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Anti-Fraud & Abuse Engineer

Perplexity

Perplexity

Accounting & Finance
San Francisco, CA, USA
USD 250k-350k / year + Equity
Posted on Nov 5, 2025

Location

San Francisco

Employment Type

Full time

Location Type

Hybrid

Department

Security

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

  • Generate actionable intelligence reports on new attack vectors, vulnerabilities, and threat actor tactics targeting LLM systems

  • 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

  • Familiarity with adversarial tactics, techniques, and procedures (TTPs) targeting AI systems

  • Excellent communication skills, able to present to both technical and non-technical audiences

Our cash compensation range for this role is $250,000 - $350,000.

Final offer amounts are determined by multiple factors, including, experience and expertise, and may vary from the amounts listed above.

Equity: In addition to the base salary, equity may be part of the total compensation package.
Benefits: Comprehensive health, dental, and vision insurance for you and your dependents. Includes a 401(k) plan.