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Diesel Engineer Jobs in California (NOW HIRING)

Prevailance

Diesel Engine Inspector (DEI)

San Diego, CA · On-site

$110K - $130K/yr

Provide technical management and engineering oversight across multiple Navy surface ships and military auxiliary vessels. * Serve as senior subject matter expert for diesel propulsion systems, diesel ...

Prevailance

Diesel Engine Inspector (DEI)

San Diego, CA · On-site

$110K - $130K/yr

Provide technical management and engineering oversight across multiple Navy surface ships and military auxiliary vessels. * Serve as senior subject matter expert for diesel propulsion systems, diesel ...

Frontline General Engineering Construction, Inc.

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Diesel and Fuel Mechanic

Livermore, CA · On-site

$90K - $115K/yr

Diesel and Fuel Mechanic Department: Equipment Maintenance Reports To: Equipment Manager/Fleet ... This position supports heavy civil and general engineering construction projects by minimizing ...

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Diesel Engineer information

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$5

$39

$51

How much do diesel engineer jobs pay per hour?

As of Jul 27, 2026, the average hourly pay for diesel engineer in California is $39.23, according to ZipRecruiter salary data. Most workers in this role earn between $32.26 and $44.62 per hour, depending on experience, location, and employer.

What are the key skills and qualifications needed to thrive as a Diesel Engineer, and why are they important?

To thrive as a Diesel Engineer, you need strong mechanical aptitude, knowledge of diesel engine systems, and typically a degree or diploma in mechanical or automotive engineering. Familiarity with diagnostic tools, engine management software, and industry certifications such as ASE Diesel Certification are often required. Problem-solving ability, attention to detail, and effective communication are standout soft skills in this role. These skills ensure accurate diagnostics, efficient repairs, and reliable engine performance in various industrial and transportation settings.

How much do diesel engineers get paid?

Diesel engineers typically earn a median annual salary of around $50,000 to $70,000, depending on experience, location, and certifications. Skilled diesel engineers with specialized knowledge of engines and maintenance procedures can earn higher wages, especially in industrial or transportation sectors.

What Does a Diesel Engineer Do?

The duties of a diesel engineer or mechanic are to inspect, maintain, and repair diesel engines. They perform diagnostics on engines and inspect the parts and system machinery to determine what service is required on the vehicle. A diesel engineer regularly utilizes diagnostic equipment and other tools, and they should have an in-depth knowledge of the diesel electrical system. Customer service skills are also important when describing a repair to a customer.

What is the difference between Diesel Engineer vs Mechanical Engineer?

AspectDiesel EngineerMechanical Engineer
CertificationsRelevant certifications in diesel systems, such as ASE or manufacturer-specific trainingEngineering degrees, often a Bachelor's in Mechanical Engineering
Work EnvironmentWorkshops, repair facilities, and on-site at transportation or industrial companiesDesign offices, manufacturing plants, or research labs
Industry UsageTransportation, maritime, and industrial sectors focusing on diesel enginesBroad industry applications including automotive, aerospace, manufacturing, and energy

Diesel Engineers specialize in maintaining and repairing diesel engines, often requiring specific certifications and working in hands-on environments. Mechanical Engineers have a broader scope, focusing on design, analysis, and development across various engineering fields. While both roles require engineering knowledge, Diesel Engineers focus more on practical maintenance within specific industries, whereas Mechanical Engineers are involved in design and innovation across multiple sectors.

What does a diesel engineer do?

A diesel engineer designs, maintains, and repairs diesel engines used in vehicles, machinery, and power generation equipment. They troubleshoot mechanical issues, perform inspections, and ensure engines operate efficiently and safely, often working with diagnostic tools and adhering to safety standards.

What are some typical challenges Diesel Engineers face when working on large-scale projects?

Diesel Engineers working on large-scale projects often encounter challenges such as coordinating with multidisciplinary teams, troubleshooting complex engine issues under tight deadlines, and ensuring compliance with strict environmental and safety regulations. Effective communication and adaptability are crucial, as project requirements may change and unexpected technical problems can arise. Additionally, staying up-to-date with advancements in diesel technology and emission standards is essential for success in this dynamic field.

Can diesel techs make 100k?

Diesel technicians can earn $100,000 or more annually, especially with experience, specialized skills, certifications, and working in high-demand industries or locations. Advanced roles such as lead technicians or shop managers often have higher earning potential. However, entry-level positions typically pay less than this amount.

What are Diesel Engineers?

Diesel Engineers are specialized professionals who design, maintain, repair, and oversee diesel engines and related systems. They work with a variety of diesel-powered equipment, such as trucks, buses, ships, generators, and heavy machinery. Their responsibilities typically include diagnosing engine problems, performing routine maintenance, ensuring compliance with safety standards, and sometimes upgrading engine systems for better efficiency. Diesel Engineers may work in industries like transportation, construction, agriculture, or energy, and often need strong mechanical skills and knowledge of diesel engine technology.

What engineers make $500,000?

