Perplexity is seeking a highly skilled, experienced and hands-on Anti Fraud & Abuse Engineer to join our dynamic security team, revolutionizing the way people search and interact with the internet. You will be responsible for designing, implementing, and operating cutting-edge monitoring and detection systems to identify and prevent fraudulent behaviors and abuse of our products and services.

Responsibilities

• Design, build, and operate monitoring and detection systems to identify and prevent fraudulent behaviors and abuse
• Perform adversary hunting to detect abuse and misuse of our products and services
• Analyze how our products and services are being misused or abused
• Track and mitigate cost impacts of fraud and abuse across our technology stack
• Research and anticipate emerging abuse techniques to stay ahead of evolving threats
• Build and maintain relationships with external threat intelligence partners and industry communities
• Establish best practices, tools, and processes for our fraud and abuse detection program

Qualifications

• Experience designing, implementing, and operating fraud detection, abuse prevention, or security monitoring systems
• Background in security, adversarial machine learning, threat intelligence, or fraud investigations
• Strong data analysis skills, able to identify patterns and anomalies within large datasets
• Understanding of both technical and behavioral signals to support effective fraud prevention strategies
• Excellent communication skills, able to present to both technical and non-technical audiences