rininformatics has gone over this question. She even wrote a blog post on this which is found on this forum, but here is the link.
Have you also browsed the older question on this forum? Nonetheless,the most common answer to your question is, get involved in any way with your hospitals EMR team. However, read the blog post above for more details.
You mentioned your hospital user EMR documentation. Have you become one of the experts using it? Can you train the new nurses in your unit on how to use? And you don't really have to ask permission to do this. When others see you are an expert using the system, then they come to you, and next thing you know, word gets around that you're one of the savvy computer nurses on the floor and then when an implementation comes around, you're asked to be a super user.
That's a possible scenario, but the idea is for you to get involved right now (if not yesterday) with your EMR team. You don't know who they are? Find out!
Most jobs description tend to be a bit more general than you would expect, but maybe also try to find entry level positions. These are hard to find as many employers don't advertise this, so then all you can do is send out your resume and see if they call you.