
He's an ENGINEER
and I'm an experimental physicist.
The Big Bang Theory Season 4, Episode 7

...about a minor league ENGINEER
with an unresolved Oedipal complex.
The Big Bang Theory Season 4, Episode 7

And, hey, just to be clear,
a train ENGINEER.
The Big Bang Theory Season 10, Episode 15

a job I was qualified for
because I'm an MIT-trained ENGINEER.
The Big Bang Theory Season 9, Episode 9

Granted, you're just an ENGINEER...
The Big Bang Theory Season 4, Episode 18