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Diesel Assistant Jobs in Washington (NOW HIRING)

Accel Talent Group

Diesel Technician

Washington, DC · On-site

$23 - $38/hr

Follow all company safety procedures and guidelines * Assist with parts inventory and supply management Qualifications Required: * High School Diploma or GED * Minimum 2 years of heavy-duty diesel or ...

Accel Talent Group

Diesel Technician

Washington, DC · On-site

Follow all company safety procedures and guidelines * Assist with parts inventory and supply management Qualifications Required: * High School Diploma or GED * Minimum 2 years of heavy-duty diesel or ...

Accel Talent Group

Diesel Technician

Washington, DC · On-site

$23 - $38/hr

Follow all company safety procedures and guidelines * Assist with parts inventory and supply management Qualifications Required: * High School Diploma or GED * Minimum 2 years of heavy-duty diesel or ...

Transdev

Diesel Mechanic Technician - Fairfax

Fairfax, VA · On-site

$46.02/hr

Perform moderate complexity repairs and replacements on diesel engine components, ensuring optimal functionality. * Assist A-Level Mechanics in advanced diagnostic and repair tasks, contributing to ...

DeAngelo Contracting Services

Diesel Mechanic

Springfield, VA · On-site

$26 - $34.50/hr

Diagnose and repair diesel and gasoline-powered trucks and snow removal equipment. * Perform ... Conduct emergency field service repairs as needed during snow operations. * Assist with fabrication ...

DeAngelo Contracting Services

Diesel Mechanic

Woodbridge, VA · On-site

$24.75 - $32.75/hr

Diagnose and repair diesel and gasoline-powered trucks and snow removal equipment. * Perform ... Conduct emergency field service repairs as needed during snow operations. * Assist with fabrication ...

DeAngelo Contracting Services

Diesel Mechanic

Quantico, VA · On-site

$27 - $35.50/hr

Diagnose and repair diesel and gasoline-powered trucks and snow removal equipment. * Perform ... Conduct emergency field service repairs as needed during snow operations. * Assist with fabrication ...

DCS Asset Maintenance

Diesel Mechanic

Dumfries, VA

$24.75 - $32.50/hr

Diagnose and repair diesel and gasoline-powered trucks and snow removal equipment. * Perform ... Conduct emergency field service repairs as needed during snow operations. * Assist with fabrication ...

DCS Asset Maintenance

Diesel Mechanic

Quantico, VA

$27 - $35.50/hr

Diagnose and repair diesel and gasoline-powered trucks and snow removal equipment. * Perform ... Conduct emergency field service repairs as needed during snow operations. * Assist with fabrication ...

DCS Asset Maintenance

Diesel Mechanic

Springfield, VA · On-site

$26 - $34.50/hr

Diagnose and repair diesel and gasoline-powered trucks and snow removal equipment. * Perform ... Conduct emergency field service repairs as needed during snow operations. * Assist with fabrication ...

DCS Asset Maintenance

Diesel Mechanic

Woodbridge, VA

$24.75 - $32.75/hr

Diagnose and repair diesel and gasoline-powered trucks and snow removal equipment. * Perform ... Conduct emergency field service repairs as needed during snow operations. * Assist with fabrication ...

Cox Fleet

Lead Mobile Diesel Technician

Manassas, VA

Mentor Mobile Diesel Technicians I/II/Sr on best practices and techniques to stay within or close to most Standard Repair Times. * Assist Mobile Tech Manager (MTM) with Quality Control Inspections on ...

Abacus Solution Group

Diesel Mechanic

Beltsville, MD · On-site

$25.25 - $33.50/hr

Perform or assist with engine rebuilds and dumpster repairs (including welding). * Leadership Track: Collaborate with ownership to improve maintenance workflows and safety protocols. What We're ...

Instant Serve LLC

Diesel Engine Mechanic

Clinton, MD · On-site

$35 - $40/hr

Diesel Engine Mechanic Location: Capitol Heights, MD Salary: $35/hr + Benefits Full-Time Role ... This is a dedicated line designed exclusively to assist job seekers whose disability prevents them ...

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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 Washington? The most popular types of Diesel jobs in Washington are:
What cities in Washington are hiring for Diesel Assistant jobs? Cities in Washington with the most Diesel Assistant job openings:
Diesel Assistant jobs near you
Infographic showing various Diesel Assistant job openings in Washington as of August 2026, with employment types broken down into 1% As Needed, 75% Full Time, 21% Part Time, 1% Temporary, and 2% Contract. Highlights an 98% Physical, 1% Hybrid, and 1% Remote job distribution.

Diesel Technician

Accel Talent Group

Washington, DC • On-site

$23 - $38/hr

Full-time

Re-posted 22 days ago

Job description

Heavy Duty Diesel Technician / Diesel Mechanic
Competitive Pay and Benefits
Washington DC Metro Area | Shop & Mobile Positions Available
Join a Growing Team with a State-of-the-Art Facility!
We are actively hiring Entry-Level, Mid-Level, and Master Diesel Technicians to join our growing team. If you are passionate about diesel repair, heavy-duty trucks, buses, fleet maintenance, diagnostics, and hands-on mechanical work, we want to hear from you!
Our company offers:
  • Competitive Pay
  • Career Growth Opportunities
  • Modern State-of-the-Art Facility with Heated Floors
  • Best-in-Class Training & Development
  • Stable Full-Time Work with Overtime Available

We are looking for motivated team players with strong work ethic, mechanical aptitude, and a commitment to delivering excellent customer service.
Position Overview
As a Heavy Duty Diesel Technician / Diesel Mechanic, you will diagnose, troubleshoot, repair, and perform preventative maintenance on a variety of diesel-powered trucks, buses, and heavy equipment. Both shop technician and mobile diesel mechanic positions are available.
This role is ideal for candidates with experience in:
  • Diesel engines
  • Fleet maintenance
  • Heavy-duty truck repair
  • Bus repair
  • Preventative maintenance (PM)
  • Electrical systems
  • Hydraulics
  • Brakes and driveline systems
  • Mobile service repair

Key Responsibilities
  • Diagnose and troubleshoot diesel trucks and buses
  • Perform preventative maintenance inspections and services (PMs)
  • Repair and maintain diesel engines, brakes, drivetrains, hydraulics, transmissions, and electrical systems
  • Read technical manuals and repair documentation
  • Remove and replace parts efficiently within standard repair times
  • Complete accurate service and repair documentation
  • Maintain clean and safe work areas
  • Operate mobile equipment and perform road service calls when needed
  • Communicate effectively with drivers, operators, and team members
  • Follow all company safety procedures and guidelines
  • Assist with parts inventory and supply management

Qualifications
Required:
  • High School Diploma or GED
  • Minimum 2 years of heavy-duty diesel or fleet maintenance experience
  • Ability to diagnose and repair diesel systems
  • Ability to read and write in English
  • Ability to work overtime as needed

Preferred:
  • Diesel Technology Certification or Trade School Training
  • CDL (Commercial Driver's License)
  • Experience with fleet maintenance software and diagnostics
  • Experience with multiple makes and models of trucks and buses

Skills & Experience
Ideal candidates will have knowledge of:
  • Diesel engine repair
  • Electrical diagnostics
  • Hydraulics
  • Brake systems
  • Power transmissions
  • Driveline systems
  • Preventative maintenance programs
  • DOT inspections
  • Mobile diesel repair

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