System Design

Design a messaging system like WhatsApp.

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1 answer published. Last candidate submission on Apr 28 2026, 11:13pm PDT. Interview question asked to Production Engineering Managers, Engineering Managers, Site Reliability Engineering Managers and other roles interviewing at Instacart, Lattice, Ticketmaster and other companies. Original question asked: Design a messaging system like WhatsApp.. Question last reported by a candidate interviewing at Faire for a Site Reliability Engineering Manager interview on May 13 2026, 6:17pm PDT.