Lead Mobile Mechanic — CAT/Komatsu Expert

Martin Marietta Materials, Inc.; Idaho Springs (CO); On-site; USD 52,000 - 90,000; Full time

Benefits offered by this job

Medical Insurance

401(k) with company match

Pension

Job summary

Martin Marietta Materials, Inc. seeks a Master Mobile Mechanic to lead and repair heavy mobile equipment across multiple sites. You will diagnose complex issues, mentor mechanics, and drive fleet performance while ensuring safety and adherence to MSHA and company standards.

The role emphasizes expert troubleshooting, rebuilds, welding, calibration, and documentation to keep equipment meeting manufacturer specifications and production needs.

Qualifications

• Vocational training or equivalent experience.
• Advanced technical certifications in diesel mechanics, hydraulics, or welding preferred.

Responsibilities

• Perform expert-level troubleshooting on diesel engines, hydraulic systems, electrical circuits, and drivetrains for heavy mobile equipment (loaders, haul trucks, dozers, excavators).
• Lead root-cause analysis for recurring mechanical failures and implement corrective actions to prevent downtime.
• Coordinate complex repair projects and ensure compliance with safety and quality standards.

Skills

Troubleshooting

Diesel engines

Hydraulics

Electrical systems

Drivetrains

CAT maintenance

Mentoring

MSHA compliance

Education

Vocational training

Advanced technical certifications in diesel mechanics

Welding certification (preferred)

Tools

CAT Electronic Technician

Komatsu KOMTRAX/Komatsu Care

Job description

Martin Marietta Materials, Inc. seeks a Master Mobile Mechanic to lead and repair heavy mobile equipment across multiple sites. You will diagnose complex issues, mentor mechanics, and drive fleet performance while ensuring safety and adherence to MSHA and company standards.

The role emphasizes expert troubleshooting, rebuilds, welding, calibration, and documentation to keep equipment meeting manufacturer specifications and production needs.