What you call person who fixes light
A mechanic or an automotive technician is the person who fixes cars.
A handyman fixes a lot of things, specifically things located in or around a house. They fix windows, toilets, light fixtures, painting, drywall and carpentry.
A person that fixes cars is called a mechanic.
A person who fixes compasses is typically known as a compass adjuster or compass technician.
A mechanic.
Horologist
A person who fixes the glass portion of windows is called a glazier.
A cobbler is a person who mends shoes.
Horologist .
A mechanic.
Horologist .