If you enjoy solving tough hydraulic and electrical problems, fabricating clean solutions, and taking pride in safe, quality work — we want to meet you at our Union Grove, WI location.
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Shop Service Technicians
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Field Service Technicians
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Custom Build / Upfit Mechanics
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Welders & Fabricators
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Equipment Assemblers
Electric utilities, telecom, rail, forestry, and construction — the sectors that keep North America running.
Chassis: Medium and heavy duty
Manufacturers: Load King, Terex, Manitowoc, Elliott, National Crane
Equipment: Boom Trucks, Cranes, Bucket Trucks, Digger Derricks, Utility Trucks, Specialty Equipment
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Journeyman Technicians
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Vo-Tech & Trade School Graduates
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Veterans (wheeled/track vehicles, aircraft, generators, engineering rates)
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Construction & Agricultural Equipment Mechanics
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Diesel, Hydraulic, and Electrical Technicians
You don’t need every skill. Bring your mechanical aptitude and curiosity — we’ll invest in your growth.
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Truck & chassis repair
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Hydraulic systems
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Electrical troubleshooting
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Welding and fabrication
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Preventive maintenance and diagnostics
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High school auto, welding, construction, or shop programs
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Vo-Tech or trade school training
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Military mechanical training and experience
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On-the-job mechanical experience
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Personal projects, racing, farm, or hobby mechanic work
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Valid driver’s license required
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CDL is a plus
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Personal mechanic tools preferred, especially for heavy equipment or utility truck repair
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Monday–Friday schedule
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Most shifts start between 5:00–6:00 AM
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Competitive pay based on experience
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401(k) with company match
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Medical, dental, and vision insurance
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Paid vacation, holidays, and sick time
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Ongoing training and career advancement opportunities
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Uniforms and safety gear allowance
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ASE Automobile and Light Truck Certification Tests
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Vehicle & Fleet Welding
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Diesel & Heavy Equipment Systems
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Electrical Systems & Diagnostics (Heavy Equipment)
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Power Take-Off (PTO) & Auxiliary Systems
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Crane & Lifting Equipment Systems
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Aerial & Utility Equipment Systems
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DOT & Equipment Inspection Compliance
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Diesel Engine (Detroit Diesel, Cummins, PACCAR)
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Automotive Vehicles (Ford)
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Diesel Vehicles (Ford)
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Box Trucks (Ford, Peterbilt, Kenworth, Freightliner, Isuzu, Hino)
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Crane (Konecranes, Terex, Manitowoc)
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Boom Truck (Terex, Altec, Elliott, National Crane, Load King)
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Digger Derrick (Terex, Altec, Elliott)
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Aerial Devices (Terex, Altec, Elliott, Versalift)
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Boom Crane (Manitowoc, Link-Belt)
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Tractor-Trailer (Peterbilt, Kenworth, Freightliner, International, Volvo Trucks, Western Star)
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Refuse Truck (Heil)
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Service Truck
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Hi-Rail Truck
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Power Take-Off (PTO)
For 30+ years, CTOS has led specialized truck and heavy equipment solutions. With 41 locations, 2,500 employees, 8,000+ customers, and a rental fleet of 10,000+ units, we deliver the gear and expertise that keep essential services online.
Work Location: Union Grove, Wisconsin
Inserted verbatim:
Custom Truck One Source is an Equal Opportunity Employer.