Highly experienced engineers in specialized fields such as petroleum, aerospace, or software engineering can earn $500,000 or more annually, often through a combination of base salary, bonuses, and stock options. These roles typically require advanced skills, extensive experience, and sometimes leadership responsibilities or working in high-cost-of-living areas.
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What job categories do people searching Diesel Engineer jobs in California look for? The top searched job categories for Diesel Engineer jobs in California are:
What cities in California are hiring for Diesel Engineer jobs? Cities in California with the most Diesel Engineer job openings:
What are popular job titles related to Diesel Engineer jobs in CA? For Diesel Engineer jobs in CA, the most frequently searched job titles are:
Diesel Engineer jobs near you
Infographic showing various Diesel Engineer job openings in California as of July 2026, with employment types broken down into 91% Full Time, 6% Part Time, 2% Contract, and 1% Nights. Highlights an 99% Physical, and 1% Remote job distribution, with an average salary of $81,589 per year, or $39.2 per hour.
Diesel Engine Inspector (DEI)

Diesel Engine Inspector (DEI)

Prevailance

San Diego, CA • On-site

$110K - $130K/yr

Full-time

Posted yesterday

Job description

Job Type
Full-time, Contract
Description
This position is contingent upon contract award
Multiple positions available
The Diesel Engine Inspector (DEI) is a propulsion inspection specialist (diesel) who provides diesel inspection expertise and inspector-perspective guidance for diesel auxiliary systems.
This position supports fleet readiness through management of propulsion system operations, combat systems maintenance, inspection programs, technical training, and complex engineering projects associated with Navy surface ships and military auxiliary vessels.
The DEI serves as a principal subject matter expert for diesel propulsion systems, combat systems operations, maintenance management, and depot-level maintenance processes. The position is responsible for supervising technical teams, coordinating with government stakeholders, and ensuring compliance with Navy operational, engineering, and maintenance standards.
Key Responsibilities
  • Lead and supervise technical personnel supporting propulsion plant operations, combat systems maintenance, engineering analyses, inspections, and technical project execution.
  • Provide technical management and engineering oversight across multiple Navy surface ships and military auxiliary vessels.
  • Serve as senior subject matter expert for diesel propulsion systems, diesel generators, associated control systems, auxiliary systems, and Navy combat systems.
  • Support operation, maintenance, troubleshooting, inspection, and readiness assessments for AEGIS and Ship Self-Defense System (SSDS) combat systems.
  • Conduct and oversee diesel engine inspections in accordance with Navy maintenance procedures, standards, and certification requirements.
  • Support planning, coordination, and execution of depot-level and organizational-level maintenance activities for propulsion and combat systems.
  • Analyze operational and maintenance data to identify trends, improve system reliability, and enhance fleet readiness.
  • Provide technical guidance and mentorship to engineering personnel, inspectors, operators, maintenance teams, and training staff.
  • Coordinate with government representatives, maintenance activities, ship's force personnel, Type Commanders (TYCOMs), Immediate Superior in Command (ISIC) staffs, and Afloat Training Groups.
  • Develop and review technical reports, inspection findings, maintenance assessments, readiness evaluations, and corrective action recommendations.
  • Ensure compliance with Navy engineering, operational, maintenance, and safety requirements.

Requirements
Required Qualifications
  • Extensive Navy technical management experience on multiple ships.
  • Extensive experience as shipboard Engineering Officer of the Watch (EOOW) on multiple diesel ships.
  • Extensive experience (at least 2 tours) as Navy Diesel Engine Inspector with Navy surface ship maintenance processes.
  • A minimum of fifteen (15) years of supervisory level watchstanding experience on warships or military auxiliaries with diesel engine propulsion systems as Engineering Officer of the Watch (EOOW), Propulsion Plant Watch Officer, Chief Engineer, or equivalent responsible for overall propulsion plant operations and associated auxiliary systems.
  • A minimum of fifteen (15) years of experience conducting diesel inspections on surface warships or military auxiliaries with qualifications and certification as or equivalent to a U.S. Navy Diesel Engine Inspector.
  • Direct operational and maintenance experience, within the last five (5) years, with diesel main propulsion, diesel generators, associated control systems, and associated auxiliaries currently in use by the Navy

Preferred Qualifications
  • Experience supporting Navy fleet modernization, readiness, lifecycle maintenance, or waterfront engineering programs.
  • Experience supporting shipyard operations, depot maintenance activities, or major maintenance availabilities.
  • Familiarity with Navy maintenance databases, combat systems documentation, engineering reporting systems, and technical data management tools.
  • Prior experience managing complex engineering or maintenance support contracts.

Work Environment
  • Work may be performed in office environments, shipboard locations, waterfront operations areas, maintenance facilities, or shipyards.
  • Position may require travel to fleet concentration areas, operational commands, maintenance facilities, and shipboard locations in support of inspections, maintenance activities, and operational readiness efforts.

Security Clearance
  • Active DoD security clearance (Secret or higher) required.

Salary Description
$110,000-$130,000

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