Senior Web Engineer

Polymarket is looking for a Senior Web Engineer to own complex frontend features, improve reliability, and help us ship faster with confidence. You'll own major web surfaces end-to-end: from scoping and implementation through launch, monitoring, and production support. This is a high-ownership role at the intersection of frontend product development, backend systems, performance, and reliability. You should be comfortable shipping complicated React/Next.js features, debugging ambiguous production issues, and working across teams without needing hand-holding. We want someone who can move fast, make strong technical decisions, and help raise the quality bar for our frontend systems.

Responsibilities

Own and ship complex features end-to-end; Collaborate across the stack; Own reliability and incident response for your domain; Improve frontend observability; Raise the engineering bar; Tie technical work to outcomes

Requirements

3–5+ years of frontend web engineering experience; Strong hands-on experience with React, Next.js, TypeScript, and modern frontend development; Strong frontend system design instincts across state management, data fetching, caching, performance, reliability, and maintainability; Experience owning complex features from scoping through launch; 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; Product-minded: you care about user experience, not just implementation; Able to operate independently in a fast-moving, ambiguous environment; Clear communicator during planning, launches, bugs, and incidents

Nice to have

Frontend performance specialization; Experience with high-traffic, real-time, marketplace, trading, or financial products; Experience in crypto, Web3, or adjacent financial infrastructure; Experience building for WebViews or shared web/mobile surfaces; 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