technical depth

This is an entire interview round (OpenAI's project deep dive, Amazon's Tech Talk), not small talk. It is where they check whether you genuinely 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 dressed up 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.