Head of Fraud

The role

The Head of Fraud will own the fraud risk end to end by defining strategy and building preventative and detective controls. This person will manage a team of analysts, investigators, and data specialists to address first-party and third-party fraud.

What you will do

• Own the fraud risk framework, appetite, and roadmap.
• Maintain a fraud risk assessment and typology library.
• Report fraud exposure, losses, and emerging threats to leadership.
• Partner with Product and Engineering to assess risk for new products and features.
• Define and implement preventative and detective controls.
• Tune controls against loss rates, false positives, and customer friction.
• Own investigations from triage to root cause and closure.
• Build and lead a fraud team of analysts, investigators, and data specialists.
• Select and manage fraud vendors and tooling.
• Work with Compliance and Legal on regulatory expectations and exam readiness.

Required qualifications

• 10+ years of experience in fraud within fintech, payments, banking, crypto, trading, online gaming, or other high-volume digital platforms.
• At least five years in leadership with direct accountability for fraud prevention, investigations, operations, and measurable outcomes.
• Track record of building preventative and detective controls from scratch.
• Hands-on experience with both first-party and third-party fraud.
• Use of AI and automation for detection models, investigation tooling, and case triage.
• Ability to balance loss, friction, and growth.
• Knowledge of regulatory expectations for a fraud program.
• Comfortable in a fast-moving, high-growth environment.
• Comfortable working directly in SQL and with data teams.

Nice to have

• Experience at a regulated exchange, derivatives venue or broker, or a crypto platform with on-chain and fiat flows.
• Familiarity with blockchain analytics and wallet-level risk signals.
• Exposure to market abuse and trade surveillance.
• Experience building fraud capability across multiple jurisdictions.
• Hands-on experience shipping LLM or agent-based tooling for investigations.

Benefits

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

About the company

Polymarket is the world's largest prediction market.