Senior Web Engineer

Polymarket

Senior Web Engineer owning complex frontend features for Polymarket's prediction market platform. Collaborating across teams to enhance product quality and reliability.

Posted 4/29/2026full-timeNew York City • New York • 🇺🇸 United StatesSeniorWebsite

Tech Stack

Tools & technologies

JavaScriptNext.jsReactTypeScriptWeb3

About the role

Key responsibilities & impact

Own and ship complex features end-to-end. Build and launch web features across Polymarket's core product surfaces, making thoughtful tradeoffs between speed, quality, architecture, and long-term maintainability.
Collaborate across the stack. Work closely with backend engineers to design APIs, reason through data flows, and build reliable user experiences on top of complex systems. Partner with QA, TPM, product, and design to clarify requirements, manage launches, and improve product quality.
Own reliability and incident response for your domain. 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, ship mitigations, and follow through with fixes and prevention work.
Improve frontend observability. Build and improve the logs, metrics, alerts, dashboards, and error reporting that give the team visibility into how our frontend systems are performing.
Raise the engineering bar. Identify meaningful technical debt, propose pragmatic refactors, and contribute to system design discussions that evolve our frontend architecture as the product scales. Lead by example through strong code reviews, clear communication, and high-quality execution.
Tie technical work to outcomes. Connect your work to measurable results – performance, reliability, product quality, and conversion – and help break down ambiguous product requirements into shippable engineering work.

Requirements

What you’ll need

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
(Plus) Frontend performance specialization
(Plus) Experience with high-traffic, real-time, marketplace, trading, or financial products
(Plus) Experience in crypto, Web3, or adjacent financial infrastructure
(Plus) Experience building for WebViews or shared web/mobile surfaces
(Plus) Experience improving frontend observability, alerting, or reliability practices
(Plus) Strong practical use of AI tools to improve engineering productivity

Benefits

Comp & perks

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

ATS Keywords

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Applicant Tracking System Keywords

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Hard Skills & Tools

ReactNext.jsTypeScriptfrontend system designstate managementdata fetchingcachingperformancereliabilitymaintainability

Soft Skills

debugginghigh agencyproduct-mindedindependent operationclear communication