Apple Software Engineer interview experience

There were five rounds total: three that felt professional, technical, and fair, and two that were much more challenging because the interviewers seemed intent on pushing candidates into a corner.

The main technical focus was on thermal engineering concepts—heat transfer, fluid mechanics, and thermodynamics. The difficulty level was average in terms of the subject matter, but what changed the experience was the interview style in those tougher rounds: they kept asking question after question until they found something I couldn’t answer, and some of the questions veered into details about