Heavy-Duty Fleet Mechanic — Diesel & Hybrid Tech

King County; Seattle (WA); On-site; USD 70,000 - 100,000; Full time

Benefits offered by this job

Tool allowance

ASE certification pay

Boot allowance

Medical/dental/vision

Free transportation options

Employee assistance program

Paid vacation and sick leave

12 holidays + 2 personal days

Retirement benefits

Job summary

King County seeks a Heavy-Duty Equipment Mechanic to diagnose and repair gas, diesel, and hybrid equipment across fleet assets. You will troubleshoot electrical and hydraulic systems, perform welding and fabrication, and maintain thorough service records.

Field support and shop-based work require safe operation and adherence to county procedures. The role demands independent work and teamwork, with opportunities to guide apprentices and coordinate with multiple divisions.

Qualifications

• Demonstrated journey-level proficiency with industrial/heavy-duty equipment and hydraulics.
• Experience with gas, diesel, and hybrid engines; electrical and transmission systems.
• Knowledge of shop safety rules and repair terminology.

Responsibilities

• Diagnose and repair gas, diesel, and hybrid powered equipment including trucks, backhoes, and loaders.

Skills

Heavy-duty equipment

Troubleshooting

Diagnostics

Safety rules

Independent working

Team mentorship

Microsoft Office

Tools

Electrical test equipment

Electronic diagnostic tooling

Welding & fabrication tools

Job description

King County seeks a Heavy-Duty Equipment Mechanic to diagnose and repair gas, diesel, and hybrid equipment across fleet assets. You will troubleshoot electrical and hydraulic systems, perform welding and fabrication, and maintain thorough service records.

Field support and shop-based work require safe operation and adherence to county procedures. The role demands independent work and teamwork, with opportunities to guide apprentices and coordinate with multiple divisions.