Heavy Equipment Mechanic at TerraFirma-Inc · LumiJobs
On Site
H1B: no
Responsibilities
Diagnose, repair, and maintain commercial earthworks equipment such as CAT D6/D8 dozers, CAT 336 excavators, and similar heavy civil equipment, both in the shop and on active job sites
Perform routine maintenance including greasing, fluid checks, and scheduled service across the fleet
Fuel equipment on active job sites, including towing and managing a diesel fuel trailer to top off machines during idle periods or between operations
Provide basic maintenance and troubleshooting support for the sensors, wiring, and hardware kits that enable TerraFirma's semi-autonomous equipment
Track equipment condition, maintenance history, and parts inventory to keep the fleet running reliably
Respond quickly and be consistently available to minimize equipment downtime and keep field operations moving
Coordinate with operators and field teams to identify issues early and prioritize repairs
Qualification
Additional Requirements
Required
Proven hands-on experience diagnosing and repairing commercial earthworks equipment such as CAT dozers, excavators, graders, or similar
Comfortable performing both scheduled maintenance and unplanned field repairs independently
Strong working knowledge of diesel engines, hydraulic systems, and heavy equipment electrical systems
Ability to work independently with minimal supervision and prioritize competing maintenance needs
Preferred
Experience maintaining or troubleshooting electronic control systems, sensors, or wiring harnesses on modern equipment
ASE or other relevant heavy equipment/diesel mechanic certifications
Experience running a mobile or field-service maintenance operation, including towing and managing a fuel trailer
Comfortable picking up new technical skills quickly, including basic electronics or sensor-kit troubleshooting
Experience in a fast-growing or startup environment
Additional Requirements
Comfortable working in a fast-paced startup environment
Must be available for on-call or short-notice response to minimize equipment downtime
