I don't think these types of places are the ones you find on HN. They're more likely mom and pop places, family run and really just waiting to benefit from automation.

I did consulting at an HVAC company that had the vibe I am describing. I am not saying these positions are abundant, but if you check craigslist, depending on where you live, you might find these either under the software/QA jobs or under the computer gigs sections.