CoreWeave coding interview

Round 4 of 7 · 5 questions reported

Format: Coding and pair coding
Heads-up: Reported onsite tasks: a client that gets a token, fetches remote data, transforms and stores it; a tree with depth- and breadth-first operations; querying machines and marking them offline. A senior SRE loop had two LeetCode mediums (dynamic programming, tree traversal).

Questions CoreWeave asks in this round 5

C
Token-authenticated client that pulls, transforms and stores dataCodingWrite a small program from scratch, one step at a time: 1. Get an access token through an OAuth flow. 2. Use the token to call a remote endpoint (an old database's API) and fetch…
Last asked Oct 2025
C
Represent and evaluate boolean predicate expressionsCodingDesign data structures for boolean predicates, simple conditions combined with AND, OR and NOT, and write the code that evaluates a predicate against an input to true or false.
Last asked Jul 2026
C
Tree class with depth-first and breadth-first operationsOO designDesign a tree class and implement its operations, some by depth-first and some by breadth-first traversal, and explain which traversal suits each operation and why.
Last asked Jul 2026
C
Query machines from an API and mark them offlineCodingWrite code against an HTTP API for a machine inventory: fetch the machines, pick out the ones that should be taken out of service, and call the API to mark each of them offline…
Last asked Feb 2026
C
Feature flags across channels with inheritanceCodingBuild a feature flag store organized by channels. Each channel has an id, its own map of flag names to true or false, and zero or more parent channels. Looking up a flag on a…
Last asked Jan 2026