I think that's way too hard to answer since it depends on so many factors. But again, my experience isn't that the pay is too low. It's not like there are 10 people coming to the interview with no one taking the offer because of the salary. It's more like no one have applied for the job in three months and the external recruiters sniping LinkedIn didn't find anyone.
But to give some kind of estimate just so you know what page I'm at when I say they pay well I would say somewhere between $60-75k.
> Firstly, if you are big enough, you can manage/architect your data centre better than a cloud provider. You can afford to hire staff to do it, and they can build something specific to your needs. Companies like this should be on-prem.
It's interesting that competent engineers is only a question about cost to you. Where I am at (north of Europe) it's really hard to find good engineers. Even though it doesn't mean much about competence it's not mandatory for people in the IT industry to have a CS degree even if they're managing infrastructure in the cloud for millions every year.
I've been working in the industry at different companies for a bit over 10 years and I would say that a huge majority is just an average person who knows basic concepts about infrastructure but wouldn't be able to design and implement any of it by their own. This includes network infrastructure for the biggest ISPs in the country.
I work as a system engineer and the teams I've been working with the last 5 years, independent of company, have been looking for engineers constantly. The pay well and have great benefits but it's just not enough people out there to take these jobs and manage a full on-prem infrastructure.
So a part of the money you're talking about that should be used to hire all these really competent people are instead used to pay for cloud services where we know that professional people with far more hardware (and software) knowledge is managing the infrastructure. And this is really convenient for a lot of companies.
But to give some kind of estimate just so you know what page I'm at when I say they pay well I would say somewhere between $60-75k.