A glazier
I think the most proper name would be glazier, which is someone who installs and repairs glass.
a mechanic comes to mind
A plumber
The person who fixes taps is commonly referred to as a plumber. Plumbers are skilled tradespeople who specialize in installing and repairing plumbing systems, including pipes, fixtures, and appliances. They address issues like leaks, clogs, and faulty installations.
a window cleaner
glazier
construction workers
ummmm wow idk but what a dumb question! only some weirdo would wanna know that!
A mechanic
A Mechanic.
Watchmaker Also, an heurologist
A Mechanic.