英訳をお願いします。

He's long past 60 years old, but he's still working.

He has been working as a janitor in a nursery school for five years now. He works among the children as if they were his grandchildren.

He(She) was over sixty old and be a old man but he keeps working .
He works of janitor in kindergarten for five years.
And he works around children like grandchild

となるかと。