This is the 487th most frequent Czech word.
jako
"Jako" means "like" or "as."
The word 'jako' is used here to mean 'as', indicating his role or position.
On pracuje jako učitel.
He works as a teacher.
In this sentence, 'jako' means 'like', used for comparison to a professional.
Zpíváš jako profesionál.
You sing like a professional.
Here, 'jako' is employed to mean 'as', specifying the manner in which to use it.