Realtime Trading Frontend Engineer (React/TypeScript)

Fullstack; New York, Northern (NY, KY); Hybrid; USD 100,000 - 160,000; Full time

Job summary

Fullstack is seeking a Frontend Engineer to build and scale the core user experience of a fast, clear retail trading platform. You will own major frontend systems from architecture to performance, turning complex real-time market data into intuitive interfaces for traders.

You will design reusable UI libraries, develop high-performance visualizations, and work with designers and backend engineers to ship rapidly. In-person collaboration in the United States is expected.

Qualifications

• 2+ years of professional frontend experience.
• Expert proficiency in TypeScript, JavaScript and React.
• Strong UI sense with CSS and WAAPI experience.
• Performance-minded with browser rendering and profiling tools.
• Experience with testing using Jest, Vitest or Cypress.
• Familiarity with REST APIs, WebSocket streams and CI/CD pipelines.
• Able to collaborate closely with in-person teams in the US.

Responsibilities

• Build and scale core frontend systems end-to-end.
• Develop high-performance charts and real-time visualizations.
• Optimize speed and reliability with caching and perf tuning.
• Integrate REST APIs and WebSocket streams into UI.
• Configure CI/CD pipelines for automated builds and rollbacks.

Skills

TypeScript

JavaScript

React

CSS

WAAPI

REST APIs

WebSocket

Lighthouse

Chrome DevTools

Jest

Vitest

Cypress

CI/CD

Performance profiling

Tools

Jest

Vitest

Cypress

Lighthouse

Chrome DevTools

Job description

Fullstack is seeking a Frontend Engineer to build and scale the core user experience of a fast, clear retail trading platform. You will own major frontend systems from architecture to performance, turning complex real-time market data into intuitive interfaces for traders.

You will design reusable UI libraries, develop high-performance visualizations, and work with designers and backend engineers to ship rapidly. In-person collaboration in the United States is expected.