Field Service Mechanic (Utility Trucks, Aerials, Hydraulics)

Custom One Truck Source

Fontana, CA


Custom Truck One Source “CTOS”, 14670 Randall Ave, Fontana, CA  92335

  • Located one block from the Auto Club Speedway, CTOS has 27 bays and nearly 30,000 sq. ft.of work space.

Field Service Technician (Aerial Cranes, Heavy Truck & Equipment, Hydraulics, Electrical)

  • Call corporate Recruiting at 816-912-7058
  • You will service and repair track loaders, telehandlers, wheel loaders, trailers, cranes, excavators, bucket trucks, boom trucks, articulated dump trucks and more!
  • Competitive Pay based on experience, over-time is available, affordable healthcare plans, paid time off, 401k match, training, uniforms safety-boot and glasses allowance.
  • Excellent pay based on experience, training, career growth and top-shelf benefits!


Being a field technician / mechanic is unique among service jobs: there is travel to customer sites, a flexible schedule, responsibility for a company vehicle, the need for significant customer interaction. You will determine and perform needed assessment, diagnosis, replacement and repair of CTOS equipment we rent, sell and customer units with minimal oversight. 

  • This position involves troubleshooting, diagnostics, major component change-outs, and preventive maintenance of truck-mounted hydraulic utility equipment. CTOS primary products include Aerial Devices, Digger Derricks, Cranes, and Specialty Equipment.
  • A normal day for an Mobile Service Technician / Equipment Field Mechanic could include on-site troubleshooting, diagnostics, major component change outs, and preventive maintenance of truck-mounted hydraulic utility equipment.
  • State-of-the-art late-model service truck, built-in wi-fi and hands free, truck-mounted remote crane w/ outriggers, hydraulic drive air compressor, enclosed bed, body mounted toolboxes
  • Work directly for the manufacturer with ongoing factory training and world-class technical and engineering support
  • Company-provided specialty, calibrated, battery-powered, and large tools
  • Base from home with flexible scheduling and overnight travel as required; overtime is available to support customer
  • Work directly for the manufacturer with ongoing factory training and world-class technical and engineering support
  • Comprehensive benefits including Medical, Dental and Prescription Drug Program - Retirement 401(k) Program - Vacation and Holidays - Flexible Spending Accounts - Tuition Assistance Program - Employee Assistance and Mental Health/Substance Abuse Program - Life Insurance, Accidental Death and Dismemberment Insurance
  • Competitive pay which rewards performance


  • High school diploma or GED is required. Combination of education, training, or experience that provides the required knowledge, skills, and abilities will be considered.
  • Two plus years of commercial truck technical service experience.
  • Vocational Technical School or Military Wheeled Mechanic or related training a plus
  • Engine, Mechanics, Welding certifications are a plus.
  • Necessary tools to perform job responsibilities.
  • Ability to use various windows-based computer software.
  • CDL License is a plus.
  • 3+ years of experience with heavy machinery or other service technician capacity.
  • Hydraulic experience is an asset.

Equal Employment Opportunity Employer

Custom Truck One Source provides equal employment opportunities to all employees and applicants for employment and prohibits discrimination and harassment of any type without regard to race, color, religion, age, sex, national origin, disability status, genetics, protected veteran status, sexual orientation, gender identity or expression, or any other characteristic protected by federal, state, or local laws.