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Design a messaging platform like WhatsApp that enables users to send and receive messages in 1-on-1 and group chats, with support for multiple devices, online/offline modes, and message delivery status.
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Hello Interview · 1 record
Meta
Design WhatsApp
Reported Mar 22, 2026 · 12 source reports
MANAGER, MID_LEVEL, SENIOR
Source snapshot: Nov 12, 2026
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