How do you say banker?

How do you say banker?
 

How would I say my girlfriend is a banker? The word I found is 'banquero', so for my girlfriend I would say banquera, right? However, when I search for 'banquera' everything corrects it to banquero.

Ella es banquera. (or Ella es un banquera? in english I would say 'a banker')

Ella es banquero...no right? 0_o......

and to try it in espanol

Como se dice en español 'my girlfriend is a banker'? Encuentro la parabla 'banquero' pero creo que la prabla yo queiro es 'banquera', ¿no? ¿Debo decir 'un' before la profeción (o profesión)?

Mi novia (amiga, amigovia) es una banquera.

Make sure the article (una) matches the noun (banquera).
It's OK to omit the article, but most would say it in this case.

"Mi novia es banquera"

:)

banquera says the dictionary (if she is a bank owner or a bank high officer)

Mi novia es empleada de banca ("banquera" if she is the owner; congratulations, then :D).