> You are not going to be installing the latest hot js framework on a mainframe.
I think IBM would disagree with you, given how much they've pushed Linux (and, therefore, Linux web servers running Node and kin) on their mainframes. You won't be installing much of anything like that on a midrange system, but Linux on Z is pretty well established.
Doesn't that depend on the client company, rather than IBM? I'm going with what I know from the one (big,financial) corp that I worked in with COBOL on mainframes; there, we didn't use linux at all.
Anyway those environments are downright sclerotic (the worst thing about working with COBOL that nobody mentions). They didn't even let me install Firefox on my work laptop. They had people doing web dev, obviously, but the mainframe teams were more, let's say, conservative.
I think IBM would disagree with you, given how much they've pushed Linux (and, therefore, Linux web servers running Node and kin) on their mainframes. You won't be installing much of anything like that on a midrange system, but Linux on Z is pretty well established.