Diesel Technician I

Salary: Depends on Qualifications
Location : Houston, TX
Job Type: Regular Full-time
Job Number: 16845
Department: Commissioner Precinct 3
Opening Date: 06/23/2026
Closing Date: 7/23/2026 11:59 PM Central
Max Number of Applicants: 100


Position Description
Under general supervision, performs preventive maintenance, inspections, diagnostics, and repairs on Harris County-owned vehicles and equipment in accordance with County policies, safety standards, and OEM specifications. Ensures fleet assets remain safe, reliable, and available for operational use.
Duties & Responsibilities

• Technicians may work on passenger vehicles, light-duty trucks and SUVs, medium-duty trucks, heavy-duty diesel trucks, trailers, construction and public works equipment, agricultural and grounds maintenance equipment, and small engine equipment.
• Diagnosing Mechanical Problems: Using diagnostic tools and knowledge of automotive systems to identify issues.
• Perform preventive maintenance and inspections.
• Diagnose, troubleshoot, and perform high-quality repairs with a "fix it right the first time" approach.
• Conduct quality control inspections on vendor repairs.
• Prepare estimates and communicate with Service Coordinators and Parts personnel.
• Utilize OEM scan tools and fleet software.
• Support various shops based on operational needs.
• Replacing Parts: Removing and replacing worn or damaged parts, including engines, transmissions, brakes, and electrical components.
• Road Testing: Conducting road tests to ensure repairs are complete and vehicles are operating safely.
• Conducting Inspections: Performing routine inspections of vehicles and equipment to identify potential problems.
• Lubricating and Servicing: Lubricating moving parts, changing fluids, and performing other routine maintenance tasks.
• Assisting with Roadside Service: Providing assistance to disabled vehicles and equipment.
• May Operate a Forklift: Depending on the specific job requirements, a mechanic may be required to operate a forklift.
• May Assist with Other Tasks: Depending on the specific job requirements, a mechanic may be required to assist with other tasks, such as cleaning the shop or ordering parts. Maintain a safe, clean, and organized work environment.
• Harris County PCT3 Fleet Services provides specialty tools and diagnostic equipment. Employees are expected to provide a basic set of mechanic hand tools.
• May be required to respond during emergencies, disasters, severe weather events, and other operational incidents, including working extended hours, weekends, holidays, and after-hours callouts.

Harris County is an Equal Opportunity Employer


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This position is subject to a criminal history check. Only relevant convictions will be considered and, even when considered, may not automatically disqualify the candidate.

Requirements
Education:

• High school diploma or GED.

Experience:

• Minimum of one year of dealership, fleet, diesel, or automotive repair experience.
• Automotive Technology education may be considered for experience.

Licensure:

• Valid Texas Driver's License required.
• CDL is not required at the time of hire; however, employees must be able to obtain a CDL through Harris County once employed.

Knowledge, Skills and Abilities

• Technical Skills: Strong mechanical aptitude and knowledge of automotive systems.
• Diagnostic Skills: Ability to diagnose mechanical problems accurately and efficiently.
• Problem-Solving Skills: Ability to identify and resolve mechanical issues.
• Communication Skills: Ability to communicate effectively with supervisors, colleagues, and customers.
• Organizational Skills: Ability to organize work tasks and maintain records accurately.

NOTE : Qualifying education, experience, knowledge and skills must be documented in your job application. You may attach a resume to the application as supporting documentation but ONLY information stated on the application will be used for consideration. "See Resume" will not be accepted for qualifications.

Preferences

• ASE (Automotive Service Excellence) Certifications
• OEM manufacturer training and certifications
• Commercial Driver's License (CDL)
• Experience with diesel, heavy duty, construction, public works, agricultural, and small engine equipment
• Welding and fabrication experience
• Experience utilizing OEM diagnostic software and scan tools

General Information
Position Type and Typical Hours of Work:

• Monday - Friday; 6:00 am - 2:30 pm
• Occasional overtime may be required.

Physical Demands:

• Frequently lifts and carries up to 50 pounds and occasionally lifts up to 100 pounds with assistance.
• Requires standing, walking, bending, kneeling, crouching, climbing, reaching, and working in confined spaces for extended periods. May be required to work outdoors in varying weather conditions.

