Fleet Diesel Mechanic

Bosun•Gillette, WY

8d•Onsite

About The Position

On behalf of our client, we are seeking an experienced Fleet Diesel Mechanic to join a growing team in Gillette, Wyoming. This is a hands-on shop position focused on diagnosing, repairing, and maintaining the company's fleet of diesel trucks, semi-trucks, trailers, and support vehicles. The goal is simple: when a truck leaves the shop, it needs to be safe, reliable, and ready to work. You'll be responsible for troubleshooting mechanical issues, completing repairs, and staying ahead of preventative maintenance to help minimize downtime across the fleet. This position is primarily focused on diesel trucks and fleet vehicles rather than large heavy construction equipment. There may be opportunities to work on smaller support equipment such as pumps, light plants, forklifts, and similar equipment as needed. We're looking for a strong mechanic first. Previous leadership experience is not required. For someone interested in growing professionally, there may be opportunities to take on additional leadership responsibilities over time.

Requirements

2+ years of professional experience repairing diesel trucks, semi-trucks, fleet vehicles, or similar equipment; 3–5+ years preferred
Strong diesel mechanical knowledge and diagnostic ability
Experience troubleshooting and repairing diesel engines, transmissions, electrical systems, brakes, steering, suspension, fuel systems, and/or hydraulics
Ability to read and interpret service manuals, schematics, and wiring diagrams
Strong mechanical troubleshooting and problem-solving skills
Attention to detail and commitment to completing repairs correctly
Ability to work independently and as part of a shop team
Ability to prioritize work in a fast-paced maintenance environment
Must supply and maintain personal mechanic hand tools
Must be able to meet company drug and alcohol testing requirements

Nice To Haves

Experience working on Peterbilt, Kenworth, Freightliner, Western Star, Cummins, Detroit, CAT, or similar trucks and diesel engines
Technical training in diesel technology, medium/heavy truck repair, automotive technology, or a related field
CDL
ASE Medium/Heavy Truck certifications
Experience performing DOT inspections
Experience using electronic diagnostic software and maintenance/work-order systems
Basic welding and fabrication experience
Interest in mentoring others or growing into future leadership responsibilities
Equivalent hands-on work experience may be considered in place of formal certifications or technical education.

Responsibilities

Diagnose, troubleshoot, maintain, and repair diesel trucks, semi-trucks, trailers, and support vehicles.
Work on fleet equipment including Peterbilt, Kenworth, Freightliner, Western Star, and similar trucks.
Diagnose and repair: Diesel engines, Transmissions and drivetrains, Electrical systems, Air and brake systems, Steering and suspension components, Fuel systems, Hydraulic systems.
Perform repairs and maintenance on smaller support equipment such as pumps, light plants, forklifts, and similar equipment as needed.
Use diagnostic equipment, service manuals, schematics, and wiring diagrams to identify and resolve mechanical and electrical issues.
Perform scheduled preventative maintenance to keep fleet vehicles reliable and road-ready.
Complete oil and fluid changes, filter replacements, lubrication, and routine services.
Perform vehicle and equipment inspections.
Complete or support DOT inspections and required fleet maintenance.
Identify potential problems before they result in breakdowns or unnecessary downtime.
Ensure repairs are completed thoroughly and with a strong attention to quality.
Accurately document repairs, inspections, parts used, and preventative maintenance completed.
Assist with parts identification and ordering as needed.
Maintain a clean, safe, and organized work area.
Follow company safety procedures, including proper PPE and lockout/tagout practices.
Work collaboratively with other mechanics and operations personnel to prioritize repairs and keep the fleet moving.
Participate in required safety meetings and training.
Provide and maintain personal mechanic hand tools required to perform the job.