Onsite

Fraud Detection Coding and a Payment System Design Round

AffirmSoftware Engineer · Onsite · Apr 2026

Four rounds total: one hour of coding + half an hour of behavioral questions + one hour of system design + half an hour of behavioral questions. The two behavioral rounds were just the standard questions. Coding round (the prompt was long, but not hard): Part 1: Live Fraud Detector (Debug Existing Function) Description One of Affirm's competitive edges is our ability to do credit underwriting and…

Shared by a candidate · reported Apr 2026. Interview formats change; use it as a guide, not a script.