A leading heavy-duty truck dealership group is hiring a Mobile Fleet Diesel Technician in Danbury, CT, to independently support dedicated fleet accounts on-site. Ideal candidates are experienced heavy-duty technicians with strong diagnostic skills. If you thrive in field work and take pride in delivering reliable, high-level service, step into a role built around your expertise.

Duties & Responsibilities

• Perform on-site diagnostics, repairs, and preventative maintenance on heavy-duty fleet trucks
• Troubleshoot diesel engines, aftertreatment systems, and electrical components using advanced diagnostic tools
• Inspect, test, and repair wiring, circuits, and related electrical systems
• Complete repairs in accordance with manufacturer specifications and dealership standards
• Conduct comprehensive vehicle inspections to identify potential issues and reduce downtime
• Accurately document services performed, diagnostics, and parts usage
• Communicate findings, repair timelines, and maintenance recommendations clearly with fleet contacts
• Coordinate with in-shop technicians for advanced diagnostics or complex repairs when needed
• Follow all safety procedures while working in various customer environments

Requirements

• Required:
• • Proven experience as a heavy-duty diesel technician working on commercial trucks
  • Strong diagnostic and troubleshooting skills with diesel engines and electrical systems
  • Ability to work independently in a mobile/field environment
  • Solid time management and organizational skills
  • Professional communication skills and strong attention to detail
  • Valid driver’s license with acceptable driving record
  • Commitment to maintaining safe work practices
• Preferred:
• • Freightliner and/or Detroit engine experience
  • Prior dealership or fleet maintenance experience
  • OEM or ASE certifications related to heavy-duty diesel repair