Senior Diesel Technician — Fleet Maintenance & Diagnostics

ROAD ONE MOBILE INC

Ontario (CA)

On-site

USD 65,000 - 90,000

Full time

14 days+

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Benefits offered by this job

401(k)

Bonus based on performance

Company car

Competitive salary

Flexible schedule

Opportunity for advancement

Paid time off

Job summary

Road One Mobile Inc in Ontario, CA is seeking an experienced Diesel Mechanic to join our hands-on team keeping a fleet of heavy-duty vehicles on the road. You will diagnose, repair, and maintain diesel-powered trucks and trailers, perform preventive maintenance, and ensure DOT compliance.

Strong diagnostic skills with engines from Cummins, Detroit, and PACCAR are essential; ASE certification is preferred. We offer a competitive salary, benefits, and opportunities for advancement in a fast-paced

Qualifications

5+ years of hands-on diesel mechanic experience.
Skilled in diagnosing and repairing diesel engines from major brands.
Experience with diagnostic tools such as Nexiq or Jaltest.
Knowledge of DOT regulations and safety standards.
ASE certification or trade school training preferred.
Must supply own set of professional hand tools.
Strong attention to detail and ability to work independently.

Responsibilities

Diagnose, repair, and maintain diesel-powered trucks, trailers, and heavy-duty vehicles.
Perform preventive maintenance including oil changes, brake inspections, and fluid checks.
Troubleshoot engine, transmission, electrical, and hydraulic system failures.
Conduct DOT inspections and ensure vehicles meet compliance and safety standards.
Utilize diagnostic software and tools to identify and resolve mechanical issues.
Complete accurate repair orders and maintenance documentation.
Coordinate with fleet managers to prioritize repairs and minimize vehicle downtime.