Fleet Diesel Technician: Diagnostics & Maintenance

Lever, Inc.; St. Louis (MO); On-site; USD 44,000 - 48,000; Full time

Job summary

Zūm Services, Inc. is seeking a skilled Diesel Technician to support maintenance operations for our fleet. You will diagnose complex mechanical and electrical issues, perform preventive maintenance, and ensure DOT and safety standards are met.

Strong diagnostic ability and experience with fleet management systems are essential. You will work in a fast-paced facility, maintain organized work areas, and document repairs and time spent accurately.

Qualifications

• 5 years of fleet experience in Diesel, Heavy/Med duty fleets.
• Minimum of five years Auto/Truck or Bus mechanical repair experience.
• Experience with compliance with the local applicable DOT compliance of Med/Heavy Trucks.
• Computer proficiency for fleet management systems and documentation.
• Possess the recommended minimum hand tools for a Medium and Heavy Duty and Diesel Technician.
• Strong experience with computerized diagnostics.
• Ability to use good judgment and decision‑making skills.
• Background in planning and scheduling maintenance (Daily, Weekly, Monthly).
• Willingness to work flexible schedules.

Responsibilities

• Diagnose malfunctions and perform vehicle repairs including steering, electrical, cooling, lubricating, braking systems, drivetrains, suspensions, steering systems, clutches, transmissions, and oil, temperature, gas regulating components.
• Adjust, test, and rebuild engines and related assigned duties within qualification level, in accordance with all relevant Federal, State/Provincial and local guidelines and requirements.
• Perform test drives during Preventative Maintenance inspections to identify driver reported issues and conduct test drives after service to confirm repairs have been completed successfully.
• Install, program, replace and verify telematic devices.
• Record time spent, parts used and repairs and/or maintenance conducted on the work tablet and/or authorized form.

Skills

Diesel experience

Auto/Truck repair

DOT compliance

Fleet management

Diagnostics

Problem solving

Organization

Flexible schedule

Tools

Fleet management software

Diagnostics tools

Job description

Zūm Services, Inc. is seeking a skilled Diesel Technician to support maintenance operations for our fleet. You will diagnose complex mechanical and electrical issues, perform preventive maintenance, and ensure DOT and safety standards are met.

Strong diagnostic ability and experience with fleet management systems are essential. You will work in a fast-paced facility, maintain organized work areas, and document repairs and time spent accurately.