Head of Fraud (Fintech)

Location: New York, United States; on-site.

Base salary: $500,000–$600,000 annually, plus equity and benefits.

Company

Polymarket operates a prediction market where trust across accounts, deposits, and trades is central to the product.

What you will do

• Own the fraud risk framework, risk appetite, assessment, typology library, roadmap, exposure reporting, and governance updates.
• Partner with Product and Engineering to assess risk and ship preventative controls, including identity and device signals, step-up authentication, velocity and limit rules, and payment and withdrawal checks.
• Build detective controls using monitoring rules, ML and AI models, anomaly detection, alerting, and case management; continuously tune them against losses, false positives, and customer friction.
• Lead investigations from triage through root cause and closure, ensuring findings from monitoring, audits, regulatory exams, and incidents have owners, fixes, and deadlines.
• Build and lead a team of analysts, investigators, and fraud data specialists while influencing Product and Engineering roadmaps.
• Work with Compliance, Legal, Data, Payments, Customer Support, and Security; manage fraud vendors and tooling.

Requirements

• 10+ years of fraud experience in fintech, payments, banking, crypto, trading, online gaming, or other high-volume digital platforms, including at least five years in leadership with direct accountability for prevention, investigations, operations, and measurable outcomes.
• Exceptional influence, with a record of getting fraud controls shipped by Product and Engineering teams not directly managed.
• Experience building preventative and detective controls from scratch and demonstrating reduced losses without harming legitimate customers.
• Hands-on experience with both first-party and third-party fraud, including account takeover, identity fraud, payment fraud, chargebacks, promotion abuse, multi-accounting, phishing, scams, and organized fraud rings.
• Experience using AI and automation for detection models, investigation tooling, case triage, and daily productivity, with judgment about when models outperform rules.
• Understanding of the balance between losses, customer friction, and growth, with the ability to quantify trade-offs.
• Knowledge of fraud governance, documentation, testing, escalation, regulatory expectations, and exam defense.
• Ability to drive outcomes quickly, prioritize effectively, and close issues in a fast-moving, high-growth environment.
• Comfort working directly with SQL and data teams to size problems and measure control performance.

Nice to have

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

Culture & Benefits

• On-site work in New York.
• Competitive salary, equity, and benefits.
• Unlimited paid time off.
• Full health, vision, and dental coverage.
• 401(k) match.
• New MacBook Pro, large display, and accessories.

Hiring process

• Influence is assessed at every interview stage.