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Diesel Assistant Jobs in California (NOW HIRING)

EPSILON SYSTEMS

Diesel Mechanic

San Diego, CA · On-site

$23.31 - $26.07/hr

Use technical knowledge and experience to troubleshoot faults and casualties on various diesel engines and associated auxiliary equipment and systems. * Assist in identifying causes of equipment ...

EPSILON SYSTEMS

Diesel Mechanic

Encinitas, CA · On-site

$23.31 - $26.07/hr

Use technical knowledge and experience to troubleshoot faults and casualties on various diesel engines and associated auxiliary equipment and systems. * Assist in identifying causes of equipment ...

EPSILON SYSTEMS

Diesel Mechanic

Escondido, CA · On-site

$23.31 - $26.07/hr

Use technical knowledge and experience to troubleshoot faults and casualties on various diesel engines and associated auxiliary equipment and systems. * Assist in identifying causes of equipment ...

EPSILON SYSTEMS

Diesel Mechanic

San Diego, CA

$23.31 - $26.07/hr

Use technical knowledge and experience to troubleshoot faults and casualties on various diesel engines and associated auxiliary equipment and systems. * Assist in identifying causes of equipment ...

EPSILON SYSTEMS

Diesel Mechanic

San Diego, CA · On-site

$23.31 - $26.07/hr

Use technical knowledge and experience to troubleshoot faults and casualties on various diesel engines and associated auxiliary equipment and systems. * Assist in identifying causes of equipment ...

EPSILON SYSTEMS

Diesel Mechanic

Jamul, CA · On-site

$23.31 - $26.07/hr

Use technical knowledge and experience to troubleshoot faults and casualties on various diesel engines and associated auxiliary equipment and systems. * Assist in identifying causes of equipment ...

EPSILON SYSTEMS

Diesel Mechanic

San Diego, CA · On-site

$23.31 - $26.07/hr

Use technical knowledge and experience to troubleshoot faults and casualties on various diesel engines and associated auxiliary equipment and systems. * Assist in identifying causes of equipment ...

EPSILON SYSTEMS

Diesel Mechanic

San Diego, CA · On-site

$23.31 - $26.07/hr

Use technical knowledge and experience to troubleshoot faults and casualties on various diesel engines and associated auxiliary equipment and systems. * Assist in identifying causes of equipment ...

EPSILON SYSTEMS

Diesel Mechanic

San Diego, CA · On-site

$23.31 - $26.07/hr

Use technical knowledge and experience to troubleshoot faults and casualties on various diesel engines and associated auxiliary equipment and systems. * Assist in identifying causes of equipment ...

EPSILON SYSTEMS

Diesel Mechanic

Del Mar, CA · On-site

$23.31 - $26.07/hr

Use technical knowledge and experience to troubleshoot faults and casualties on various diesel engines and associated auxiliary equipment and systems. * Assist in identifying causes of equipment ...

First Student, Inc.

Diesel Mechanic

Merced, CA · On-site

$34/hr

Complete work orders accurately. * Assist with mobile emergency repair services when needed. Diesel Technician Qualifications * At least 1 years of diesel or automotive maintenance and repair ...

First Student

Diesel Mechanic

Merced, CA

$34/hr

Complete work orders accurately. * Assist with mobile emergency repair services when needed. Diesel Technician Qualifications * At least 1 years of diesel or automotive maintenance and repair ...

First Student, Inc.

Diesel Mechanic

Oxnard, CA · On-site

$32 - $35/hr

Complete work orders accurately. * Assist with mobile emergency repair services when needed. Diesel Technician Qualifications * At least 3 years of diesel or automotive maintenance and repair ...

First Student

Diesel Mechanic

Oxnard, CA

$32 - $35/hr

Complete work orders accurately. * Assist with mobile emergency repair services when needed. Diesel Technician Qualifications * At least 3 years of diesel or automotive maintenance and repair ...

First Student, Inc.

Diesel Mechanic

Concord, CA · On-site

$40.41 - $43.08/hr

Complete work orders accurately. * Assist with mobile emergency repair services when needed. Diesel Technician Qualifications * At least 3 years of diesel or automotive maintenance and repair ...

Do not use

Apprentice Diesel Technician

Redding, CA · On-site

Inspect vehicles and report findings to senior technicians * Assist with diagnostics and ... Diesel Technician 1-3 ? Journeyman Technician 1-2 We are an Equal Opportunity Employer Dobbs ...

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Diesel Assistant information

What skills and qualifications are needed to be a diesel assistant?

To thrive as a Diesel Assistant, you need foundational mechanical knowledge, basic diesel engine repair skills, and often a high school diploma or equivalent. Familiarity with diagnostic tools, hand and power tools, and safety protocols is essential, and some employers may require completion of a diesel technology training program. Strong attention to detail, a willingness to learn, and effective teamwork are valuable soft skills in this role. These capabilities ensure safe, efficient maintenance of diesel equipment and contribute to the smooth operation of fleet or repair shop environments.

What is the difference between Diesel Assistant vs Diesel Mechanic?

AspectDiesel AssistantDiesel Mechanic
CertificationsBasic automotive or diesel engine training, possibly a CDLASE certification in diesel engines, technical diploma
Work EnvironmentAssist with maintenance, inspections, and basic repairs in garages or fleet settingsPerform complex repairs, diagnostics, and engine overhauls in repair shops or on-site
Job ResponsibilitiesSupport mechanics, perform routine tasks, and assist with partsDiagnose issues, repair engines, and perform detailed maintenance

While both roles involve working with diesel engines, a Diesel Assistant primarily supports mechanics with basic tasks and routine maintenance, requiring less certification. A Diesel Mechanic performs advanced repairs and diagnostics, often holding specialized certifications. The roles differ mainly in responsibility level and technical expertise required.

