Job Description

Overview

As a Mobile Mechanic at Martin Marietta, you will ensure the safe and efficient operation of diesel-powered mobile equipment across various sites. Your mechanical skills will support production goals while adhering to safety and compliance standards.

Responsibilities

  • Diagnose and troubleshoot mechanical, hydraulic, and electrical system failures on diesel-powered heavy equipment.
  • Perform scheduled preventative maintenance, including oil and filter services, lubrication, and brake and driveline inspections.
  • Perform welding and fabrication as needed while adhering to safety policies.
  • Oversee major and mini mobile equipment maintenance and address gaps to supervisor.
  • Rebuild components, install replacement parts, and execute intermediate repairs with minimal supervision.
  • Read and interpret technical manuals, schematics, and wiring diagrams for accurate repairs.
  • Use hand and power tools, pressure and electrical test equipment to verify equipment performance.
  • Conduct pre-shift safety inspections in accordance with MSHA and company guidelines.
  • Maintain and manage parts inventories; order supplies in a timely manner to minimize downtime.
  • Operate haul trucks and loaders as needed to support repair and maintenance activities.
  • Mentor and train junior technicians or less-experienced mechanics.
  • Collaborate with shop supervisors to prioritize work orders and organize field maintenance tasks.
  • Ensure all repair documentation and inspection reports are completed accurately and submitted on time.

Requirements

  • Vocational or Technical Training.
  • 2+ years of related Mobile Equipment Maintenance experience, preferred.
  • Welding and metalworking skills.
  • Mechanical analysis and troubleshooting skills.
  • Knowledge of MSHA compliance and regulations.
  • Detail oriented and strong time management skills.

Benefits

  • Health Insurance
  • Dental
  • Vision
  • PTO
  • 401k

Additional Information

  • Must be able to lift and carry up to 50 lbs.
  • Required to bend, stoop, climb, and reach.
  • Work in various weather conditions and areas with noise levels up to 85 dbs.

Benefits

Health Insurance
Dental
Vision
PTO
401k

How this job compares in Rancho Santa Margarita, CA

Pay in context

At roughly $48/hr, this posting sits about 48% above the $32/hr median for welding jobs across California — toward the top of a $27–$39/hr middle band drawn from 337 postings with published pay. Put another way, it pays more than about 86% of the comparable postings we have wage data for. Pay that far above local median usually comes attached to something: a harder cert requirement, travel, night shift, or overtime that isn't really optional. Worth establishing which before you accept.

The local market in Rancho Santa Margarita, CA

This is the only active welding job we're currently tracking in Rancho Santa Margarita, CA, which makes it worth moving on quickly — there is no local competing offer to weigh it against. Across California as a whole we're tracking 434 other active welding openings from 217 employers. Browse welding jobs across California.

Martin Marietta currently has 1 other opening live in California, which is usually a sign of either steady growth or steady turnover — worth asking which in the interview.

The most active employers in California at the moment, by number of open welding reqs, are SpaceX (26), Aerotek (16), and Volt (16). Volume like that usually means either a genuine expansion or a staffing agency working several client sites — worth knowing which before you apply.

Within California, the best-paying metros we track by median hourly rate are Santa Ana at $48/hr, Long Beach at $42/hr, and Los Angeles at $38/hr. If you can relocate or commute, that spread is worth factoring in.

Similar openings near Rancho Santa Margarita, CA

Pay figures are medians computed from live postings in the Welding Pros index, not from survey data, and they move as employers post. Mobile Equipment Mechanic figures were last recalculated when this page was built.