Senior Backend Engineer - Real-Time Fraud Platform

Perplexity's fraud prevention team designs and operates a real-time decisioning platform to protect products, users, and infrastructure from abuse. You will own services end to end, collaborating with fraud analysts, ML engineers, and product teams to deliver scalable, reliable fraud detection across sign-up, authentication, payments, API usage, and features.

The role emphasizes shipping incrementally, monitoring outcomes, and maintaining robust production operations with observability and