Diesel Mechanic

Department: Operations

Location: A-1 Little John Site Services – Denison, TX 75020

Reports To: DFW North Assistant General Manager

Schedule: Monday – Friday 8a-6p & Saturday as needed. Must be available for 40–50 hours per week. Overtime may be required based on operational needs.

Compensation: $25.00 – $27.00 per hour, based on experience.

A-1 Little John is proud to hire and promote based on Core Values:

• Every team member rides for the brand.
• Every team member demonstrates the grit to complete the job every time.
• Every team member contributes as a team player.
• Every team member is an independent problem solver.
• Every team member respects team members and customers 100% of the time.
• Every team member is conscientious about the details.
• Every team member demonstrates excellent communication skills.
• Every team member is eager to be coached to the next level.

A-1 Little John Site Services, a trusted name in environmental and site services for over 27 years, is seeking a skilled in-house Diesel Mechani
c to support fleet operations at our Denison location and float to other branches as needed. This role is essential to maintaining the safety, reliability, and compliance of our medium- and heavy-duty fleet.

The Diesel Mechanic plays a critical role in minimizing downtime, ensuring DOT compliance
, and supporting operations through disciplined preventative maintenance and quality repairs.

• Perform routine maintenance and mechanical repairs on diesel engines and fleet vehicles.
• Complete full preventative maintenance (PMs) monthly in accordance with company standards.
• Diagnose mechanical issues using schematics, technical manuals, and computerized diagnostic systems.
• Repair or replace defective components including engines, brakes, suspension, and related systems.
• Service and maintain an assortment of medium-duty and heavy-duty day cab trucks.
• Perform welding and fabrication work as needed for equipment repair.
• Conduct heavy lifting tasks required to service large vehicles and components.
• Maintain a clean, organized, and safe shop environment, ensuring proper tool and equipment storage.
• Maintain accurate and detailed DOT repair and maintenance records for all work performed.
• Adhere to all company safety policies, DOT regulations, and environmental standards.

• Proven experience as a Diesel Mechanic with hands-on repair and diagnostic experience.
• Strong mechanical knowledge of diesel engines and fleet systems.
• Ability to read and interpret schematics and technical manuals.
• Familiarity with medium- and heavy-duty vehicle maintenance and repair.
• Welding experience preferred.
• Knowledge of tractor-trailer systems including brakes, suspension, and engine components.
• Ability to safely operate forklifts and shop equipment.
• Strong attention to detail, organization, and documentation.
• Dependable work ethic and commitment to safety and quality workmanship.

• 401(k) with company match.
• Paid time off.
• Employee discounts.
• Steady year-round work with growth potential.
• Family-oriented company culture - employees are treated like family.