Model Profiles and Recruiting

Summary:

We can create a Model Profile for individual Contributor and Manager and attach the jobs relevant to the profiles. Since we have Job description also available at the Profile level, how can we tie this with recruiting because each job will have a separate job description.

Do we need to create model profile for each job? In that case, what will be the use of Modelling a profile based on Job?

If we need to profile each job independently, what is the consumption of Model Profile?