It's on Sea Harbor drive, across street from the big blackish-blue, glass Harcourt building.
Human Resources is basically on Sea World's property, very close in proximity to the park itself.
Here's the jobline # (407) 370-1562
I believe Sea World just had a job fair a couple of weeks ago, same goes for Universal, Disney just had 1 yesterday the 18th and today the 19th
Good luck to you.