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Are you an experienced Diesel Technician looking for your next opportunity? We’re seeking a Master Diesel Technician III to join our client and deliver high-quality service for our fleet of semi-tractor vehicles. In this key role, you’ll run diagnostic tests, perform preventative maintenance, execute repairs, and work alongside company drivers and fellow technicians to ensure efficient and successful repair processes.

**Location:** Romeoville, IL

**Pay Range:** $35 - $50/hour

**Hours:** First Shift, 6:30 a.m. – 3 p.m.

Key Responsibilities

+ Diagnose issues in semi-trucks and tractor-trailers

+ Execute preventative maintenance, including HVAC and tractor servicing

+ Replace coils, filters, and other parts, and test fire alarms/extinguishers

+ Test equipment and systems for optimal performance

+ Document all repairs and maintenance

+ Repair and maintain brakes, electrical, suspension systems, and structural components

+ Conduct engine repairs and maintenance (Cummins, PACCAR, International, Detroit)

+ Diagnose and repair aftertreatment systems and engine-related issues

+ Conduct engine rebuilds and overhauls

+ Read and interpret wiring schematics

+ Ensure work quality meets all safety and regulatory standards

+ Conduct DOT annual vehicle inspections

Skills & Requirements

+ Minimum 1 year experience in semi-tractor maintenance and repair or equivalent education/experience

+ Minimum 1 year experience in tractor maintenance and repair or equivalent

+ Proven diesel mechanic experience (semi-diesel mechanic required)

+ Must be at least 18 years of age

+ Valid driver’s license

+ Must own your own tools

+ Strong diagnostic, troubleshooting, and problem-solving skills

+ Computer literate

+ Ability and willingness to learn complex mechanical and electrical systems

+ ASE Certification preferred

Ready to take your diesel technician skills to the next level? Apply today and become an essential part of our high-performing team!

As part of our promise to talent, Kelly supports those who work with us through a variety of benefits, perks, and work-related resources. Kelly offers eligible employees voluntary benefit plans including medical, dental, vision, telemedicine, term life, whole life, accident insurance, critical illness, a legal plan, and short-term disability. As a Kelly employee, you will have access to a retirement savings plan, service bonus and holiday pay plans (earn up to eight paid holidays per benefit year), and a transit spending account. In addition, employees are entitled to earn paid sick leave under the applicable state or local plan. Click here (https://www.mykelly.com/help-support-working-with-kelly-us/#Benefits) for more information on benefits and perks that may be available to you as a member of the Kelly Talent Community.

Put your skills to work.

There are a lot of different light industrial jobs out there. Kelly ® Professional & Industrial recruiters are focused on only offering opportunities with companies that provide competitive pay, safe work environments, and cultures that recognize your value. Whether you’re looking for flexible shifts, performance bonuses, or a progressive work culture—we’re dedicated to finding the very best opportunities for you.

About Kelly

Work changes everything. And at Kelly, we’re obsessed with where it can take you. To us, it’s about more than simply accepting your next job opportunity. It’s the fuel that powers every next step of your life. It’s the ripple effect that changes and improves everything for your family, your community, and the world. Which is why, here at Kelly, we are dedicated to providing you with limitless opportunities to enrich your life—just ask the 300,000 people we employ each year.

Kelly is committed to providing equal employment opportunities to all qualified employees and applicants regardless of race, color, sex, sexual orientation, gender identity, religion, national origin, disability, veteran status, age, marital status, pregnancy, genetic information, or any other legally protected status, and we take affirmative action to recruit, employ, and advance qualified individuals with disabilities and protected veterans in the workforce. Requests for accommodation related to our application process can be directed to the Kelly Human Resource Knowledge Center. Kelly complies with the requirements of California’s state and local Fair Chance laws. A conviction does not automatically bar individuals from employment. Kelly participates in E-Verify and will provide the federal government with your Form I-9 information to confirm that you are authorized to work in the U.S.

Kelly Services is proud to be an Equal Employment Opportunity and Affirmative Action employer. We welcome, value, and embrace diversity at all levels and are committed to building a team that is inclusive of a variety of backgrounds, communities, perspectives, and abilities. At Kelly, we believe that the more inclusive we are, the better services we can provide. Requests for accommodation related to our application process can be directed to Kelly’s Human Resource Knowledge Center. Kelly complies with the requirements of California’s state and local Fair Chance laws. A conviction does not automatically bar individuals from employment.