technical depth

This is a full interview round (OpenAI's project deep dive, Amazon's Tech Talk), not small talk. It is where they test whether you actually understand the work you claim. The signal is depth, your specific contribution, and the tradeoffs you can defend. Here is how to prepare and deliver it.

A depth probe disguised as a story. They want to watch you reason through genuine difficulty and keep going when pushed three levels down. The signal is a real hard problem, a systematic attack, and a root cause you own cold.