p>Key Responsibilities: Perform complex diagnostics, troubleshooting, and preventive maintenance tasks including, but not limited to, tire replacements/flat repairs, brake repairs, electrical diagnostics, and basic structural repairs on tractor and trailer equipment. 18 years of age for equipment up to 10,000 lbs or 21 years of age for equipment over 10,000 lbs with 3 years of experience in semi-tractor or semi-trailer maintenance and repair, or equivalent combination of education and experience, and/or military equivalent experience.