While creating a job, you can add your in-house recruiters as recruiters in Job Setup section and External Recruiters in Job Promote section.
Recruiters can:
View all the candidates in the pipeline of the job
Edit all the candidates in the job
Take stage actions, disqualify and schedule interviews with all the candidates in the job
See confidential information like Expected Compensation, Emails etc
External Recruiters can:
Add the candidates to a job
See the status of candidates they have added