Let's name it manufacturing (I'm not a native English speaker, so may be there is a better word).
I've been working as a tech for more than 20 years and I've never seen such kind of jobs postings, never!
There are a lot of factories producing machines, which does for example a pack for your milk or print a circuit board for your refrigerator or whatever. And I'm pretty sure they need tech guys to code all these stuff. Moreover, they need guys who will support the supply chain including general front-end, backend, QA specialists.
This is a big industry though I've never seen jobs from they. Why? Do they use another not so fancy tech stack or may be they've had another hiring and working culture.
Just curious.