System Design

Build a multi-feature messaging app 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, Software Engineers and other roles interviewing at Cloudera, Recruit Holdings, Avant and other companies. Original question asked: Build a multi-feature messaging app like WhatsApp.. Question last reported by a candidate interviewing at Digit for a Site Reliability Engineering Manager interview on Jul 26 2026, 1:49pm PDT.