Entry Level Diesel Mechanic

Jobtailor; Madison (WI); On-site; USD 55,000 - 85,000; Full time

Job summary

Jobtailor in Madison, WI is seeking an experienced Diesel Technician to perform routine inspections, oil changes, and preventive maintenance on diesel engines and heavy-duty systems. You will collaborate with senior technicians and use diagnostic tools such as OBD scanners and multimeters to troubleshoot and repair components.

This role requires a high school diploma, a relevant technical certification, and 12 years of experience working on heavy-duty diesel trucks.

Qualifications

• High school diploma or equivalent required.
• Technical diploma or certification in automotive, diesel mechanics, or heavy-duty truck repair preferred.
• 12 years of experience working on light-duty or heavy-duty diesel trucks.
• Basic understanding of diesel engine systems, air brakes, and hydraulics.
• Familiarity with OEM diagnostic platforms (Cummins Insite, Detroit Diesel DiagnosticLink, etc.).
• Ability to read service manuals, wiring diagrams, and schematics.
• Strong attention to detail and safety-first mindset.
• Dependable attendance and team-oriented attitude.
• Ability to lift 50–75 lbs.
• Ability to work in confined spaces and varying shop conditions.

Responsibilities

• Perform routine inspections, oil changes, and preventive maintenance on diesel engines, transmissions, brakes, and electrical systems
• Assist senior technicians with diagnostics using tools such as OBD scanners, multimeters, and air gauges
• Disassemble, repair, and reassemble components including fuel systems, aftertreatment systems, and suspension components under supervision
• Accurately document all work performed using digital service management software
• Maintain a clean, organized, and safe work area in compliance with company policies and OSHA standards
• Coordinate with the parts department to identify needed components
• Participate in on-the-job training and manufacturer certification programs

Skills

Attention to detail

Problem solving

Safety-first mindset

Team oriented

Dependable attendance

Education

High school diploma

Technical diploma/certification

Tools

OBD scanners

Multimeters

Air gauges

Job description

Responsibilities

• Perform routine inspections, oil changes, and preventive maintenance on diesel engines, transmissions, brakes, and electrical systems
• Assist senior technicians with diagnostics using tools such as OBD scanners, multimeters, and air gauges
• Disassemble, repair, and reassemble components including fuel systems, aftertreatment systems, and suspension components under supervision
• Accurately document all work performed using digital service management software
• Maintain a clean, organized, and safe work area in compliance with company policies and OSHA standards
• Coordinate with the parts department to identify needed components
• Participate in on-the-job training and manufacturer certification programs

Requirements

• High school diploma or equivalent required
• Technical diploma or certification in automotive, diesel mechanics, or heavy-duty truck repair preferred
• 12 years of experience working on light-duty automotive or heavy-duty diesel trucks (Freightliner, Kenworth, Peterbilt, Volvo, Mack, etc.)
• Basic understanding of diesel engine systems, air brakes, and hydraulics
• Familiarity with OEM diagnostic platforms (Cummins Insite, Detroit Diesel DiagnosticLink, etc.)
• Ability to read service manuals, wiring diagrams, and schematics
• Strong attention to detail, problem-solving skills, and safety-first mindset
• Dependable attendance and team-oriented attitude
• Ability to lift 50-75 lbs
• Ability to work in confined spaces and varying shop conditions