IPA: /ˈwaɪər/
KK: /ˈwaɪər/
A person who uses wire for various purposes, such as making traps or constructing fences.
The wirer skillfully set up the fence to keep the animals out of the garden.
"wir" (from Old English *wir*, meaning wire or filament) and "-er" (meaning a person who). The word "wirer" refers to a person who works with or creates wires.
Think of someone who works with 'wire' ('wir') — the '-er' just means a person. A wirer is someone who handles or creates wires.