Origin of 'Engineer' 1350–1400; engine + -eer; replacing Middle English engin(e)our < Anglo-French engineor Old French engigneor < Medieval Latin ingeniātor, equivalent to ingeniā(re ) to design, devise (verbal derivative of ingenium; see engine) + Latin -tor -tor
Out of all that gobbledygook, I find the words: "to design, devise". Pretty simple, and pretty much exactly what I've always thought engineers do. And since 'design, devise' can be applied to practically anything, then pretty much anyone who thinks they're an engineer, is an engineer.

Because of that, the word 'engineer' doesn't do much for me. Too generic. Now, the term used PRECEDING the word 'engineer' that's the important one...