QA Engineer

• Lead penetration testing engagements focused on payment abuse, transaction manipulation, and business logic exploitation
• Design and execute automated attack simulations to test our defenses against carding and BIN attacks, credential stuffing and account takeovers, checkout and payment flow abuse, API-level enumeration and fraud
• Build custom tooling and frameworks to mimic the behavior of real-world fraudsters and cybercriminals
• Partner with fraud engineering, product security, and risk teams to identify weak points in our controls, detection systems, and architecture
• Conduct threat modeling and red teaming exercises related to payments, authentication, and user account abuse
• Document findings in technical reports with clear risk impact, exploitability, and remediation guidance
• Mentor junior testers and contribute to a culture of security innovation and continuous improvement

Senior Product Security Engineer, Pen Tester

QA Automated Engineer III

Senior Quality Assurance Engineer – Billing Platform

QA Engineer

Data Quality Assurance Specialist