Semiconductor and chip hardware internships
Silicon validation, characterization, ATE and product engineering at the chip companies. The distinguishing skill is reasoning about a part you cannot see inside: inferring a failure mechanism from bench data, corner conditions and yield behaviour.
Open Semiconductors postings
Prep for one of these properly
The reading on each posting page is the free version. Paste the posting itself and you get weighted domains with the sentence behind every weight, a question bank generated for that role, and a readiness score you can audit.