attendant — An attendant is someone whose job is to serve or help people in a place such as a petrol station, a car park, or a cloakroom.
custodian — The custodian of an official building, a companies' assets, or something else valuable is the person who is officially in charge of it.
sitter — Willem de [wil-uh m duh] /ˈwɪl əm də/ (Show IPA), 1872–1934, Dutch astronomer and mathematician.
superintendent — a person who oversees or directs some work, enterprise, establishment, organization, district, etc.; supervisor.
caretaker — A caretaker is a person whose job it is to look after a large building such as a school or a block of flats or apartments, and deal with small repairs to it.
concierge — (Britain) One who attends to the maintenance of a building and provides services to its tenants and visitors.
doorkeeper — a person who guards the entrance of a building.
gatekeeper — a person in charge of a gate, usually to identify, count, supervise, etc., the traffic or flow through it.
porter — the left-hand side of a vessel or aircraft, facing forward.
super — Informal. a superintendent, especially of an apartment house. supermarket. supernumerary. supervisor.
bearer — The bearer of something such as a message is the person who brings it to you.
bellhop — A bellhop is a man or boy who works in a hotel, carrying bags or bringing things to the guests' rooms.
carrier — A carrier is a vehicle that is used for carrying people, especially soldiers, or things.
janitor — a person employed in an apartment house, office building, school, etc., to clean the public areas, remove garbage, and do minor repairs; caretaker.
skycap — a porter who carries passenger baggage at an airport or airline terminal.
transporter — a person or thing that transports, especially a very large truck for large or heavy loads, as missiles or automobiles.
conductor — A conductor is a person who stands in front of an orchestra or choir and directs its performance.
guide — to assist (a person) to travel through, or reach a destination in, an unfamiliar area, as by accompanying or giving directions to the person: He guided us through the forest.
herald — (formerly) a royal or official messenger, especially one representing a monarch in an ambassadorial capacity during wartime.
lead — to cover, line, weight, treat, or impregnate with lead or one of its compounds.