Mechanical / Structural engineer..
School then work that was about it. Takes some tome to get to know your job but I have been doing this for 10+ years now.
I do drafting etc etc etc..
I make thing ranging from ships - trains - bridges - buildings - kats - military stuff(I cant confirm nor deny that)
You name it I probably have had some hand in building something in your state..

I am at a Steel company. We have burning machines that cuts from guage plate up to 14" thick material. All types of grades of steel and also structurals.

Basicly what ever engineering with maybe 1 or 2 exceptions. Expect tons of math....