Drills

Drill 07

Interview drill 07Interview-style design round

A dispute-analyst assistant for a card issuer

  • 45 minutes
  • Elective · Financial services
  • No real companies

Hypothetical. No affiliation with or endorsement by the companies named. Public facts as of 6 October 2026; sources at the end of the brief.

The prompt

"You're the forward deployed engineer for an AI vendor. A US card issuer, credit and debit, runs a dispute operation of a few hundred analysts. Volumes are up, investigation deadlines are tight, and quality reviews show analysts reaching different outcomes on similar evidence. The head of disputes wants an assistant that gathers the evidence, drafts the finding and drafts the letter to the cardholder, so analysts decide faster. Compliance says three things stay intact: the regulatory clocks, the reasons cardholders are given, and an audit trail an examiner can follow. Model risk will ask how this fits their framework. Take 45 minutes: how do you scope it, build it and get it signed off?"

The clock

  1. Clarify0–5 min
  2. Discovery plan5–15 min
  3. Design15–30 min
  4. Risks and evals30–40 min
  5. Rollout and the ask40–45 min

Lessons for this drill

Pro drill

The rest of this drill is in Pro.

What to know going in, the curveballs on the clock, a strong answer, the common mistakes and the rubric.

  • Every stage and specialisation, in full
  • Every lab and every role project
  • Halden weeks 2–10, on your record
  • Every drill, live in the playground
  • All solutions, plus the server judge
  • Lab Assistant and every Teach with AI