Full-Time
Senior Web Engineer
Polymarket
201-500 employees
Decentralized prediction market with crypto trading
No salary listed
New York, NY, USA + 1 more
More locations: United States
Hybrid
 Software Engineering (1) |
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- The candidate must have 3–5+ years of frontend web engineering experience.
- The candidate must have strong hands-on experience with React, Next.js, TypeScript, and modern frontend development.
- The candidate must have strong frontend system design instincts across state management, data fetching, caching, performance, reliability, and maintainability.
- The candidate must have experience owning complex features from scoping through launch.
- The candidate must have strong debugging skills and experience responding to production issues.
- The candidate must be comfortable working with backend engineers on APIs, data contracts, failure modes, and system behavior.
- The candidate must be able to operate independently in a fast-moving, ambiguous environment.
- The candidate must communicate clearly during planning, launches, bugs, and incidents.
- Own and ship complex web features end-to-end across Polymarket's core product surfaces, making thoughtful tradeoffs between speed, quality, architecture, and long-term maintainability.
- Work closely with backend engineers to design APIs, reason through data flows, and build reliable user experiences on top of complex systems.
- Partner with quality assurance, technical program management, 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, ship mitigations, and follow through with fixes and prevention work.
- Build and improve the logs, metrics, alerts, dashboards, and error reporting that provide visibility into frontend system performance.
- Identify meaningful technical debt, propose pragmatic refactors, and contribute to system design discussions that evolve frontend architecture as the product scales.
- Lead by example through strong code reviews, clear communication, and high-quality execution.
- Connect technical work to measurable results in performance, reliability, product quality, and conversion.
- Break down ambiguous product requirements into shippable engineering work.
- 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 artificial intelligence tools to improve engineering productivity.
Polymarket operates a decentralized prediction market where users trade crypto against outcomes of real-world events, from elections to sports. Bets are placed by buying and selling shares tied to event results; outcomes are resolved by decentralized oracles and rewards are paid in cryptocurrency. The platform blends a familiar trading interface with blockchain-based transparency and immutability, and it now operates in the U.S. through the acquisition of QCX, a CFTC-licensed exchange. Its goal is to offer hedging and speculative opportunities on real-world events while combining crowd-sourced forecasting with regulated crypto trading in the United States.
Company Size
201-500
Company Stage
Growth Equity (Venture Capital)
Total Funding
$3.9B
Headquarters
New York City, New York
Founded
2018
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Simplify's Take
What believers are saying
- Polymarket sought over $20 billion valuation on August 4, 2026, after a $15 billion round.
- CNBC said annualized revenue topped $1 billion after the May 2026 U.S. exchange launch.
- NFL season, midterms, and Pokémon markets expand volume beyond elections and crypto.
What critics are saying
- Baltimore sued Polymarket on August 13, 2026, alleging illegal sports gambling and deception.
- JPMorgan cut Polymarket in October 2025, exposing fragile banking access and funding operations.
- CFTC scrutiny, state lawsuits, and gambling classification threats can block the U.S. expansion.
What makes Polymarket unique
- Polymarket paired crypto-native trading with QCX's CFTC licenses in July 2025.
- Shayne Coplan says on-chain activity and in-house surveillance make Polymarket unusually transparent.
- Intercontinental Exchange invested $600 million in April 2026, validating Polymarket's market position.
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Benefits
Health Insurance
Dental Insurance
Vision Insurance
Unlimited Paid Time Off
401(k) Company Match
Growth & Insights and Company News
6 month growth
↑ 3%1 year growth
↑ 4%2 year growth
↓ -6%Polymarket employs a former FBI officer to monitor its traders full-time, chief executive Shayne Coplan told US regulators on Thursday. Speaking at the Commodity Futures Trading Commission's Innovation Advisory Committee, Coplan said the staffer built custom surveillance software in-house. The company has handed 315 or more wallet records to authorities and made 90 or more account referrals, resulting in two arrests. In April, the CFTC charged Army Master Sgt. Gannon Ken Van Dyke, who made roughly $404,000. In May, Google engineer Michele Spagnuolo was charged over allegedly clearing about $1.2 million. Coplan defended the surveillance, saying Polymarket is "the least anonymous financial market of all time" because all activity is public and on-chain.
JPMorgan Chase terminated its banking relationship with prediction market platform Polymarket last October due to regulatory concerns, according to the Wall Street Journal. However, connections persist between the companies. Polymarket's CEO has spoken at three JPMorgan events over the past year, and in April the bank offered wealth-management clients access to Polymarket's Series E round, which valued the company at $14.5 billion. The development comes as JPMorgan faces scrutiny over alleged debanking practices. President Donald Trump has ordered regulators to investigate whether banks improperly closed customer accounts for political reasons. Donald Trump Jr. holds a Polymarket stake through his investment fund 1789 Capital. Polymarket is reportedly in early talks to raise approximately $1 billion at a valuation above $20 billion, according to Bloomberg.
Polymarket has launched prediction markets for Pokémon cards, allowing traders to wager on whether individual cards and sealed products will gain or lose value. The contracts track ungraded prices from Collectr, a collectibles pricing app. More than a dozen Pokémon markets now trade on the platform. Most lean bearish, reflecting expectations of further price declines after buyer attention shifted to newer sets in late July and early August. Volumes remain small, ranging from a few hundred to a few thousand dollars per contract. The Mega Gengar ex contract leads with roughly $2,300 in volume. The move expands Polymarket's offerings beyond politics and crypto into pop culture. The platform files card contracts under its culture and art category, alongside markets on CryptoPunks floor prices and Banksy street art. Baltimore sued Polymarket on Thursday, alleging it operates an unlicensed sportsbook.
Polymarket has acquihired Turf's six-person team, bringing the builders of the live sports prediction app in-house to work on its US platform. Turf launched on the App Store in early 2026, offering real-time NFL prediction games with play-by-play calls and live chats. The two companies previously partnered in April 2026 to integrate prediction markets into Turf's product. Polymarket described Turf as "beautifully designed & built by a team that already understood sports prediction markets." The acquisition comes during a broader hiring push at Polymarket, which has added compliance and growth executives this month. The timing precedes the NFL season and November's midterm elections, both expected to drive significant platform volume.
Polymarket has appointed Travis VanderZanden as Chief Growth Officer to expand its prediction market platform beyond elections and sports. VanderZanden announced the role on LinkedIn, bringing experience from Uber, Lyft, and as founder of electric scooter company Bird. His background focuses on scaling two-sided marketplaces. VanderZanden said many still view prediction markets primarily for elections or sporting events, but believes the potential market is much larger. Polymarket allows users to trade contracts on real-world events across politics, economics, financial markets, weather and other topics. The appointment signals Polymarket's push to reach a wider audience. However, expansion comes amid regulatory scrutiny. On 11 August, the New York City Council opened an investigation into Polymarket and other platforms over marketing practices and potential targeting of younger users. The CFTC has also warned prediction markets about gambling concerns.