My grand father was spanish (Spain), i'm us citizen, can i get the spain citizenship along with the us?

Question

In order to work in Europe do i need any european citizenship?

Answer 1

Many people have dual citizenships check with the Spanish councel.

Answer 2

You'd probably need a work permit first.  Normally, Spanish citizenship requires a few years(10) of residency permit along witha work permit, which are not one and the same.