In Canada, "Engineer" is a professional designation like Doctor or Lawyer. You're not allowed to call yourself an engineer unless you've jumped through all the hoops (got an Engineering degree from an accredited university, done a required amount of engineering work supervised by a certified engineer, and passed a couple professional exams), and companies aren't supposed to use the term in job titles unless the person in the position is a registered engineer.
As someone with an engineering degree, but who hasn't (and probably never will) fulfilled the other requirements, I'm always turned off by job titles that use the term improperly.
I think that most of what SF'ers do is covered by either "Systems Administrator (or Manager)" or "Network Manager" (I'm not sure why, but Network Administrator doesn't seem right to me.) If there are a couple levels of Sys. Admins, then it might make sense to add "Senior" to some of the job titles.