Physical Intelligence hand coding interview

Round 2 of 3 · 1 question reported

See the whole loop
Length
60 min
Format
VS Code over SSH on a small backend project; the recruiter says ahead of time that it is backend and database work
They grade
A correct cache wired into the service, and how you test it
AI use
Written by hand
Heads-up
The reported task was implementing a cache from scratch.

Questions Physical Intelligence asks in this round 1

  • Bounded LRU cache in front of a database repositoryCodingLockedA backend service reads records from a database through a repository, and reads are slow. Write, by hand, a cache in front of the repository: repeated reads of a key are served…
    Last asked Sep 2026