Board Thread:Theories and Speculation/@comment-34277398-20190309153341/@comment-1210805-20190315133129

Hiruzen and Iruka were, from all indications, the most consistent people in his life. Until the point at which the series started, Iruka was mainly just there as a teacher. Hiruzen too care of things from a distance, but likely kept their interactions limited due to his own busy schedule, family and to avoid drawing attention considering they kept Naruto's status a secret.

I would imagine the day to day stuff was done by a rotating group of people under orders until Naruto was old enough to care for himself.