Staff Engineer (Anti-Fraud)

As a Staff Engineer on our Anti-Fraud Engineering team, you'll take ownership of the systems that protect millions of RecargaPay users and merchants from fraud in real time. You'll design and evolve the low-latency decisioning platform that scores transactions, enforces fraud rules, and feeds signals back to risk models — all while keeping genuine payments fast and frictionless. This is a high-impact, high-autonomy role at the intersection of backend engineering, risk, and compliance, where your technical decisions directly shape RecargaPay's loss rates and customer trust.

Responsibilities

• Lead the architecture of real-time fraud-decisioning services that score transactions, logins, and account changes within tight latency budgets (sub-second SLAs).
• Own the evolution of the fraud rules engine, including rule versioning and safe rollout (shadow/canary), and build tooling that lets Risk and Fraud Ops analysts test hypotheses without waiting on engineering.
• Partner with Data Science to productionize fraud-detection models — building low-latency feature pipelines and serving infrastructure that keep model inputs fresh and auditable.
• Design event-driven pipelines (Kafka) that stream transaction, device, and behavioral signals across services with strict ordering, idempotency, and exactly-once guarantees where required.
• Build the audit trail and explainability layer behind every fraud decision, so outcomes can be