Senior Web Engineer, Perps

Polymarket is launching perpetual futures and we're looking for a Senior Web Engineer to own the frontend of our perps product. You'll build the trading interfaces that traders will rely on every day: order entry, position management, real-time market data, and the full suite of UI that makes a great perps exchange feel fast, reliable, and intuitive. This is a high-ownership role at the intersection of frontend product development, backend systems, performance, and reliability.

Responsibilities

Own and ship complex trading UI features end-to-end — order books, position panels, trade history, funding rates, liquidation displays, and more — making thoughtful tradeoffs between speed, quality, and long-term maintainability; Work closely with backend engineers to design APIs, reason through real-time data flows, and build reliable trading experiences on top of complex exchange systems; Partner with QA, TPM, product, and design to clarify requirements, manage launches, and improve product quality; Monitor dashboards, alerts, and user reports to identify and respond to issues quickly; work with backend and infrastructure teams during incidents to isolate root causes and follow through with fixes; Design and implement UI that handles live market data, streaming order books, and fast-moving prices in a way that feels responsive and accurate to traders; Build and improve the logs, metrics, alerts, dashboards, and error reporting that give the team visibility into frontend system performance; Identify meaningful technical debt, propose pragmatic refactors, and contribute to system design discussions that evolve our frontend architecture as the product scales

Requirements

3–5+ years of frontend web engineering experience; Strong hands-on experience with React, Next.js, TypeScript, and modern frontend development; Experience building trading, exchange, or financial product UIs — you understand the domain and know what a great trading interface requires; Strong frontend system design instincts across state management, data fetching, caching, performance, reliability, and maintainability; Experience working with real-time data: WebSockets, streaming APIs, or live market feeds; Strong debugging skills and experience responding to production issues; Comfortable working with backend engineers on APIs, data contracts, failure modes, and system behavior; High agency — you notice problems, propose solutions, and drive work to completion; Clear communicator during planning, launches, bugs, and incidents

Nice to have

Direct experience building UI for a perpetuals exchange or derivatives trading product; Frontend performance specialization, particularly around real-time data rendering; Experience in crypto, Web3, or adjacent financial infrastructure; Experience improving frontend observability, alerting, or reliability practices; Strong practical use of AI tools to improve engineering productivity

Benefits

Competitive salary & equity; Unlimited PTO; Full Health, Vision, & Dental coverage; 401k match; Hardware setup: new MacBook Pro, big display, & accessories