Diesel Mechanic

DeAngelo Contracting Services, LLC; Guthrie (OK); On-site; USD 44,000 - 48,000; Full time

Benefits offered by this job

Medical, dental, vision

401(k) with company match

Generous paid time off

Employee referral bonus

Hotel accommodations and per‑diem

Job summary

We are seeking a highly skilled Shop/Traveling Diesel Mechanic for DCS, based in Oklahoma City, who will diagnose and repair medium and heavy‑duty diesel trucks and related equipment. The role involves extensive travel across OK, TX, LA, KS and CO, with a service truck provided.

Candidates must have 3+ years in diesel repair, strong diagnostic skills, and the ability to work independently in the field. ASE credentials are a plus; DOT physical and a valid license are required.

Qualifications

• 3+ years of experience as a diesel mechanic, preferably with heavy‑duty truck repair.
• Diagnostic and troubleshooting across diesel, hydraulic, electrical, and emissions systems.
• Able to work independently in remote environments with minimal supervision.
• Fabrication and welding experience required.
• Valid driver’s license and ability to pass a DOT physical.
• Willingness to travel frequently across multiple states; hotel accommodations and per‑diem provided.
• ASE certifications are preferred but not required.

Responsibilities

• Travel between job sites to inspect, diagnose, and repair medium and heavy‑duty diesel trucks, skid steers, and related equipment.
• Perform advanced troubleshooting and repair of: Diesel engines, Electrical systems, Hydraulic systems, Emissions systems, Transmissions, A/C systems, Hi‑Rail gear systems, Spray systems.
• Utilize scan tools, diagnostic software, multimeters, pressure gauges, and other testing equipment to identify failures.
• Perform routine maintenance, emergency repairs, and preventative services.
• Demonstrate strong knowledge of diesel emissions systems and electrical diagnostics.
• Complete repairs accurately on the first attempt through root‑cause analysis.
• Perform fabrication, welding, and cutting as required.
• Maintain service truck organization, tool inventory, and parts accountability.
• Maintain accurate service documentation and communicate repair updates with management.
• Ensure compliance with company safety standards and DOT regulations.

Skills

Diagnostics

Troubleshooting

Diesel engines

Electrical systems

Emissions systems

Fabrication/welding

DOT compliance

Education

ASE certification preferred

Tools

Scan tools

Diagnostic software

Multimeters

Pressure gauges

Job description

DCS is a family owned and operated business with treating all employees like family at the core of our values. Our employees provide innovative, safe, and high-quality infrastructure/maintenance contracting services to State DOTs, railroads, and other commercial/residential customers across the entire United States. Employees receive generous compensation packages, employee engagement events & career development programs, just to name a few of the perks of being part of the DCS family!

To provide quality service, we need top-of-the-line employees. That is why we offer great compensation, awesome benefits, and a work environment worth bragging about!

Job Description

We are seeking a highly skilled Shop/Traveling Diesel Mechanic with extensive troubleshooting experience in medium and heavy-duty truck systems. This role is ideal for a self-sufficient, diagnostic-focused technician who can accurately identify issues and complete repairs efficiently — the first time.

This position requires travel throughout Oklahoma, Texas, Louisiana, Kansas and Colorado. Candidates must be comfortable working independently in the field with minimal supervision.

This is a shop/travel mechanic position. With shop being located in Oklahoma City, OK.

Service truck provided.

Key Responsibilities

• Travel between job sites to inspect, diagnose, and repair medium and heavy-duty diesel trucks, skid steers, and related equipment.


• Perform advanced troubleshooting and repair of:
  
  
  
  • Diesel engines
  
  
  • Electrical systems
  
  
  • Hydraulic systems
  
  
  • Emissions systems (aftertreatment/DEF systems)
  
  
  • Transmissions
  
  
  • A/C systems
  
  
  • Hi-Rail gear systems
  
  
  • Spray systems
  
  
  
  


• Utilize scan tools, diagnostic software, multimeters, pressure gauges, and other testing equipment to accurately identify mechanical and electrical failures.


• Perform routine maintenance, emergency repairs, and preventative services.


• Demonstrate strong working knowledge of diesel emissions systems and electrical diagnostics.


• Complete repairs efficiently and correctly on the first attempt through accurate root-cause analysis.


• Perform fabrication, welding, and cutting as required.


• Maintain service truck organization, tool inventory, and parts accountability.


• Maintain accurate service documentation and communicate repair updates with management.


• Ensure full compliance with company safety standards and DOT regulations.


• Work extended hours as needed and operate effectively in all weather conditions.

Qualifications

• Minimum 3+ years of experience as a diesel mechanic, preferably with heavy-duty truck repair.


• Diagnostic and troubleshooting skills across diesel, hydraulic, electrical, and emissions systems (REQUIRED).


• Strong understanding of aftertreatment systems and diesel emissions components.


• Proven ability to work independently in remote environments with minimal supervision.


• Fabrication and welding experience required.


• ASE certifications are preferred but not required.


• Valid driver’s license required; must be able to pass a DOT physical.


• Willingness to travel frequently across multiple states. (Hotel accommodations and per-diem provided by DCS)


• Must provide verifiable employment history and hands-on experience

Additional Information

Benefits & Compensation

• Compensation range:$32-35/hourly depending on experience.


• Challenging and rewarding work environment


• Competitive medical, dental, vision, and prescription drug coverage


• 401(k) with company match


• Generous paid time off


• Employee referral bonus

Come be a part of the DeAngelo family, today!

DCS is an equal opportunity employer and complies with all hiring and employment regulations. In the event an ADA accommodation is needed, DCS is happy to help all employees achieve gainful employment in an atmosphere where they are appreciated and respected. DCS offers subcontracting services to government agencies as such, candidates may be subject to pre-employment screenings such as criminal background checks, pre-employment, post-accident & reasonable impairment drug screenings, motor vehicle record checks, etc. as such, DCS complies with all federal and state regulatory guidelines including the FCRA.

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