Field Mechanic

Martin Marietta Materials, Inc.; Denver (CO); On-site; USD 50,000 - 70,000; Full time

Job summary

Martin Marietta Materials, Inc. is seeking a diligent Field Mechanic to perform maintenance and repairs on asphalt plant equipment and heavy machinery. This role requires traveling to various plant sites and ensuring optimal operational uptime while adhering to strict safety standards.

Ideal candidates will have 1+ years of experience in heavy equipment maintenance, with a preference for asphalt knowledge. The position involves both mechanical and electrical repairs, demanding a robust skill set and a commitment to safety.

Qualifications

• 1+ years of experience in Heavy Equipment Maintenance, preferably with CAT, Komatsu, Volvo, or John Deere.
• Asphalt experience is preferred.

Responsibilities

• Inspect, diagnose, and repair asphalt plant components.
• Perform skilled mechanical repairs on diesel-powered mobile equipment.
• Utilize cutting torches and welders for field fabrication.
• Execute scheduled PM services and lubrication protocols.
• Conduct oil sampling and pressure testing.
• Maintain accurate documentation of work performed.
• Perform troubleshooting of hydraulic and electrical systems.
• Use diagnostic tools to analyze engine performance.
• Interpret technical manuals and schematics for repairs.
• Participate in safety initiatives and inspections.

Skills

Mechanical analysis

Design tools

Mechanical controls

Mechanical diagrams and blueprints

Mechanical theory

Education

Vocational training or relevant experience

Job description

The Field Mechanic is a critical role responsible for the high-level maintenance, diagnostic troubleshooting, and repair of both stationary asphalt plant equipment, mobile heavy machinery, and on-road assets. This position operates primarily in the field, traveling to various plant sites to ensure maximum operational uptime and efficiency.

As a key member of the maintenance team, the Field Mechanic must embody Martin Marietta’s ‘Safety First’ culture, prioritizing a zero‑incident environment while performing complex mechanical, hydraulic, and electrical repairs. The role requires a highly motivated individual capable of working independently in various outdoor environments to support the production of hot mix asphalt materials.

Key Duties and Responsibilities

• Inspect, diagnose, and repair asphalt plant components, including conveyor systems, shakers, screens, pumps, gearboxes, crushers, and burners.
• Perform skilled mechanical repairs on diesel‑powered mobile equipment (loaders, haul trucks, pavers) including engine rebuilds, transmission repairs, and the removal/installation of major mechanical parts.
• Utilize cutting torches, welders (MIG/TIG/Stick), and grinders to perform field fabrication, structural repairs, and equipment modifications.
• Execute scheduled PM services and lubrication protocols according to manufacturer specifications and Martin Marietta’s Maintenance Module.
• Conduct oil sampling, filter changes, and pressure testing to identify potential failures before they occur.
• Maintain accurate electronic and paper documentation of all work performed, materials used, and equipment health status.
• Perform intermediate to advanced troubleshooting of hydraulic, pneumatic, and electrical systems.
• Use diagnostic software and tools (CAT ET, scanners) to analyze engine performance and system faults on modern heavy equipment.
• Interpret technical manuals, blueprints, and hydraulic/electrical schematics to execute precise repairs.
• Actively participate in all safety initiatives, including SLAM (Stop, Look, Analyze, Manage) and pre‑shift safety inspections of work areas and equipment.
• Conduct mandatory OSHA pre‑shift safety inspections of work areas and equipment.
• Strictly adhere to Lock‑Out/Tag‑Out (LOTO) procedures and all company safety initiatives (Guardian Angel Creed).
• Actively participate in the hazard recognition program by documenting near‑misses and implementing safety improvements.
• Maintain a clean and organized service truck and work area to prevent hazards and ensure environmental compliance.
• Collaborate with Plant Managers and Superintendents to prioritize backlogs and minimize production downtime.
• Operate support equipment such as cranes, man‑lifts, loaders, and haul trucks in a safe and efficient manner.
• Mentor and coach junior maintenance staff and plant operators on best practices for equipment care and minor repairs.

Qualifications

Education

• Vocational training or relevant experience

Work Experience

• 1+ years of experience in Heavy Equipment Maintenance specifically with brands such as CAT, Komatsu, Volvo, or John Deere. Asphalt experience is preferred.

Knowledge, Skills, and Abilities

• Mechanical analysis
• Design tools
• Mechanical controls
• Mechanical diagrams and blueprints
• Mechanical theory