the.com/lineman

means A tradesperson who builds, repairs, and maintains electrical power lines and telecommunications cables, often from the top of a pole or a bucket truck.

from Straightforward compound of 'line' (the electrical or telegraph wire) plus 'man,' the worker assigned to it. The term rose with the spread of telegraph and telephone lines in the 1800s, when crews strung wire across whole continents, then stuck as electrical grids expanded in the 20th century — the job title outlasting the poles it first described.