Security Engineer III — Anti-Bot
Walmart · Sunnyvale, USA
CURRENTNov 2025 – Present
- —Led response to high-severity abuse events with direct financial impact in the tens of millions of dollars.
- —Detected and neutralized bot-driven threats: credential stuffing, account creation abuse, card testing, fake review injection, DDoS.
- —Blocked billions of malicious scraping requests via detection rule tuning, behavioral fingerprinting, and rate-limiting across CDN/WAF (Akamai, PerimeterX).
- —Analyzed bot traffic patterns to continuously improve detection and reduce false positives across high-volume e-commerce endpoints.
- —Collaborated across fraud, product, and engineering to prioritize abuse vectors and drive platform-level mitigation.
AkamaiPerimeterXCDN/WAFBehavioral FingerprintingRate LimitingCredential Stuffing