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Diesel Assistant Jobs in Washington (NOW HIRING)

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 ...

United Rentals

Diesel Mechanic

Manassas, VA

$29.80 - $44.65/hr

Safe maintenance and repair of a variety of complex rental equipment involving mechanical, electrical, hydraulic, and diesel systems * Assist in the training of lower level technicians as needed

United Rentals, Inc.

Diesel Mechanic

Glen Burnie, MD · On-site

$25.95 - $37.35/hr

As a Diesel Mechanic (Service Tech II), you'll use your skills to perform maintenance, preventive ... Demonstrate a wide array of complex equipment for customers * Assist with pick-up and delivery of ...

United Rentals - French

Diesel Mechanic

Manassas, VA · On-site

$29.80 - $44.65/hr

Safe maintenance and repair of a variety of complex rental equipment involving mechanical, electrical, hydraulic, and diesel systems Assist in the training of lower level technicians as needed ...

United Rentals

Diesel Mechanic

Manassas, VA · On-site

$29.80 - $44.65/hr

Safe maintenance and repair of a variety of complex rental equipment involving mechanical, electrical, hydraulic, and diesel systems Assist in the training of lower level technicians as needed ...

United Rentals - French

Diesel Mechanic

Annapolis, MD · On-site

$26.45 - $48.95/hr

As a Diesel Mechanic - Experienced (Service Tech IV), you'll use your skills to perform maintenance ... Assist in the training of lower level technicians as needed Maintain paperwork/electronic ...

United Rentals

Diesel Mechanic

Sterling, VA

$29.80 - $44.65/hr

Safe maintenance and repair of a variety of complex rental equipment involving mechanical, electrical, hydraulic, and diesel systems Assist in the training of lower level technicians as needed ...

United Rentals

Diesel Mechanic

Annapolis, MD

$26.45 - $48.95/hr

As a Diesel Mechanic - Experienced (Service Tech IV), you'll use your skills to perform maintenance ... manner * Assist in the training of lower level technicians as needed * Maintain paperwork ...

United Rentals

Diesel Mechanic

Glen Burnie, MD · On-site

$25.95 - $46.05/hr

Safe maintenance and repair of a variety of complex rental equipment involving mechanical, electrical, hydraulic, and diesel systems Assist in the training of lower level technicians as needed ...

United Rentals

Diesel Mechanic

Sterling, VA

$29.80 - $44.65/hr

Safe maintenance and repair of a variety of complex rental equipment involving mechanical, electrical, hydraulic, and diesel systems * Assist in the training of lower level technicians as needed

United Rentals, Inc.

Diesel Mechanic

Manassas, VA · On-site

$29.80 - $44.65/hr

Safe maintenance and repair of a variety of complex rental equipment involving mechanical, electrical, hydraulic, and diesel systems * Assist in the training of lower level technicians as needed

United Rentals - French

Diesel Mechanic

Manassas, VA · On-site

$29.80 - $44.65/hr

Safe maintenance and repair of a variety of complex rental equipment involving mechanical, electrical, hydraulic, and diesel systems Assist in the training of lower level technicians as needed ...

United Rentals, Inc.

Diesel Mechanic

Annapolis, MD · On-site

$26.45 - $48.95/hr

As a Diesel Mechanic - Experienced (Service Tech IV), you'll use your skills to perform maintenance ... manner * Assist in the training of lower level technicians as needed * Maintain paperwork ...

United Rentals, Inc.

Diesel Mechanic

Sterling, VA · On-site

$29.80 - $44.65/hr

Safe maintenance and repair of a variety of complex rental equipment involving mechanical, electrical, hydraulic, and diesel systems * Assist in the training of lower level technicians as needed

United Rentals

Diesel Mechanic

Annapolis, MD

$26.45 - $48.95/hr

As a Diesel Mechanic - Experienced (Service Tech IV), you'll use your skills to perform maintenance ... Assist in the training of lower level technicians as needed Maintain paperwork/electronic ...

United Rentals - French

Diesel Mechanic

Annapolis, MD · On-site

$26.45 - $48.95/hr

As a Diesel Mechanic - Experienced (Service Tech IV), you'll use your skills to perform maintenance ... Assist in the training of lower level technicians as needed Maintain paperwork/electronic ...

United Rentals - French

Diesel Mechanic

Glen Burnie, MD · On-site

$25.95 - $46.05/hr

Safe maintenance and repair of a variety of complex rental equipment involving mechanical, electrical, hydraulic, and diesel systems Assist in the training of lower level technicians as needed ...

United Rentals

Diesel Mechanic

Manassas, VA

$29.80 - $44.65/hr

Safe maintenance and repair of a variety of complex rental equipment involving mechanical, electrical, hydraulic, and diesel systems * Assist in the training of lower level technicians as needed

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All JobsDiesel JobsDiesel Assistant JobsDiesel Assistant Jobs in Washington

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 Engine Mechanic

Instant Serve LLC

Clinton, MD • On-site

$35 - $40/hr

Full-time

Re-posted 2 days ago

Job description

Position: Diesel Engine Mechanic
Location: Capitol Heights, MD
Salary: $35/hr + Benefits 
Full-Time Role/Direct-Hire
 
Job Description:
Experience in heavy equipment maintenance and repair. Strong knowledge of hydraulic systems, air brake systems, and is comfortable maintaining accurate service records. This role requires a dependable, detail-oriented professional who can work independently and as part of a team.
Key Responsibilities:
Diagnose, repair, and maintain a wide range of vehicles and heavy equipment.
Perform work on hydraulic systems and air brake systems.
Conduct preventative maintenance and inspections.
Troubleshoot mechanical and electrical issues efficiently.
Maintain accurate service and repair records.
Ensure all work meets safety and compliance standards.
Communicate effectively with supervisors and team members.
 
Qualifications:
High school diploma or equivalent required
A-Level mechanic certification or equivalent experience
Proven experience with heavy equipment (construction, fleet, or similar)
Strong knowledge of hydraulics and air brake systems
Ability to read and interpret technical manuals and schematics
Good record-keeping and organizational skills
Valid driver’s license (CDL preferred, if applicable)
Ability to lift heavy equipment and work in a physically demanding
 
Preferred Skills:
Welding or fabrication experience
CDL certification
Experience with diesel engines
 

InstantServe is Proud to be an EOE and will consider all applications without regard to race, genetic information, sex, age, color, religion, national origin, veteran status, disability, or any other characteristic protected by law.   Applicants with disabilities that require accommodation or assistance in a position please call 202-701-1667 or email  contact@iserveworld.com. This is a dedicated line designed exclusively to assist job seekers whose disability prevents them from being able to apply online. 

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About InstantServe

Sourced by ZipRecruiter

InstantServe provides a one-stop solution to all Healthcare, IT/Non-IT Staffing needs. Established in 2016, InstantServe is a strong workforce of over 100+ go-getters with a demonstrated background in IT/Non-IT service. We are a nationally certified SBE from the Department of Administration (State of PA). As a proud Minority Woman Owned Small Business Enterprise (M/WBE), InstantServe boasts of a strong team of professionals who have extensive experience catering to several Federal, Public, Commercial, and Healthcare Clients which includes 26 States and 46 government agencies. InstantServe is a client-centric organization that offers cost-effective and reliable solutions. Client satisfaction is sacrosanct! Our team strives to provide the best staffing and IT solutions to take your business to the next level.

Industry

Recruiting and staffing services

Company size

11 - 50 Employees

Headquarters location

Wayne, PA, US

Year founded

2016

Social media

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