What level should a Unity developer be to be hired?

Question

C++ / C#

What Unity-developer should understand (skills, skills, etc.)
How many years should I study and is it worth studying the most important thing if we move towards VR AR

Answer 1

Open vacancies and see the requirements.
Actually, it's an idiotic question. To be hired by whom? June? Senior? What projects, technologies, platforms? What are the responsibilities?
About how many years - someone and the whole life is not enough.