System Design
Design a messaging system like WhatsApp.
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2 answers published. Last candidate submission on Aug 26 2026, 4:10pm PDT. Interview question asked to Software Engineers, Machine Learning Engineers, Production Engineers and other roles interviewing at nCino, Proofpoint, Netflix and other companies. Original question asked: Design a messaging system like WhatsApp.. Question last reported by a candidate interviewing at Pendo for a Production Engineer interview on Aug 22 2026, 8:42am PDT.