Student or Learner
When I was inquiring about a job to one of my friends, He told me If you are interested, get back to me. Here my doubt is,
If you are interested, get back to me. or
If you are interested, get me back.
I will get back to you. or
I will get you back.
The other meaning of "Get someone back" is to avenge yourself, either in a joking way or a dangerous way.
Your friend plays a practical joke on you, and you say "You better keep your eyes open, because I'm going to get you back!" That means you'll have your revenge by pranking him at some time in the future.
As spongie said, in this case "get back to me" is absolutely the right way to say it.
I'm not a teacher, but I write for a living. Please don't ask me about 2nd conditionals, but I'm a safe bet for what reads well in (American) English.