Agency that recruits personnel for other client companies.

I’m looking for, preferably a theme, it can be a plugin, for an agency that recruits staff for other client companies.

Must meet, among other features:
1.- Ability to recruit and manage staff
2.- database of the client companies
3.- Ability to put companies and job candidates in contact with each other.
4.- Ability to publish the job offers of the clients
5.- Follow-up of the employees hired by the clients
6.- Employee payroll management