Onsite Diesel Mechanic — Truck Equipment & Diagnostics

Custom Truck One Source; Alexandria (LA); On-site; USD 52,000 - 78,000; Full time

Benefits offered by this job

Medical insurance

Dental insurance

Vision insurance

401(k) match

Paid vacation

Sick time

Holidays

Short/long-term disability

Employee stock purchase plan

Uniforms allowance

Tool discounts

Job summary

Custom Truck One Source is seeking a Field Mechanic to diagnose, repair, and maintain truck-mounted equipment across the Louisiana Gulf Coast. Most work is on customer sites with occasional shop support.

You will troubleshoot hydraulic, mechanical, and electrical systems, read schematics, use diagnostic software, and document repairs. Valid driver’s license required; CDL preferred; bring your own tools and join a safety‑driven team.

Qualifications

• High school diploma or GED required.
• 5+ years of related field or shop experience.
• Valid driver's license; CDL Class B preferred.
• Must provide your own mechanic tools.
• Proficiency with documentation software and time management.

Responsibilities

• Diagnose, repair, and maintain truck-mounted equipment at customer sites.
• Troubleshoot bucket trucks, digger derricks, and crane systems, plus hydraulic and electrical components.
• Perform inspections, preventive maintenance, and on-site diagnostics.
• Read and interpret manuals, schematics, and repair orders; use diagnostic software to identify issues.
• Complete repair orders, timecards, and inspection forms accurately.
• Communicate with customers and CTOS teams to minimize downtime.
• Travel within and occasionally beyond the assigned territory.

Skills

Hydraulic systems

Electrical systems

Mechanical systems

Diagnostics

Customer interaction

Education

High school diploma or GED

Tools

QuickServe

DTNA

Diagnostic software

Laptop

Job description

Custom Truck One Source is seeking a Field Mechanic to diagnose, repair, and maintain truck-mounted equipment across the Louisiana Gulf Coast. Most work is on customer sites with occasional shop support.

You will troubleshoot hydraulic, mechanical, and electrical systems, read schematics, use diagnostic software, and document repairs. Valid driver’s license required; CDL preferred; bring your own tools and join a safety‑driven team.