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Design a multi-device calendar application

Last updated: Mar 29, 2026

Quick Overview

This question evaluates system design competency in scalable backend architecture, data modeling for time-range queries, synchronization and conflict-resolution for multi-device state, and handling calendaring complexities such as time zones, recurring events, and offline edits.

  • medium
  • OpenAI
  • System Design
  • Software Engineer

Design a multi-device calendar application

Company: OpenAI

Role: Software Engineer

Category: System Design

Difficulty: medium

Interview Round: Technical Screen

Quick Answer: This question evaluates system design competency in scalable backend architecture, data modeling for time-range queries, synchronization and conflict-resolution for multi-device state, and handling calendaring complexities such as time zones, recurring events, and offline edits.

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|Home/System Design/OpenAI

Design a multi-device calendar application

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OpenAI
Nov 9, 2025, 12:00 AM
mediumSoftware EngineerTechnical ScreenSystem Design
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