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Polymarket is the world's largest prediction market platform, enabling users to trade on outcomes across politics, economics, sports, culture, and current affairs. The platform operates as a peer-to-peer marketplace with no centralized house, aggregating diverse opinions into transparent, market-based probabilities. With $21B traded in 2025, Polymarket is rapidly growing and positioning itself as a beacon of truth in global media.
The Senior Investigation Analyst will own market integrity investigations end-to-end, protecting the platform from insider trading, market manipulation, spoofing, order-book abuse, coordinated multi-account activity, bot and automated-trading abuse, sanctions and illicit-finance exposure, and account takeover and fraud. This role serves as the primary point of contact for law enforcement and regulatory inquiries into suspicious activity.
Key responsibilities include: investigating insider trading, coordinated wallet activity, spoofing, and other market integrity matters from initial signal through documented findings; tracing wallets, funding flows, and transaction history using tools like Chainalysis to identify coordination and test hypotheses; reviewing spoofing, layering, and order-book manipulation using trade-surveillance tooling alongside on-chain evidence; evaluating and responding to subpoenas and legal process under binding deadlines; writing investigative reports that withstand scrutiny from leadership, law enforcement, and outside counsel; and staying current on emerging manipulation and fraud patterns in prediction markets and blockchain ecosystems.
The ideal candidate brings 5–7+ years of investigative experience in trade surveillance, market structure, regulation, blockchain forensics, financial crimes, law enforcement, or comparable case-building work. Required expertise includes working knowledge of order-book mechanics and manipulation typologies (spoofing, layering, wash trading) and/or blockchain analysis and on-chain typologies. Direct experience with blockchain analysis tools (Chainalysis, TRM Labs, Elliptic) or trade-surveillance platforms (Eventus/Validus, Nasdaq SMARTS) is essential. The role requires strong judgment evaluating legal and regulatory requests under real deadlines, comfort with ambiguity, and a track record of building defensible cases from limited initial indicators. Bonus qualifications include prediction market or crypto-native platform experience, SQL or Python proficiency for hypothesis testing, and prior law enforcement or regulatory liaison experience.
