DeFi Market Surveillance Analyst

Polymarket is a large onchain prediction market platform where every trade settles on a blockchain and markets also run on a traditional order book. This role sits on the Global Intelligence & Investigations team, which keeps Polymarket's markets fair by detecting and investigating insider trading, market and oracle manipulation, coordinated wallet activity, automated-trading abuse, sanctions exposure, and fraud, as well as handling related law enforcement and regulatory requests. The analyst combines on-chain wallet tracing and blockchain analytics with classic order-book trade surveillance, working alongside a senior investigator to keep the daily investigative caseload moving to documented, defensible resolutions.

• Triage incoming alerts and referrals daily against documented investigation thresholds
• Trace flagged wallets across chains, bridges, and funding flows to a documented disposition
• Review order-book and execution data for spoofing, layering, wash trading, and coordinated activity
• Investigate insider trading, oracle/resolution manipulation, bot abuse, sanctions and illicit-finance risk
• Write queries and propose new detection signals based on observed patterns
• Handle law enforcement and regulatory requests against binding deadlines

• 3+ years in trade surveillance, on-chain investigations, blockchain analytics, or financial crime investigation
• Hands-on wallet-tracing experience across blockchains, bridges, and address clustering
• Working knowledge of order-book manipulation typologies (spoofing, layering, wash trading)
• Proficiency in SQL or a comparable query language
• Strong written communication for case documentation that holds up to legal scrutiny
• Familiarity with prediction markets and crypto-native platforms

This listing was aggregated by an automated job-scraping process from the company's official careers page and has not been independently rewritten or verified beyond the source posting.