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Assistant Diesel Mechanic Jobs in Colorado (NOW HIRING)

Follow company safety procedures and equipment-maintenance standards * Assist experienced technicians with more advanced repairs and equipment rebuilds as needed Diesel Mechanic Qualifications

Follow company safety procedures and equipment-maintenance standards * Assist experienced technicians with more advanced repairs and equipment rebuilds as needed Diesel Mechanic Qualifications

Follow company safety procedures and equipment-maintenance standards * Assist experienced technicians with more advanced repairs and equipment rebuilds as needed Diesel Mechanic Qualifications

Diesel Mechanic

Winter Park, CO · On-site

$37.50 - $41.50/hr

Perform repairs and replacements on diesel engines, ensuring optimal functionality. * Assist A-Level and B-Level Mechanics in advanced diagnostic and repair tasks, contributing to efficient workflow.

Diesel Mechanic

Winter Park, CO · On-site

$37.50 - $41.50/hr

Perform repairs and replacements on diesel engines, ensuring optimal functionality. * Assist A-Level and B-Level Mechanics in advanced diagnostic and repair tasks, contributing to efficient workflow.

Diesel Mechanic

Thornton, CO · On-site

$30 - $50/hr

Transdev is now hiring a Second Shift Diesel Mechanic for our shop serving City of Thornton ... Obtain four (4) ASE Certifications within one (1) year of employment. * Assist with road calls and ...

Diesel Mechanic

Thornton, CO · On-site

$30 - $50/hr

Transdev is now hiring a Second Shift Diesel Mechanic for our shop serving City of Thornton ... Obtain four (4) ASE Certifications within one (1) year of employment. * Assist with road calls and ...

Diesel Mechanic

Denver, CO · On-site

$41 - $44/hr

Complete work orders accurately. * Assist with mobile emergency repair services when needed. Diesel ... Possession of a mechanic's tool set to complete all assigned duties. * Willingness to participate ...

Diesel Mechanic

Denver, CO · On-site

$41 - $44/hr

Complete work orders accurately. * Assist with mobile emergency repair services when needed. Diesel ... Possession of a mechanic's tool set to complete all assigned duties. * Willingness to participate ...

Diesel Mechanic

Denver, CO · On-site

$41 - $44/hr

Complete work orders accurately. * Assist with mobile emergency repair services when needed. Diesel ... Possession of a mechanic's tool set to complete all assigned duties. * Willingness to participate ...

Complete work orders accurately. * Assist with mobile emergency repair services when needed. Diesel ... Possession of a mechanic's tool set to complete all assigned duties. * Willingness to participate ...

Diesel Mechanic - A

Longmont, CO · On-site

$39.03 - $42.15/hr

As a Diesel Mechanic, you'll play a crucial role in ensuring safety, efficiency, and longevity for ... Perform repairs and replacements on diesel engines, ensuring optimal functionality. * Assist in ...

Diesel Mechanic - A

Longmont, CO · On-site

$39.03 - $42.15/hr

As a Diesel Mechanic, you'll play a crucial role in ensuring safety, efficiency, and longevity for ... Perform repairs and replacements on diesel engines, ensuring optimal functionality. * Assist in ...

Heavy Diesel Mechanic, Mixer Truck Mechanic, Concrete Manufacturing, Fleet Service Technician ... May assist in the maintenance and repair of fixed equipment * Adhere to all Brannan and OSHA rules ...

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Assistant Diesel Mechanic information

See Colorado salary details

$13

$21

$30

How much do assistant diesel mechanic jobs pay per hour?

As of Aug 28, 2026, the average hourly pay for assistant diesel mechanic in Colorado is $21.10, according to ZipRecruiter salary data. Most workers in this role earn between $18.22 and $22.74 per hour, depending on experience, location, and employer.

What is an assistant diesel mechanic?

Assistant Diesel Mechanics are entry-level professionals who support experienced diesel mechanics in maintaining, repairing, and servicing diesel engines and vehicles. Their duties often include tasks such as changing oil, replacing filters, assisting with diagnostics, and keeping the work area organized. They also help with more complex repairs under supervision, ensuring that trucks, buses, and other diesel-powered equipment operate safely and efficiently. This role is a valuable stepping stone for those looking to advance in the diesel technology field.

What are the key skills and qualifications needed to thrive as an assistant diesel mechanic?

To thrive as an Assistant Diesel Mechanic, you need a solid understanding of diesel engine fundamentals, basic mechanical repair skills, and a high school diploma or technical certification in diesel technology. Familiarity with diagnostic software, hand and power tools, and maintenance record systems is typically required. Strong attention to detail, a willingness to learn, and effective teamwork are crucial soft skills for this role. These competencies ensure accurate repairs, efficient servicing, and safe operation of diesel-powered vehicles and equipment.

What are some typical challenges an assistant diesel mechanic may face in their daily work?

Assistant Diesel Mechanics often encounter challenges such as diagnosing complex engine problems, working with heavy and sometimes outdated equipment, and managing time effectively in a busy repair shop environment. They may also need to quickly adapt to new technologies and tools as diesel engines evolve, while ensuring all repairs meet strict safety and regulatory standards. Effective communication with lead mechanics and other team members is crucial to ensure tasks are completed efficiently and safely.

What is the difference between Assistant Diesel Mechanic vs Diesel Mechanic?

