Put 421A or 310T expertise to work as a mobile service technician, repairing CTOS heavy equipment across Northern Ontario.
Custom Truck One Source is hiring a Remote Heavy Duty Equipment Technician based near Greater Sudbury or Timmins. This field-focused position serves customer locations throughout Northern Ontario, with approximately 75% overnight travel. You will diagnose and repair bucket trucks, boom trucks, aerial lift equipment, digger derricks, forestry equipment, hi-rail equipment, and related systems.
Key Responsibilities: Travel to customer locations throughout the assigned Northern Ontario territory
Diagnose and repair utility trucks and specialized equipment
Perform preventative maintenance inspections and scheduled service
Verify repairs and road-test equipment when required




Maintain positive customer relationships while minimizing equipment downtime
Requirements: 421A, 310T Red Seal, or related journeyperson trade certification
Valid driver's license with a clean driving record
Solid customer service and professional communication skills
Ability to travel approximately 75% overnight
Ability to work in varying weather conditions and maneuver tools safely
Bring certified heavy equipment repair capabilities, field independence, and dependable customer service to CTOS mobile operations.

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📌 Mobile 421A 310T Service Technician (Ontario)
🏢 Custom Truck One Source
📍 Ontario