Sierra technical phone screen interview

Round 2 of 6 · 3 questions reported

See the whole loop
Length
60 min
Format
One live coding problem in Python or TypeScript
They grade
Data structures and traversal (including cycle detection), clean implementation, clear reasoning
Heads-up
Sierra has said this round may become a system design interview; check the current format.

Questions Sierra asks in this round 3

  • Conversation history under a token budgetCodingFit a conversation history into a token budget for the next model call, keeping the most important messages and dropping or summarizing the rest. Reported on 1point3acres' Sierra…
    Last asked Oct 2026
  • Fetch all pages until an empty batchCodingPage through a batched API until it returns an empty batch, collecting every record without fetching forever on errors. Reported on 1point3acres' Sierra bank; reconstructed in our…
    Last asked Oct 2026
  • Split Markdown into chunks that keep their headersCodingSplit a Markdown file into chunks no larger than a size limit. When a new chunk starts in the middle of a section, it must begin with the headers that text sits under (for example…
    Last asked Apr 2026