Work Environment:

• Work is performed in a fleet maintenance facility, garage environment, and outdoors in varying weather conditions.
• Employees may be exposed to heat, cold, humidity, rain, dust, noise, vibration, exhaust fumes, fuels, oils, lubricants, cleaning chemicals, and other materials commonly associated with vehicle and equipment maintenance and repair.
• Duties may require working around moving vehicles, heavy equipment, hydraulic systems, electrical systems, and powered tools.
• Employees may be required to work in confined spaces, in uneven terrain, and in areas with limited comfort from weather conditions.
• This position may require response during emergencies, disasters, severe weather events, and other operational incidents, including extended work hours, weekends, holidays, and after-hours callouts.

Employment may be contingent on passing a drug screen and meeting other standards.

Due to a high volume of applications positions may close prior to the advertised closing date or at the discretion of the Hiring Department.

HARRIS COUNTY EMPLOYEE BENEFITS

Harris County offers a highly competitive benefits program, featuring a comprehensive group health plan and defined benefit retirement plan.
The following benefits are offered only to Harris County employees in regular (full-time) positions:
Health & Wellness Benefits

• Medical Coverage
• Dental Coverage
• Vision Coverage
• Wellness Plan
• Life Insurance
• Long-Term Disability (LTD) Insurance
• Employee Assistance Program (EAP)
• Healthcare Flexible Spending Account
• Dependent Care Flexible Spending Account

Paid Time Off (PTO)

• Ten (10) days of vacation leave per year (accrual rate increases after 5 years of service)
• Eleven (11) County-observed holidays
• One (1) floating holiday per year
• Paid Parental Leave*
• Sick Leave

Retirement Savings Benefit

• 457 Deferred Compensation Plan

The following benefits are available to Harris County employees in full-time and select part-time positions:

• Professional learning & development opportunities
• Retirement pension (TCDRS defined benefit plan)
• Flexible work schedule*
• METRO RideSponsor Program*

* Participation may vary by County department. The employee benefits plans of Harris County are extended to all eligible participants across various departments with the exception of the Harris County Community Supervision and Corrections Department, for which the cited Health & Wellness Benefits are administered through the State of Texas.
In accordance with the Harris County Personnel Regulations, group health and related benefits are subject to amendment or discontinuance at any time. Harris County Commissioners Court reserves the right to make benefit modifications on the County's behalf as needed.
For plan details, visit the Harris County Benefits & Wellness website:
01


Which of the following best describes your highest level of education completed as it relates to this position?Qualifying information must be documented in the Education section of your application.

• High School or GED diploma
• Associate Degree
• Bachelor's Degree
• Master's Degree or higher
• None of the above

02


Which of the following best describes your verifiable dealership, fleet, diesel, or automotive repair experience?(To be considered, qualifying experience must be documented in your application's employment history)

• Less than one (1) year
• One (1) year but less than two (2) years
• Two (2) years but less than three (3) years
• Three (3) years or more
• I do not have this experience

03


Please provide the dates of employment during which you obtained experience working in dealership, fleet, diesel, or automotive repair. Provide the month and year that began and ended the experience ( Example: "January 2020 - December 2025" ) If this experience is not clearly documented in the Work Experience section, your application will be disqualified. If you do not have this experience, type "N/A" in the space provided.
04


Do you have an Automotive Service Excellence (ASE) certification?

• Yes
• No

05


Do you have an Original Equipment Manufacturer (OEM) manufacturer training and certifications?

• Yes
• No

06


For this position, a valid Commercial Driver's License is necessary. Please choose the option that best describes your situation:(Please be sure to include all related details in the Certificates and Licenses section of your application.)

• Yes, I have a valid Texas Commercial Driver's License (CDL) "Class B"
• Yes, I have a valid Texas Commercial Driver's License (CDL) "Class A"
• No, I do not currently have a Commercial Driver's License, but I commit to obtaining one within 3 months of employment.
• No, I do not have a valid Texas Commercial Driver's License (CDL) "Class B" or "Class A"

Required Question