Des Moines is MidAmerican Energy’s Iowa headquarters market, with line mechanic, substation, and storm-response work across Polk County feeders. Employers hiring for lineman jobs Des Moines and powerline worker jobs Des Moines include MidAmerican Energy, Alliant Energy, Quanta Services, and AEP. Des Moines lineman salary: $86,321 average annual pay. Nearby: West Des Moines , Ankeny , Urbandale , Ames . MidAmerican line mechanic applicants need a one-year approved line school before its two-year registered apprenticeship. Explore open lineman jobs in Des Moines below.