Lead Performance Web Engineer

About the Company

Polymarket is the world's largest prediction market platform. We enable individuals to express views on real-world events by trading on outcomes across politics, economics, sports, culture, and current affairs.

Responsibilities

• Own web performance end-to-end, including load times, rendering performance, and runtime efficiency
• Set technical direction by defining architecture, standards, and tooling for caching, rendering, and edge delivery
• Optimize the critical rendering path, including SSR, hydration, code splitting, and asset delivery
• Design and maintain caching and CDN strategies to minimize latency
• Build performance observability using real user monitoring and Core Web Vitals tracking
• Establish performance benchmarks and budgets across the engineering organization

Requirements

• Deep experience in web performance engineering at significant scale (billions of page loads)
• Expertise in rendering, caching, CDN configuration, bundle optimization, and Core Web Vitals
• Proficiency in JavaScript and TypeScript
• Strong understanding of browser engines, V8 runtime, and the network layer
• Experience with real user monitoring and synthetic performance testing
• Proven technical leadership experience influencing engineering teams
• Measurement-driven approach using profiling and instrumentation

Preferred Qualifications

• Experience with Next.js and React
• Experience with modern SSR/SSG rendering strategies at scale
• Familiarity with edge computing, worker runtimes, or CDN-level programmability

Benefits

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