I am fully registered to work in France as a translator/interpreter, and also to provide assistance services.
My SIRET number is 508 103 330 00025.
I am registered for VAT, number FR 10 508 103 330.
Please ensure that whoever you employ to work for you is properly registered in France. The penalties if you are caught employing people illegally can be very severe, and ignorance of the law will not be accepted as a defence.