Are Levels Class-Based?

I want to be a Bouncer to play with my friends, but I want to play NOW (They are not playing until tomorrow 😛 ) But I don't want to be over-leveled or anything.

If I pick a different class to play, can I switch back to Bouncer and be level 3 again? or do I have an overall level AND a class level?

Once you level a class to whatever level they stay that level. System is like Ff14 where you can switch between classes anytime and retain the levels/items.

@GamerKillance Oh cool. So I can keep Bouncer at level 3, play a different class, and switch back without being OP.