I think a good modern description of FED would be
"Developing the user-side of the API"
How this looks in detail, and who you need, depends on the company and the project.
A Silicon-Valley-Startup-FED will differ vastly from the same role in a traditional European company.
I wouldn't focus so much on the "hard" requirements on Job-Ads, apply anyways, we're in demand!
I like your descriptions Antonio and I do agree with you.
Personally I apply regardless of the role - I’m very much about “fake it till you make it” (to my own detriment I’m sure)
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