Mobile Diesel Mechanic/Technician (1957)

Kooner Fleet Management Solutions•Sacramento, CA

3d•Onsite

About The Position

Join Kooner Fleet Management Solutions as a Mobile Diesel Mechanic/Technician! Kooner FMS is a rapidly growing national provider of on-site fleet maintenance, preventative service, and mobile repair solutions. With nearly a decade of experience, we help fleets reduce downtime, extend vehicle life, and simplify operations. As a family-founded and field-first company, we pride ourselves on delivering trusted partnerships, exceptional service, and innovative fleet management solutions. This field-based role is ideal for skilled technicians who enjoy independence and variety. You will perform preventative maintenance, diagnostics, and repairs on Class 6-8 trucks and trailers, including emergency roadside service. You will be equipped with a fully equipped company service truck, top-tier tools, and supported by a team that values your skills and dedication.

Requirements

At least 3 years of hands-on diesel tech experience working on Class 6-8 trucks and trailers.
DOT inspection and air brake repair expertise.
Strong communication skills – ability to connect and communicate with customers and drivers.
Comfortable using mobile apps, navigation systems and digital tools to stay organized and document repairs.
Ready for the outdoors – rain or shine at customer yards.
Independent, dependable, and self-motivated.
A positive attitude and safety-first mindset.
Must be 23+ with a clean driving record and a valid driver’s license.
Bring your own hand tools.

Responsibilities

Perform onsite preventative maintenance, DOT inspections and follow up repairs on Class 6-8 trucks and trailers in a mobile field environment.
Handle emergency road service calls with confidence and urgency.
Respond to dispatch requests for scheduled and unscheduled service or maintenance.
Diagnose and repair electrical, brake, cooling, and air systems.
Use advanced diagnostic tools, including handheld computers and precision instruments, to identify and fix issues fast.
Put expertise to work using hand tools, power tools, and welding equipment.
Road test vehicles to ensure every repair meets top-quality standards.
Stay productive and efficient, meeting or beating industry-standard repair times.
Work with trusted vendors to source parts and keep operations moving.
Take ownership of a company-issued service truck, perform maintenance and pre- and post-trip inspections, and ensuring safety compliance.
Jump in wherever needed – we're a team that supports each other.