I don't know about all places, but most, if you have noticeable talent and ability, they will usually either make a position for you, or let you know that they will keep you in mind once a position opens. I know I've worked at places where someone with little to no experience applies for a job that requires experience, and it was within the company's budget to give them a Jr Artist job, as well as eventually hire someone more experienced for the job they actually wanted.

You have to be good though...