Slack Interview Questions and Guide

Real-time messaging channels, WebSocket fanout, search indexing at scale, rate limiting, and enterprise organization data models.

The Slack interview loop

1. Recruiter screen
2. Technical screen (coding)
3. Onsite: 2 coding rounds, 1 system design (messaging / notifications), 1 values interview

Slack interview questions

• Design WhatsApp
• Design a Notification System
• Design Search Autocomplete
• Design Slack
• Design Zoom (Video Conferencing)
• Word Search II
• Why do you want to work here?
• Tell me about a time you had to compromise
• Tell me about a time you improved how your team works
• Tell me about a time you stood up for the customer