CoreWeave system design interview

Round 5 of 7 · 7 questions reported

See the whole loop
Format
One or two design rounds
They grade
Infrastructure at scale: consistency, fault tolerance, fleets of machines
Heads-up
Reported prompts: a notification system for 1M bursty writes per second, a strongly consistent store for fleet validation data, batched reboots across a machine fleet, website monitoring, a Kubernetes platform that runs and autoscales user apps.

Questions CoreWeave asks in this round 7

  • Design a notification systemSystem designA shared service other teams call to send push, email and SMS notifications: templates, user preferences, retries, deduplication and rate limits.
    Last asked Sep 2026
  • Design a system that distributes work to human workersSystem designDesign a service that hands out workflow tasks to people who complete them by hand: tasks come in, get assigned to available workers, and are tracked until done. Cover how tasks…
    Last asked Jul 2026
  • Design a website monitoring serviceSystem designDesign a service that keeps checking whether a set of websites are up and responding, records the results over time and alerts the owners when a site goes down. Cover how checks…
    Last asked Jul 2026
  • Troubleshoot a Kubernetes pod stuck in PendingSystem designA pod on a Kubernetes cluster never leaves the Pending state. Walk through how you find out why and how you fix it. A good answer goes step by step from what the cluster tells you…
    Last asked Jul 2026
  • Design batched reboots across a machine fleetSystem designDesign a system that reboots a large set of machines in batches rather than all at once. Cover how batches are chosen and sized, how you confirm each machine came back healthy…
    Last asked Feb 2026