Summary
Work History
Education
Skills
TECHNICAL TRAINING
Timeline
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John Toncich

Anna,TX

Summary

Experienced heavy equipment field service technician and U.S. Marine Corps Non-Commissioned Officer with 10+ years of combined military and civilian experience supporting construction, utility, and industrial equipment operations. Strong background in diagnostics, troubleshooting, and repair of hydraulic, electrical, and diesel systems across multiple OEM platforms including Caterpillar-related equipment. Proven ability to operate independently in high-pressure field environments while coordinating repairs, customers, and jobsite priorities.

Work History

Field Service Technician

Primoris Services Corporation
  • Performed field diagnostics and repair on heavy construction and utility equipment
  • Responded to breakdowns in active jobsite environments minimizing equipment downtime
  • Coordinated with supervisors and customers on repair priorities and scheduling
  • Maintained safety compliance in high-risk construction environments

Field Service Technician

Zachry Construction Corporation
  • Diagnosed and repaired heavy construction equipment in field operations
  • Supported large-scale infrastructure projects through equipment readiness and maintenance
  • Communicated equipment status and repair timelines with project management teams
  • Ensured compliance with safety procedures in active jobsite conditions

Field Service Technician

Altec Industries
  • Performed field service and repair on aerial lift and hydraulic equipment systems
  • Troubleshot electrical and hydraulic failures in mobile service units
  • Provided direct customer-facing technical support and repair explanations
  • Ensured equipment met operational safety standards before return to service

Non-Commissioned Officer (E5), MOS 2141

U.S. Marine Corps
  • Led and supervised maintenance personnel responsible for heavy equipment readiness
  • Directed inspections, preventative maintenance, and corrective repairs
  • Trained junior Marines in diagnostics, safety procedures, and mechanical systems
  • Maintained mission-critical equipment readiness under strict operational timelines

Education

High School Diploma -

Ridgway HS
Ridgway, PA

Skills

Heavy Equipment Diagnostics & Field Repair

Hydraulic, Electrical & Diesel Systems

SIS 20, CAT ET proficient

Failure Analysis & Root Cause Diagnostics

Field Service Operations & Work Order Management

Customer Communication & Job Coordination

Preventive Maintenance & Equipment Readiness

Multi-Site Workload Prioritization

Team Leadership & Crew Supervision (E5 USMC)

Safety Compliance (OSHA / Jobsite Standards)

TECHNICAL TRAINING

  • Caterpillar Air Conditioning Systems Certification
  • Caterpillar Failure Analysis Training
  • Heavy Equipment Field Diagnostics
  • Hydraulic & Electrical Systems Troubleshooting

Timeline

Field Service Technician

Primoris Services Corporation

Field Service Technician

Zachry Construction Corporation

Field Service Technician

Altec Industries

Non-Commissioned Officer (E5), MOS 2141

U.S. Marine Corps

High School Diploma -

Ridgway HS

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John Toncich