Sorry for the question but what is revolutionary in this project? The word "blockchain"?
To me it looks like another freelance service.
The whitepaper explains this thoroughly and to what extent we can use blockchain in order to revolutionise traditional recruitment methods -
https://jobchain.co/JobChain_Whitepaper_.pdfIn short:
We can create an immutable source of candidate history
Automated recruitment process between Employer and Employee using a smart contract
Incentivise a smoother recruitment process e.g. people showing up for interviews
Global transactions for hiring from/to abroad
There's more and it's all explained in much more detail in the Whitepaper, hope this helps