refine the product, and deliver a trading experience for fast-moving markets.

Requirements

• At least 2 years of professional experience building modern frontend applications.
• Expert proficiency in TypeScript, JavaScript, and React.
• Strong CSS and WAAPI experience, with a strong focus on user interaction and making complex concepts intuitive.
• Deep understanding of browser rendering, the DOM, and performance profiling tools such as Lighthouse and Chrome DevTools.
• Experience writing maintainable test suites using tools such as Jest, Vitest, or Cypress.
• Ability to thrive in high-bandwidth, in-person engineering environments.
• Must be authorized to work in the United States.

Responsibilities

• Design, build, and maintain full-featured web applications and reusable UI libraries that are fast, accessible, and scalable.
• Develop high-performance interactive charts and real-time visualizations to help users make informed trading decisions.
• Optimize application speed and reliability using advanced caching strategies to achieve sub-second load times.
• Integrate complex REST APIs and WebSocket streams while managing robust client-side cached state.
• Configure and maintain CI/CD pipelines for automated builds, previews, testing, and seamless rollbacks.

What This Job Offers

• Job Type: Full-time
• Career Level: Mid Level
• Education Level: No Education Listed