repairman, repairer, maintenance man, service man, fixer

a skilled worker whose job is to repair things

• automobile mechanic, auto-mechanic, car-mechanic, mechanic, grease monkey — someone whose occupation is repairing and maintaining automobiles
• handyman, jack of all trades, odd-job man — a man skilled in various odd jobs and other small tasks
• mender, tinker, tinkerer — a traveling repairman who mends broken things (such as metal household utensils)
• troubleshooter, trouble shooter — a worker whose job is to locate and fix sources of trouble (especially in mechanical devices)

• skilled worker, trained worker — a worker who has acquired special skills