What challenges do diesel assistants face when supporting maintenance teams?

Diesel Assistants often encounter challenges such as working in noisy, fast-paced environments and handling physically demanding tasks like lifting heavy parts or equipment. They may also need to quickly adapt to changing priorities as emergency repairs or breakdowns arise. Collaborating effectively with mechanics and technicians is essential for smooth workflow, and maintaining a strong attention to safety procedures is crucial due to the nature of working with heavy machinery and hazardous materials.

What is a diesel assistant?

Diesel Assistants are support personnel who assist with the maintenance, repair, and operation of diesel-powered vehicles and equipment, commonly in railway or transportation sectors. Their duties often include checking and fueling engines, performing routine inspections, assisting mechanics, and ensuring that diesel locomotives or machinery operate efficiently. Diesel Assistants work under the supervision of senior technicians or engineers and play a crucial role in keeping the equipment running smoothly and safely. This position is often entry-level and can serve as a stepping stone to more advanced roles within the diesel maintenance field.

What are the most commonly searched types of Diesel jobs in California?

The most popular types of Diesel jobs in California are:

What cities in California are hiring for Diesel Assistant jobs?

Cities in California with the most Diesel Assistant job openings:

Diesel Assistant jobs near you
Infographic showing various Diesel Assistant job openings in California as of August 2026, with employment types broken down into 1% As Needed, 76% Full Time, 19% Part Time, 2% Temporary, and 2% Contract. Highlights an 98% Physical, 1% Hybrid, and 1% Remote job distribution.

Diesel Mechanic

EPSILON SYSTEMS

San Diego, CA • On-site

$23.31 - $26.07/hr

Full-time

Posted 5 days ago

Job description

Epsilon Systems Solutions is seeking a full-time Diesel Mechanic in San Diego, CA.
Job Summary: Under minimal supervision, provide semi-professional technical support for working in material condition assessment, fault diagnostics, corrective maintenance, corrective recommendations, testing, and process improvement. Work pertains to providing support to a San Diego-based customer for the repair of Naval ship diesel engines.
Duties and Responsibilities:
  • Reviews or prepares Process Control Procedures (PCPs) for diesel engine work.
  • Briefs ships' crew and managers on the status of assigned tasks and/or repairs.
  • Provides on-the-job training to ship crews when conducting maintenance and/or critical repairs.
  • Use technical knowledge and experience to troubleshoot faults and casualties on various diesel engines and associated auxiliary equipment and systems.
  • Assist in identifying causes of equipment/system failure at the component level.
  • Provides technical assistance and on-the-job training to active duty and other government personnel relative to the operation, maintenance, grooming, overhaul, and repair of diesel engines.
  • Work from schematics, diagrams, written and verbal descriptions, layouts or defined plans to perform testing, checkout and trouble-shooting functions
  • Perform non-routine assignments involving relatively limited scope through larger, more diverse repairs.
  • Perform tests to evaluate engine and/or component performance in accordance with technical guidance utilizing specified tool and/or of instruments.
  • Analyzes test results, prepare reports on findings and provide recommendations.
  • Performs complex operational test and fault isolation on systems and equipment.
  • Gathers and maintains specified records of engineering data such as tests, drawings, etc.

Required Qualifications:
  • High School Diploma or equivalent.
  • Minimum 4 years work related experience.
  • Minimum 4 years specialized experience assessing and diagnosing faults with Navy diesel engines.
  • Ability to obtain and maintain a DOD security clearance.
  • Formal training in diesel engine operation, maintenance & diagnostics from any of the following: Navy Diesel Engine Training Courses or Original Equipment Manufacturer schools relevant to:
    • Fairbanks Morse Defense/Colt Pielstick PC 2.5
    • Fairbanks Morse Defense/Colt Pielstick PA6B STC
    • Fairbanks Morse Defense 8 -1/8 Opposed Piston Marine Engine
    • Caterpillar 3608
    • GM EMD 645E
    • MTU Model 20V 8000 M90
  • Effective oral and written communication.
  • Sound interpersonal skills needed to interface, coordinate with company personnel, customers, and outside contacts, if appropriate
  • Basic computer skills.
  • Experience with Formal Work Procedures (FWPs) and Controlled Work Procedures (CWPs) IAW JFFM may be substituted for PCP experience.

Preferred Qualifications:
  • Navy NEC: 733B, U13A, U24A, U25A, U26A.
  • Knowledgeable in Navy QA and Planning procedures
  • Knowledgeable in Navy Quality assurance practices and Joint Fleet.
  • Maintenance Manual (JFMM) chapters relating to maintenance of diesel engines.

Pay Range:
The pay range for this role is $23.31 - $26.07 Hourly. This is a reasonable estimate for this role. Individual salaries are determined by various factors including, but not limited to, business considerations, local market conditions, internal equity, and candidate qualifications, such as skills, education, and experience.
ADA Notations:
  • Requires walking, reaching, sitting, and concentration in the presence of occasional noise.
  • Ability to move in narrow and restricted passageways, up/down steep and narrow ladders or stairways, and up and down antenna masts/yardarms (onboard ships).
  • Ability to lift, carry, and move objects up to 50 lbs.
  • Office environment, waterfront, and shops.

Epsilon Systems Solutions, Inc. is an equal opportunity employer. Qualified candidates will be considered without regard to legally protected characteristics.

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