Unless you're targetting working for a major company (Brazzers who owns PornHub, Tube8, KeezMovies, Extremetube, etc) you've gotta have some serious skills, otherwise you have to create your own site... Not many in the realm of porn actually have full companies behind them, most of them are just your average joe running a site by himself.

Not to mention most porn website owners are cheap... Doing any type of work in that realm is a pain.