janitor

One who attends to the maintenance or cleaning of a building.

A doorman.

A doorkeeper; a porter.

A man employed to take charge of rooms or buildings, to see that they are kept clean and in order, to lock and unlock them, and generally to care for them.

One who is employed to care for a public building, or a building occupied for offices, suites of rooms, etc.; a caretaker; -- the duties may include removal of trash, cleaning of the rooms and public areas, and minor repairs.