Diesel Mechanic

System One; Manassas (VA); On-site; USD 48,000 - 72,000; Full time

Benefits offered by this job

401(k)

Health insurance

Dental insurance

Vision insurance

Life insurance

Paid time off

Career advancement and training

Job summary

System One is seeking a Diesel Mechanic for heavy-duty maintenance and repair of a diverse fleet, including transit coaches. The role focuses on diesel engine diagnostics, preventive maintenance, and safe operation in a 24/7 environment.

Candidates should have 3–5 years of progressive diesel mechanics experience, a high school diploma or GED, and the ability to obtain a Virginia CDL. Strong troubleshooting and record-keeping skills are essential.

Qualifications

• 3–5 years of progressive experience in diesel mechanics or heavy equipment maintenance
• Must pass pre-employment drug test and background check
• Valid Virginia driver’s license and ability to obtain a Virginia CDL
• Excellent communication, troubleshooting, and time management skills

Responsibilities

• Diagnose and repair diesel engines, fuel systems, and electrical components
• Perform in-shop and roadside repairs using diagnostic software
• Conduct preventive maintenance inspections at scheduled intervals
• Maintain detailed service records of repairs and parts
• Operate safely in a 24/7 environment and perform road tests

Skills

Diesel mechanics

Diesel engine diagnostics

Troubleshooting

Time management

Education

High School diploma or GED

Post-secondary diesel training

Tools

Cummins Insite

Allison Prognostics

VANSCO

DINEX

Job description

Diesel Mechanic – Heavy-Duty Diesel Vehicle Maintenance and Repair

We are actively seeking a skilledDiesel Mechanicwith hands-on experience in maintaining and repairing a diverse fleet of heavy-duty diesel vehicles, including transit coaches. If you specialize indiesel engine diagnostics, repair, and preventive maintenance, this role offers an excellent opportunity to work in a fast-paced, 24/7 environment ensuring our diesel-powered fleet remains safe, reliable, and compliant.

Expertly diagnose and repair issues related todiesel engines, diesel fuel systems, diesel electrical components, diesel hydraulic systems, air conditioning, brakes, suspension, and other mechanical systems.

Conduct both in-shop and roadside diesel vehicle repairs using advanced diagnostic software such as Cummins Insite, Allison Prognostics, VANSCO, and DINEX.

Repair and maintain ADA equipment, fire suppression systems, and critical safety components on diesel-powered vehicles.

Perform diesel engine upgrades, modifications, and parts fabrication as specified by manufacturers and client requirements.

Conduct thorough road tests to verify proper diesel vehicle performance and safety.

Execute preventive maintenance inspections on diesel vehicles at scheduled mileage/time intervals using standardized checklists to ensure compliance.

Maintain detailed records of all diesel repairs, parts usage, diagnostics, and labor.

3–5 years of progressive experience indiesel mechanicsor heavy equipment diesel maintenance.

High School diploma or GED required; post-secondary technical training in diesel mechanics or related fields preferred.

Physical capability to lift up to 75 lbs and work on top of diesel vehicles.

Proficiency with diesel diagnostic computer equipment and technical manuals.

Valid driver’s license and ability to obtain a Virginia Commercial Driver’s License (CDL).

Must pass pre-employment drug test, background check, and physical examination.

Availability to work flexible shifts in a 24/7 operational environment.

Skills & Expertise:

Excellent communication, troubleshooting, and time management skills.

Ability to work independently with minimal supervision in a high-volume diesel repair setting.

Comprehensive 401(k), health, dental, vision, and life insurance plans.

Paid time off.

Opportunities for ongoing career advancement and diesel-specific technical training.

System One, and its subsidiaries including Joulé, ALTA IT Services, and Mountain Ltd., are leaders in delivering outsourced services and workforce solutions across North America. We help clients get work done more efficiently and economically, without compromising quality. System One not only serves as a valued partner for our clients, but we offer eligible employees health and welfare benefits coverage options including medical, dental, vision, spending accounts, life insurance, voluntary plans, as well as participation in a 401(k) plan.


System One is an Equal Opportunity Employer. All qualified applicants will receive consideration for employment without regard to race, color, religion, sex (including pregnancy, childbirth, or related medical conditions), sexual orientation, gender identity, age, national origin, disability, family care or medical leave status, genetic information, veteran status, marital status, or any other characteristic protected by applicable federal, state, or local law.


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Ref: #260-Eng NY Transit