Frontend Engineer

We're looking for a Frontend Engineer to join Fullstack. Fullstack Trade is building the only unified front-end trading app for retail crypto – perps, cross-chain spot, and prediction markets under one portfolio margin balance. No bridging, no fragmentation. Founded by Flood, creator of Insilico Terminal ($900B CEX volume, 90% market share), and Robin, operated a leading CEX and on-chain HFT firm. Launching Jan/Feb 2027. You will - Build full-featured web apps and reusable UI libraries that are fast, accessible, and scalable. - Create high-performance interactive charts and real-time market data displays. - Drive performance: sub-second load times, advanced caching, latency-sensitive UX. - Own client-side architecture: REST and WebSocket integration, robust state management. - Set up CI/CD: automated builds, previews, testing, and rollbacks. Requirements - Strong React, TypeScript, and JavaScript; frontend-first, not backend-leaning full-stack. - Strong CSS and WAAPI experience. - Experience building real-time or latency-sensitive interfaces (trading, gaming, or similar). - Public, live deployed frontend work with polished visual quality. - Active GitHub with recent commits. - You actively trade crypto or perps and can name the venues and products you use. - US work authorization (TN supported). - On-site 5 days/week in SoHo, NYC. Stack - React, TypeScript, JavaScript, CSS, WAAPI, WebSockets, REST APIs, Jest, Vitest, Cypress, CI/CD. Nice to have - Frontend experience at a trading firm or exchange. - No degree required: bootcamp and self-taught engineers with strong projects are welcome. We offer - Up to $300k/year salary + equity. - Small, fully on-site team in SoHo, direct work with the founders.