Notion system design interview

Round 5 of 7 · 2 questions reported

See the whole loop
Length
60 min
Format
Design discussion
They grade
Real-time collaboration: OT versus CRDTs, websockets at scale, offline sync, block storage, permissions

Questions Notion asks in this round 2

  • Design Google CalendarSystem designCreate events, invite people, handle recurring events and time zones, show free/busy, and send reminders, for hundreds of millions of users.
    Last asked Jun 2026
  • Design an event analytics platformSystem designDesign the platform that collects product events from the app and makes them available for analysis. Cover how events are captured and ingested, how they land in the warehouse or…
    Last asked Apr 2026