This is the 15310th most frequent Russian word.
постоянного
"Постоянного" means "constant" or "permanent" in English.
In this sentence, 'постоянного' is the genitive singular form of the adjective 'постоянный,' meaning 'permanent,' modifying 'сотрудника' (employee). It describes a lasting and continuing nature or status.
Она искала постоянного сотрудника для своей компании.
She was looking for a permanent employee for her company.
Here, 'постоянного' is the genitive form of 'постоянный,' meaning 'frequent,' describing 'посетителя' (visitor). It refers to someone who regularly visits a place.
Мы встретились в кафе на постоянного посетителя.
We met at the café of the frequent visitor.
In this case, 'постоянного' is an adjective form that describes 'напряжения' (voltage), denoting its unchanging or continuous characteristic.