Member of Technical Staff (Software Engineer, Fraud Prevention)New
The opportunity
Perplexity's fraud prevention team protects our products, users, and infrastructure from fraud and abuse across the whole lifecycle: sign-up, authentication, payments, API usage, and product features. We build and operate a real-time decisioning platform together with the…
What you'll do
Design, build, and operate high-throughput, low-latency backend services for fraud detection and prevention
Build data pipelines and real-time feature computation that power detections and ML models
Collect and process trust signals
Integrate fraud decisions into product, auth, and payment flows across Perplexity
Own reliability of production services: observability, alerting, safe rollouts, incident response
Build internal tooling for investigation, enforcement, and auditability
What they're looking for
- Partner with fraud analysts to turn new abuse patterns into production detections quickly
- + years building and operating high-throughput, latency-sensitive backend systems in production
- Strong systems programming skills; Rust, Go, or C++ experience preferred (we write Rust)
- Hands-on experience with Kubernetes, Terraform and cloud infrastructure
