Senior Fleet Diesel Mechanic — Diagnostics & PM

Dollar General; Florida; On-site; USD 52,000 - 75,000; Full time

Job summary

Dollar General is seeking a diesel fleet maintenance technician to inspect and repair heavy diesel trucks, trailers, and yard equipment in a fast-paced environment. You will diagnose diesel engines, electrical, braking, and HVAC systems, perform preventive maintenance and ensure compliance with DOT regulations.

The role requires 2+ years in diesel maintenance, strong problem-solving abilities, and effective communication to support drivers and maintenance teams across fleet operations.

Qualifications

• 2+ years of Diesel Maintenance Repair experience.
• Experience with air brake, hydraulic and electrical systems.
• Broad understanding of fleet maintenance policies and FMCSA standards.
• Ability to work unsupervised and make decisions.
• Effective communicator and team player.

Responsibilities

• Inspect, repair and diagnose diesel engines and propulsion components with some assistance.
• Perform electrical system repairs and complete vehicle diagnosis.
• Conduct preventive maintenance on tractors and trailers.
• Maximize safety and reliability of fleet vehicles.
• Assist drivers with outstanding vehicle issues.
• Perform DOT inspections and comply with regulations.

Skills

Heavy diesel mechanic

Diesel maintenance

Air brake systems

Electrical systems

Hydraulic systems

FMCSA standards

Communication

Teamwork

Tools

Trailer maintenance software

Job description

Dollar General is seeking a diesel fleet maintenance technician to inspect and repair heavy diesel trucks, trailers, and yard equipment in a fast-paced environment. You will diagnose diesel engines, electrical, braking, and HVAC systems, perform preventive maintenance and ensure compliance with DOT regulations.

The role requires 2+ years in diesel maintenance, strong problem-solving abilities, and effective communication to support drivers and maintenance teams across fleet operations.