Maintenance Supervisor

PENINSULA TRUCK LINES INC•Auburn, WA

21d•$7,667 - $8,167•Onsite

About The Position

The Western Washington Maintenance Supervisor oversees, plans, and coordinates maintenance activities for company-owned trucks, trailers, and shop equipment. The role helps ensure fleet assets are safe, compliant, reliable, and maintained according to company standards and DOT regulations. The supervisor leads the Western Washington maintenance team, manages vendor relationships, controls costs, oversees preventive and predictive maintenance programs, and uses technology-based fleet management systems. The role also collaborates with operations to minimize downtime and maximize asset life. The supervisor manages preventive maintenance schedules, inspections, repairs, maintenance records, warranties, recalls, and compliance documentation. Under the direction of the Corporate Maintenance Manager, this position supervises and develops maintenance technicians, organizes workflow, sets performance expectations, and provides training on new technologies, diagnostic tools, and OEM digital platforms. It oversees maintenance data and KPI reporting, inventory and parts orders, tire and oil analysis programs, and service company performance. The role coordinates maintenance with dispatch and operations, communicates equipment status and repair estimates, and helps respond to breakdowns, emergencies, and roadside assistance situations.

Requirements

At least 7 years of experience in diesel, heavy truck, or fleet maintenance.
At least 5 years of supervisory or management experience.
Strong knowledge of commercial truck repair, diagnostics, and preventive maintenance standards.
Experience with DOT/FMCSA regulations and documentation requirements.
Proficiency with maintenance management software.
Excellent communication, leadership, and organizational skills.
Technical certification or a degree in diesel technology or a related field.

Nice To Haves

CDL license.

Responsibilities

Manage preventive maintenance schedules, inspections, and repairs for Western Washington tractors, trailers, and related equipment.
Ensure vehicles comply with DOT, OSHA, and company safety regulations.
Track maintenance records, warranties, recalls, and compliance documentation.
Supervise and develop maintenance technicians, schedule workflow, and set performance expectations under the direction of the Corporate Maintenance Manager.
Train staff on new technologies, diagnostic tools, and OEM digital platforms.
Promote a safety-first, collaborative, and continuous improvement culture.
Ensure work orders, PM schedules, repair histories, inspections, and parts usage are accurately recorded in the maintenance system.
Use telematics, ELD, and diagnostic data to plan proactive and predictive maintenance.
Manage Western Washington maintenance reports and KPI dashboards, including cost per mile, downtime, and PM compliance rate.
Monitor inventory and approve parts orders while minimizing waste.
Manage Western Washington tire inventory and track casings and tread life.
Oversee service companies, verify billed hours and rates, and ensure performance meets expectations.
Maintain and monitor steer-tire standards.
Oversee seasonal tire changeovers as needed in Western Washington.
Maintain oil analysis sample kit inventory and replenish it as needed.
Follow up on recommended oil-analysis repairs and verify them with subsequent samples.
Coordinate maintenance with dispatch and operations to avoid affecting delivery timelines.
Provide timely updates on equipment status, repair ETAs, and fleet availability.
Coordinate responses to breakdowns, emergencies, and roadside assistance situations.
Manage vendor relationships and control maintenance costs.