3 – 5 years of hands-on experience with medium to heavy-duty vehicle repair, including: Preventative Maintenance, tire & wheel service, air & hydraulic brake systems, drivetrain and suspension, electrical and A/C systems computerized diagnostics. About UniFirst The fabric of UniFirst is woven from its very unique family culture where our Team Partners enjoy a small company feel while taking advantage of the resources and stability that come with being a 2 billion-dollar organization.