Maintenance Supervisor

Peninsula-Truck-Lines,-Inc.-1; Auburn (WA); On-site; USD 85,000 - 110,000; Full time

Job summary

Peninsula Truck Lines, Inc. is seeking a Western Washington Maintenance Supervisor to oversee fleet maintenance for company trucks and trailers.

You will lead a regional maintenance team, manage vendor relationships, and ensure compliance with DOT regulations while driving cost efficiency and asset reliability. You will coordinate PM schedules, track maintenance records, and leverage telematics for predictive maintenance, partnering with operations to minimize downtime and maximize asset

Qualifications

• 7+ years of experience in diesel, heavy truck, or fleet maintenance.
• 5+ years of supervisory or management experience.
• Experience with DOT/FMCSA regulations and documentation requirements.

Responsibilities

• Oversee Western Washington PM schedules, inspections, and repairs for tractors, trailers, and related equipment.
• Lead maintenance technicians, schedule workflow, and set performance expectations.
• Provide training on new technologies, diagnostic tools, and OEM digital platforms.
• Foster a safety-first, collaborative, and continuous improvement culture.
• Utilize telematics and diagnostic data for proactive maintenance scheduling.
• Manage work orders, PM schedules, repair histories, and compliance records.

Skills

Diesel truck maintenance

Leadership

Supervisory experience

DOT/FMCSA regulations

Maintenance management software

Diagnostics & repair

Communication

Organizational skills

CDL license

Education

Technical certification or degree in diesel technology

Tools

Maintenance management software

Telematics systems

Job description

JOB SUMMARY:The Western Washington Maintenance Supervisor (WWMS) is responsible for overseeing, planning, and coordinating all maintenance activities related to company-owned trucks, trailers, and shop equipment. This role assists in ensuring that all fleet assets are safe, compliant, reliable, and maintained in accordance with company standards and DOT regulations. The WWMS will lead the Western Washington maintenance team, manage vendor relationships, control costs, have oversight of preventive and predictive maintenance programs, effective use of technology-based fleet management systems, and collaborate with operations to minimize downtime and maximize asset lifecycle.KEY RESPONSIBILITIES:Fleet Maintenance & ComplianceManage Western Washington preventive maintenance (PM) schedules, inspections, and repairs for all tractors, trailers, and related equipment.Ensure all vehicles comply with DOT, OSHA, and company safety regulations.Track maintenance records, warranties, recalls, and compliance documentation.Leadership & Team ManagementSupervise and develop maintenance technicians, scheduling workflow and setting performance expectations under the direction of the Corporate Maintenance Manager.Provide training related to new technologies, diagnostic tools, and OEM digital platforms.Foster a safety-first, collaborative, and continuous improvement culture.Technology & Data ManagementEnsure all work orders, PM schedules, repair histories, inspections, and parts usage are accurately recorded in the system.Leverage telematics, ELD, and diagnostic data for proactive and predictive maintenance scheduling.Responsible for managing Western Washington’s data-driven maintenance reports and KPI dashboards (e.g., cost per mile, downtime, PM compliance rate).Budgeting & Cost ControlMonitor inventory levels and approve parts orders while minimizing waste.Tire Program ManagementManage Western Washington tire inventory levels and ensure accurate tracking of casings and tread life.Oversee service companies, verify billed hours and rates, and ensure performance aligns with expectations.Maintain and monitor steer-tire standards.Oversee the seasonal tire changeover program as needed in Western Washington.Oil Analysis Program ManagementMaintain oil analysis sample kit inventory and replenish as required.Follow up to ensure completion of recommended repairs and subsequent verification samples.Operational SupportCollaborate with dispatch and operations to schedule maintenance without affecting delivery timelines.Provide timely updates on equipment status, repair ETAs, and fleet availability.Coordinate responding to breakdowns, emergencies, and roadside assistance situations.QUALIFICATIONS:7+ years of experience in diesel, heavy truck, or fleet maintenance.5+ years of supervisory or management experience.Strong knowledge of commercial truck repair, diagnostics, and PM standards.Experience with DOT/FMCSA regulations and documentation requirements.Proficiency with maintenance management software.Excellent communication, leadership, and organizational skills.Technical certification or degree in diesel technology or related field.CDL license a plus.