janitor (n.)

• attendant
• caretaker
• cerberus
• char
• charwoman
• cleaner
• concierge
• conservator
• curator
• custodian
• doorkeeper
• doorman
• gamekeeper
• gatekeeper
• governor
• guardian
• keeper
• lifeguard
• lifesaver
• ostiary
• porter
• ranger
• receptionist
• shepherd
• steward
• usher
• warden
• warder