Senior Data Scientist / Analyst, Risk

About the Role

Polymarket is looking for a Senior Data Scientist / Analyst, Risk to find the patterns that indicate abuse on our platform: fake and duplicate signups, farmed bonuses, collusive or manipulative trading, etc, and to turn what you find into controls that hold. You'll work closely with product and compliance, sitting between the data and the decisions about who gets to trade and under what conditions.

This is a role for someone who enjoys adversarial problems. The behavior you're looking for is actively trying not to be found, and the signal is usually in how accounts act together rather than in any single field. You'll be expected to build the detection, quantify the exposure, and make a clear recommendation about what to do about it. And you'll do it in a fast-moving environment where every new product opens new abuse vectors.

What You'll Do

• Investigate and quantify abuse across the funnel, including multi-accounting and fake signups, bonus and promotion farming, wash trading, collusion, and market manipulation

• Build detection logic that separates genuine users from coordinated behavior, combining on-chain, device, and behavioral signals rather than relying on any one of them

• Turn one-off investigations into monitoring, including recurring reporting and alerting that surfaces new patterns without someone having to go looking