Diesel Mechanic

DCS is a family owned and operated business providing infrastructure/maintenance contracting services to State DOTs, railroads, and other commercial/residential customers across the United States. 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. This is a shop/travel mechanic position with the shop located in Oklahoma City, OK.

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, and spray systems; Utilize scan tools, diagnostic software, multimeters, pressure gauges, and other testing equipment to 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

Requirements

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; Valid driver's license required; must be able to pass a DOT physical; Willingness to travel frequently across multiple states; Must provide verifiable employment history and hands-on experience

Nice to have

ASE certifications

Benefits

Challenging and rewarding work environment; Competitive medical, dental, vision, and prescription drug coverage; 401(k) with company match; Generous paid time off; Career development opportunities; Employee referral bonus; Hotel accommodations and per-diem provided by DCS; Service truck provided; Employee engagement events