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Hardware / privacy
Apple interview themes
What people report studying for — not a take-home dump. Last editorial update 2026-08-08.
Privacy by defaultOn-device vs warehouseShared lake
Rounds you should expect
Design
Two engines, one Iceberg table. What you refuse to dual-write. How identifiers stay out of a vendor LLM.
SQL
Grain and uniqueness under a privacy constraint — no “just dump the fact to a notebook.”
Recently added questions
2026-08-26 · Shared lake, one writer
Two engines must share one lake table. What do you refuse to do?
Dual-write CSV or two independent Delta copies. Pick Iceberg (or UniForm) with a single writer. Two writers is how the copies lie.