30% tax ruling?

I am 25, did my masters for two years in NL, and currently on a job search year visa. I recently found a job. I called IND and they told me that 30% tax ruling would be applicable only if I was living outside of the NL and was recruited from abroad. But I also heard that other people similar to my situation got the tax reduction. I believe it might be smth to do with also being below 30 years old.

Anyone who has experience with this?