Diesel Mechanic Jobs in California

Diesel Mechanic jobs in California are concentrated in Los Angeles, the Inland Empire, and the San Francisco Bay Area, where freight logistics, public transit fleets, and heavy construction keep demand strong across experience levels from entry-level lube technicians to master diesel technicians. Major employers with a lasting California footprint include Ryder System, Penske Truck Leasing, and the Los Angeles County Metropolitan Transportation Authority, all of which maintain large service operations that hire consistently. The most in-demand specialties are emissions diagnostics, heavy construction equipment, and commercial truck drivetrain repair, with California's strict CARB standards making emissions-certified technicians especially sought after. Find a role that fits below and apply directly.

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Overview

Open roles129+
Top employerUnited Rentals
Top citySacramento, CA
Cities hiring75
Work type100% On-site
Top industryChemicals

Showing 5 of 129+ Diesel Mechanic jobs

WM
Tractor Trailer Diesel Mechanic Overtime
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WM
New 16h ago
Tractor Trailer Diesel Mechanic Overtime
WM
Carson, California
Business Operations
Business Strategy
Consulting & Professional Services
10,000+

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Rush Enterprises
Diesel Mechanic Technician-HOURLY RATE 12:30pm-9pm
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Rush Enterprises
Added 1d ago
Diesel Mechanic Technician-HOURLY RATE 12:30pm-9pm
Rush Enterprises
El Cajon, California
Logistics & Inventory
Maintenance & Repair
Skilled Trades
$25 - $41/hr
High school diploma or GED
5,001-10,000

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RATP Dev
ASE Certified Diesel Mechanic – Transit Bus Fleet
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RATP Dev
Added 1d ago
ASE Certified Diesel Mechanic – Transit Bus Fleet
RATP Dev
Camarillo, California
Corporate Training
Educational Administration
Learning & Development
EPA 609 Certification
10,000+

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Amerit Fleet Solutions
Mobile Diesel Technician/ Mechanic with MHE (Forklift Experience)
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Amerit Fleet Solutions
Added 1d ago
Mobile Diesel Technician/ Mechanic with MHE (Forklift Experience)
Amerit Fleet Solutions
Ventura, California
Biotech & Life Sciences
Clinical Support
Laboratory Science
$35 - $41/hr
1,001-5,000

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Ryder System
Diesel Mechanic
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Ryder System
Added 3d ago
Diesel Mechanic
Ryder System
Sacramento, California
Maintenance & Repair
Skilled Trades
$40.24/hr
EPA 609 Certification

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Diesel Mechanic Jobs by City in California

Where California roles are concentrated, by current openings.

Sacramento
7 jobs
Fontana
6 jobs
Oakland
6 jobs
San Jose
6 jobs
San Diego
6 jobs
Riverside
5 jobs
Fresno
4 jobs
Modesto
4 jobs
Gilroy
3 jobs

Diesel Mechanic Job Market in California

A snapshot from current California openings, updated as new roles post.

Who's Hiring

  • United Rentals
    United Rentals12
  • Rush Enterprises
    Rush Enterprises9
  • Cox Fleet (Part of Cox Enterprises)
    Cox Fleet (Part of Cox Enterprises)9
  • US Foods
    US Foods8
  • Cox Automotive
    Cox Automotive7

Top Industries Hiring

  • Chemicals & Materials
  • Staffing & Recruiting

What California Employers Look For

The qualifications that appear most often in diesel mechanic jobs across California.

  • ASE diesel certification or active enrollment in ASE testing strongly preferred by California employers
  • Valid California Class A or Class B commercial driver license for fleet testing roles
  • Two or more years of hands-on experience with medium- or heavy-duty diesel engines
  • Proficiency with diagnostic software such as Cummins Insite, Detroit Diagnostic Link, or Delphi DS
  • Ability to perform smog and emissions inspections compliant with California Air Resources Board standards
  • Own hand tools and willingness to work shifts including nights or weekends in fleet environments

Diesel Mechanic Jobs in California: Frequently Asked Questions

How do you become a diesel mechanic in California?

Start with a certificate or associate degree in diesel technology from a California community college such as Fresno City College, Rio Hondo College, or Citrus College, which offer programs aligned with industry standards. California does not require a state-issued diesel mechanic license, but earning ASE certification in medium and heavy truck is the most widely recognized credential among California employers. A California Class A or Class B commercial driver license strengthens candidacy for fleet technician roles.

Which companies hire diesel mechanics in California?

Companies currently hiring diesel mechanics in California include United Rentals, Rush Enterprises, and Cox Fleet (Part of Cox Enterprises), per current listings on Migrate Mate as of September 2026. California's large freight corridors, public transit agencies, and construction sectors mean both private fleet operators and public employers post diesel mechanic openings year-round.

Which California cities have the most diesel mechanic jobs?

The cities with the most diesel mechanic openings in California are Sacramento, Fontana, and Oakland. The distribution reflects California's freight and logistics infrastructure, with the Inland Empire and Los Angeles Basin anchored by major distribution centers, port operations, and transit agencies, while the Bay Area and Central Valley support agricultural equipment and regional fleet maintenance hubs.

Are there remote diesel mechanic jobs in California?

Yes, but they're rare. About 0% of diesel mechanic openings tied to California are remote or hybrid as of September 2026, given the hands-on nature of the work. The portions of the role most compatible with remote arrangements include service advisor coordination, parts procurement, and warranty documentation for technicians who have moved into supervisory or support positions.

How can I get hired as a diesel mechanic in California with little or no experience?

The most realistic entry path is a lube technician or service technician helper role at a California fleet operation or dealership, where on-the-job training is common. Ryder and Penske both run structured technician apprenticeship programs at their California service centers. Completing a diesel technology certificate at a California community college and passing even entry-level ASE tests demonstrates commitment and gives candidates a measurable edge over applicants without credentials.

Where can I find and apply to diesel mechanic jobs in California?

You can find and apply to diesel mechanic jobs in California on Migrate Mate, which lists current California openings updated regularly. Find the roles that fit your experience and location and apply directly to the employers posting them.

See All 129+ Diesel Mechanic Jobs in California

Find roles in California that match your experience and apply in just a few clicks.

Find Diesel Mechanic Jobs