Diesel Mechanic

CTOS - Trucks & Equipment
Wyandanch, NY

Hiring Service Technician / Mechanic to support Utility Trucks and Equipment.

We welcome all experience levels — Journeyman Techs, Vo-Tech grads, Veterans (wheeled/track, aircraft, generator, maintenance), and mechanics with construction or agricultural equipment backgrounds.

Experience with diesel truck-mounted hydraulic utility equipment such as aerial devices, digger derricks, cranes is a plus.

Key Details:

  • Boom Trucks/Cranes, Bucket/Dump Trucks, Digger Derricks, Utility Trucks, and more.

  • Chassis: Freightliner, Peterbilt, International, Mack, Ford, Chevrolet, RAM

  • Hydraulics, reading blueprints, hydraulics cylinders, hoses, PTO’s etc.

  • Electrical Wiring, schematics, multimeter, CANBus etc.

  • Monday to Friday, 7:00 am to 3:30 pm, with overtime as needed.

  • Competitive pay based on experience, comprehensive benefits including 401(k) with employer match, healthcare plans, paid time off, holidays, and more.

Essential Duties and Responsibilities:

  • Background in hydraulic fluid power troubleshooting.

  • Background in pneumatic tool troubleshooting.

  • Experience troubleshooting diesel equipment and aftertreatment systems.

  • Experience with Quick Serve, DTNA and other diagnostic software.

  • Assess, diagnose, and repair a variety of utility equipment from various manufacturers.

  • Dismantle and reassemble heavy equipment using appropriate tools.

  • Test mechanical products and equipment to ensure compliance with specifications.

  • DOT, ANSI and Dielectric testing.

  • Perform routine maintenance and cleanliness tasks on equipment and vehicles.

  • Maintain accurate records of parts, services, and labor for cost tracking.

  • Adhere to safety protocols and attend monthly safety meetings.

  • Ability to possess a CDL.

Skills and Qualifications:

  • 3 plus years of related experience.
  • High school diploma or equivalent.
  • Own set of tools required.
  • Valid driver’s license. (CDL a plus)

Benefits:

  • 401(k) with Employer Match
  • Health Care including Dental, Vision, and Life Insurance
  • Paid Vacation, Sick and Holidays
  • STD/LTD
  • Employee Stock Purchase Plan
  • Partner Discounts
  • Tuition Reimbursement

CTOS is an Equal Opportunity Employer. No work sponsorship available.

You should be proficient in:

  • Electrical Systems Diagnostics & Repair
  • Engine Performance & Drivability
  • Diesel Engine Systems
  • Brake & Suspension Systems
  • Transmission & Drivetrain Systems
  • ASE Automobile and Light Truck Certification Tests
  • Engine Repair
  • Automatic Transmission/Transaxle
  • Suspension and Steering
  • Light Vehicle Diesel Engines
  • Advanced Engine Performance
  • Oil Changes
  • Vehicle & Fleet Welding

Machines & technologies you'll use:

  • Diesel engine
  • Diesel Vehicles
  • Box Trucks
  • Crane
Posted 2026-04-24

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