AspectAssistant Diesel MechanicDiesel Mechanic
CertificationsBasic technical training, ASE certifications often preferredAdvanced ASE certifications, extensive training required
Work EnvironmentAssists in repair shops, garages, fleet maintenancePerforms repairs, diagnostics, and maintenance independently
Job ResponsibilitiesSupports diagnostics, basic repairs, parts replacementPerforms complex repairs, troubleshooting, and diagnostics
Experience LevelEntry-level or apprentice roleExperienced, skilled technician

The main difference between an Assistant Diesel Mechanic and a Diesel Mechanic lies in experience, responsibilities, and certification levels. Assistants support more routine tasks and are often in training, while Diesel Mechanics handle complex repairs independently. Both roles are essential in fleet maintenance and repair environments, with the Assistant Diesel Mechanic serving as a stepping stone to becoming a fully qualified Diesel Mechanic.

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

The most popular types of Diesel Mechanic jobs in Colorado are:

What cities in Colorado are hiring for Assistant Diesel Mechanic jobs?

Cities in Colorado with the most Assistant Diesel Mechanic job openings:

Infographic showing various Assistant Diesel Mechanic job openings in Colorado as of August 2026, with employment types broken down into 2% As Needed, 75% Full Time, 19% Part Time, 2% Temporary, and 2% Contract. Highlights an 98% Physical, 1% Hybrid, and 1% Remote job distribution, with an average salary of $43,888 per year, or $21.1 per hour.
JARBO
Apparel and Accessories Stores • 11 - 50 employees

$27 - $32/hr

Full-time

Medical, Dental, Vision, Retirement

Re-posted yesterday


Job description

Diesel Mechanic – Industrial Equipment

Starting Pay: Up to $30 per Hour, Depending on Experience

Are you mechanically inclined and interested in building a long-term career working on diesel-powered equipment and hydraulic systems?

We are seeking a Diesel Mechanic to maintain and repair industrial pumping equipment. Candidates with previous diesel, heavy-equipment, agricultural-equipment, or hydraulic repair experience are encouraged to apply. We are also willing to train recent graduates of diesel, automotive, heavy-equipment, or industrial maintenance programs who have a strong mechanical foundation and are ready to continue developing their skills.

This is an excellent opportunity to gain specialized experience working with diesel engines, hydraulic systems, industrial pumps, and related equipment.

Diesel Mechanic Responsibilities

  • Perform preventive maintenance on diesel-powered machinery and industrial pumping equipment
  • Inspect, diagnose, troubleshoot, and repair diesel engines and related mechanical systems
  • Troubleshoot and repair hydraulic systems, including pumps, hoses, fittings, cylinders, valves, and controls
  • Identify worn, damaged, or malfunctioning components and recommend appropriate repairs
  • Complete oil changes, filter changes, fluid checks, lubrication, and other scheduled maintenance
  • Remove, repair, and replace mechanical and hydraulic components
  • Test equipment after repairs to verify proper and safe operation
  • Use diagnostic equipment, hand tools, power tools, and precision measuring instruments
  • Maintain accurate service, inspection, and repair documentation
  • Keep the work area, tools, and equipment clean and organized
  • Follow company safety procedures and equipment-maintenance standards
  • Assist experienced technicians with more advanced repairs and equipment rebuilds as needed

Diesel Mechanic Qualifications

  • Previous experience with diesel engines, heavy equipment, agricultural equipment, hydraulics, industrial machinery, or mechanical maintenance is preferred
  • Recent graduates of diesel technology, automotive technology, heavy-equipment technology, or industrial maintenance programs are encouraged to apply
  • Basic understanding of diesel engine operation and mechanical systems
  • Familiarity with hydraulic systems is helpful, but additional training may be provided
  • Ability to use common mechanic’s tools and diagnostic equipment
  • Ability to read service manuals, equipment diagrams, and technical instructions
  • Strong troubleshooting and problem-solving skills
  • Dependable, safety-conscious, and willing to learn
  • Ability to work independently and as part of a maintenance team
  • Valid driver’s license and acceptable driving record may be required

Experience That May Transfer Well

Candidates may be a strong fit if they have worked as a:

  • Diesel Technician
  • Heavy Equipment Mechanic
  • Agricultural Equipment Technician
  • Construction Equipment Mechanic
  • Hydraulic Technician
  • Industrial Maintenance Technician
  • Fleet Mechanic
  • Automotive Technician
  • Pump Technician
  • Field Service Technician
  • Military Vehicle or Equipment Mechanic

Compensation

  • Starting pay up to $30 per hour
  • Starting rate will be based on diesel, hydraulic, heavy-equipment, industrial-maintenance, and troubleshooting experience
  • Entry-level candidates and recent graduates will be considered based on their education, hands-on training, mechanical aptitude, and tool knowledge
  • Opportunities to increase earning potential as skills and responsibilities grow

Why Apply?

  • Opportunity to enter a specialized area of industrial equipment maintenance
  • Hands-on experience with diesel-powered machinery, hydraulic systems, and industrial pumps
  • Consideration for both experienced mechanics and recent technical-school graduates
  • Opportunity to learn from experienced technicians
  • Variety of troubleshooting, preventive maintenance, and repair work
  • Long-term opportunity to expand your technical skills and advance within the organization
  • Comprehensive benefits (medical, dental, vision, hospital, accident, and short-term disability insurance; holiday pay; bonus opportunities; 401K with company match 

Apply today to be considered for this Diesel Mechanic / Diesel Technician opportunity. Please include a current resume showing any relevant diesel, automotive, hydraulic, heavy-equipment, agricultural-equipment, military, or industrial-maintenance experience.

We are an equal opportunity employer. All qualified applicants will receive consideration for employment without regard to any characteristic protected by applicable federal, state, or local law.

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