The FBI does not have a job called “Profiler”. That is a function performed by Supervisory Special Agents in the National Center for the Analysis of Violent Crime (NCAVC) located in Quantico, Virginia. They possess a lot of knowledge related to criminal behavior along with a deep understanding of facts and statistical probabilities related to criminal activity. Special agents with the FBI must have three years of experience to become a Supervisory Special Agent. The average experience, however, is about eight years or more. So the first requirement would be admission to the FBI as a special agent.
For more information and explicit requirements, you can visit the FBI web site at: