Full Time

Sr. Staff Product Security Engineer

Posted by Blackhawk Network • Coppell, Texas, United States

📍 Coppell, Texas 🕒 March 03, 2026

About the Role

Overview

:

We’re hiring a Sr Staff Product Security Engineer / Pen Tester to help defend our fintech platform against large-scale payment fraud, carding attacks, and other financially motivated threats. You’ll lead offensive security assessments targeting our transaction systems, authentication flows, and APIs — with a heavy focus on automation and scalability. Your work will directly impact our fraud defenses, detection strategy, and customer trust.

This is a highly technical, hands-on role for someone who thrives in a fast-paced, high-stakes fintech environment.

Responsibilities:

  • 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 attacksCredential stuffing and account takeoversCheckout and payment flow abuseAPI-level enumeration and fraud
  • Build cu...
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