Mercor AI/ML design interview

Round 5 of 5 · 2 questions reported

See the whole loop
Format
ML and LLM round, for ML roles
Heads-up
The MLE onsite had three rounds; screens for applied AI roles asked about RAG, fine-tuning, context limits and state.

Questions Mercor asks in this round 2

  • Design candidate search for a talent marketplaceAI/ML designDesign a system that lets a company search for candidates and ranks them for a role: how candidate profiles are represented and indexed, how a query or job description retrieves…
    Last asked May 2026
  • Review a compact GPT-style transformer implementationAI/ML designYou are given a short implementation of a GPT-style decoder-only transformer. Read it and review it: explain what each part does (embeddings, attention with its causal mask…
    Last asked Jul 2026