Head of Payment Security & Transaction Integrity
Remote
Job Summary
Senior leader to establish and own the Payment Security and Transaction Integrity function for Coins. Responsible for protecting the integrity of payment flows across QRPH, Wallet, Merchant Payments, Crypto-Fiat rails, and future payment products; focus areas include business logic vulnerabilities, payment fraud, transaction manipulation risks, and adversarial testing of payment systems. Key duties include security architecture review, threat modeling, secure transaction integrity standards, source-of-truth frameworks, adversarial testing programs (Payment Red Team), incident response leadership, root-cause analysis and governance, and cross-functional collaboration with Fraud, Risk, Operations, Compliance, and Engineering to define monitoring, controls, and escalation frameworks; governance through a Payment Security Review Board and ongoing risk-management processes.
Required Qualifications
- 8+ years in payments, fintech, acquiring, banking, or transaction risk
- Deep understanding of payment systems, merchant acquiring, settlement, reconciliation, and transaction processing
- Experience with payment fraud, transaction abuse, or payment security
- Strong understanding of business logic vulnerabilities and adversarial thinking
- Ability to work across Engineering, Risk, Compliance, and Operations teams
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