a window cleaner
Sexton
A person who cleans the street is typically called a street cleaner or a sanitation worker.
Well... A window cleaner?
A janitor or custodian cleans schools. They also have janitorial assistants.
Abbie McConnell
A person who cleans the pool
glazier
A glazier
street sweeper
a person who cleans chimneys
d
A janitor or maid