Heavy Vehicle Diagnostics & Repair Specialist
Zum
Seattle, WA, USA
Posted on May 5, 2026
Join Zūm’s mission to reinvent school transportation through technology, electrification, and service excellence. We manage and operate district fleets in 15+ states, anchor hubs in San Francisco, Los Angeles, and Seattle, and are scaling across the East Coast and Midwest. Our team builds and runs modern platforms—from a charter marketplace to proprietary SaaS—while advancing a nationwide effort to electrify fleets and support the energy grid. We’re backed by Sequoia Capital, SoftBank, Spark Capital, and GIC, and honored by CNBC 50 disruptor, Financial Times 500 fastest growing companies, and Fast Company World Changing Ideas.
Core responsibilities
Zūm Services, Inc. and all its subsidiaries provide equal employment opportunities to all employees and applicants for employment and prohibits discrimination and harassment of any type without regard to race, color, religion, age, sex, national origin, disability status, genetics, protected veteran status, sexual orientation, gender identity or expression, or any other characteristic protected by federal, state or local laws.
Core responsibilities
- Troubleshoot and repair medium/heavy-duty vehicles across steering, electrical, cooling, lubrication, braking, driveline, suspension, hydraulic/power steering, clutch, transmission, fuel, emissions, and engine systems—including testing, adjustment, and rebuilds.
- Conduct post-repair test drives to validate fix quality and performance.
- Secure required inspections and approvals for major repairs prior to vehicle release.
- Maintain an orderly, compliant, and safe workspace aligned with all relevant federal, state, and local requirements.
- Identify and escalate additional repair or maintenance needs, including items requiring higher-level technician qualifications.
- Accurately record labor hours, parts consumption, and detailed service notes.
- Handle road calls and perform on-site repairs as needed.
- Inform the Lead Technician of unsafe conditions, practices, or suspected vehicle abuse.
- 4–5 years’ experience as a fleet mechanic for medium/heavy trucks.
- Advanced diagnostics with proven electrical and A/C competencies.
- Comprehensive knowledge of major vehicle systems and diesel equipment.
- Fleet background with both diesel and gasoline units.
- Ownership of recommended minimum Diesel Technician hand tools.
- Strong judgment and decision-making under time and safety constraints.
- Valid state driver’s license; CDL preferred.
- ASE certification desirable but not required.
- Mechanical troubleshooting
- Maintenance and repair
- Diesel & heavy equipment systems
- DOT & equipment inspection compliance
Zūm Services, Inc. and all its subsidiaries provide equal employment opportunities to all employees and applicants for employment and prohibits discrimination and harassment of any type without regard to race, color, religion, age, sex, national origin, disability status, genetics, protected veteran status, sexual orientation, gender identity or expression, or any other characteristic protected by federal, state or local laws.