Principle Engineer
My email signature at work has my name, followed by the words, “Principle Engineer.” It’s been that way for probably two years.
An Indian engineer pointed out that it should be Principal, not Principle. He also pointed out that English is his fourth language.
I looked up both definitions just to be sure.
principle 
–noun 1. an accepted or professed rule of action or conduct: a person of good moral principles.
vs
principal
–adjective 1. first or highest in rank, importance, value, etc.; chief; foremost.
The more I think about it, the more I like it the way it is. 
Maybe you could changed the cards to “Principled Engineer”?
Jo
September 27, 2006
Doesn’t that imply past-tense or passive?
Michael
September 27, 2006
I think this guy has his ‘principles’ mixed up.
I agree; yours sounds better, since you would be pushing for good morals!
Barb
September 27, 2006
Not only that, Barb, but I engineer them.
Michael
September 28, 2006
how about Principle Principal Engineer?
Dan
July 9, 2008
could someone tell me what the difference between principal engineer and chief engineer?
lynne
June 22, 2010
> difference between principal engineer and chief engineer?
A principal engineer is the main engineer in charge of one area or discipline, a Chief Engineer is in charge of many or all.
Richard
April 5, 2011