How to hire a programmer from Russia for a short period (up to a month) to work remotely in an EU country?

Question

Distant work

What are the legal features when hiring a programmer in this case? What documents need to be prepared, to whom to report, etc.

Answer 1

наймите его через upwork и не заморачивайтесь

Answer 2

I was hired simply:
1. Skype interview.
2. Test task.
3. Worked for a month.
4. We sent money to a foreign currency bank account.