im going to establish a translation company, how can i employ professional translators all over the world?

As someone who was responsible for localizing marketing materials into 6 languages for almost two years I can say that Google and other online translators are not at the level where I would use them for anything other than casual, on-the-fly translations. Artificial intelligence is not capable of interpreting nuances of language.

Using LinkedIn as Jane-e suggests is a good place to start to recruit talent. You might also reach out to local your local university and ask their language department chair for advice. They may have adjunct faculty or graduate students that might like extra side work.

Good luck!