Diesel Mechanic / Technician

Job Title: Diesel Technician / Mechanic

Location: Marshfield, Wisconsin

Company: I-State Truck Centers

I-State Truck Center is looking for Diesel Mechanic/Technician(s) of all skill levels for our brand-new, state-of-the-art facility in Marshfield, Wisconsin. This role is ideal for technicians with strong experience working on Freightliner, Allison, Detroit Diesel (including Series60), Cummins, and other heavy-duty engine platforms. We support Freightliner, Western Star, and other on-highway truck applications and provide ongoing training, certifications, and career growth opportunities.

What You’ll Do

• Diagnose, repair, and maintain heavy-duty diesel truck engines and components
• Perform advanced diagnostics and repairs on Detroit Diesel (Series 60 through current models) and Cummins platforms
• Troubleshoot and repair engine, aftertreatment, electrical, and driveline systems
• Communicate clearly with foremen, service writers, and fellow technicians regarding repairs
• Complete quality repairs to ensure up-time and customer satisfaction
• Maintain accurate repair documentation and paperwork
• Work toward and maintain required certifications
  
  

What We’re Looking For

• Experience as a heavy-duty diesel truck technician
• Strong working knowledge of Detroit Diesel engines (including Series 60)
• Experience with Cummins engines; CAT and International experience a plus
• Familiarity with diagnostics, electrical systems, and diesel engine repair
• Additional experience with brakes, suspension, hydraulics, manual/automatic transmissions, and drivetrains preferred
• Valid driver’s license required (CDL holders eligible for bonus compensation)
• Strong work ethic, reliability, and a customer-focused mindset
• Ability to meet physical demands of the role
  
  

Desired Skills & Qualities

• Positive attitude and strong problem-solving skills
• Willingness to pursue ongoing training and manufacturer certifications
• Solid written and verbal communication skills
• Commitment to accuracy, safety, and efficient repairs
  
  

Benefits

• Brand-New, State-of-the-art Technician Locker Rooms
• Competitive hourly pay based on experience
• Company-provided uniforms (including cleaning)
• Tool program available
• Tuition assistance and continued training opportunities
• Health, dental, and vision insurance (effective first of the following month)
• PTO accrual starting day one
• 6 paid holidays 2 floating holidays
• 401(k) with company match
• Company-paid life, short- and long-term disability insurance
• Virtual healthcare through Healthiest You
• PPE reimbursement (boots and safety glasses)
• Pet insurance and employee discounts
• Employee Assistance Program (24/7 confidential support)
• Paid health and wellness screenings for employees and spouses
  
  

Please note this job description is not designed to cover or contain a comprehensive listing of activities, duties or responsibilities that are required of the employee for this job. Duties, responsibilities, and activities may change at any time with or without notice.

Interstate Companies is an Equal Opportunity Employer, and we encourage all qualified and interested persons to apply for this position by submitting a resume for consideration.

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