System Design

Design a system for real-time fraud detection in financial transactions.

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1 answer published. Last candidate submission on Jun 25 2026, 8:39am PDT. Interview question asked to Technical Program Managers, Site Reliability Engineers, Engineering Managers and other roles interviewing at OpenDoor, Fujitsu, MongoDB and other companies. Original question asked: Design a system for real-time fraud detection in financial transactions.. Question last reported by a candidate interviewing at Agoda for a Machine Learning Engineer interview on Jul 2 2026, 1:48pm PDT.