Fleet Diesel Diagnostics Technician

Zūm is scaling fast with backing from Sequoia Capital, SoftBank, Spark Capital, and GIC. We operate across 15+ states with hubs in San Francisco, Los Angeles, and Seattle, and we’re growing into the East Coast and Midwest. Our technology powers school district transportation, a new charter platform, and proprietary SaaS. We’re also leading nationwide school-bus electrification, helping stabilize local grids by returning energy to them. Recognition includes CNBC Disruptor 50, Financial Times 500, and Fast Company World Changing Ideas.

Day in the Life

You fire up your work tablet, review work orders, and triage the fleet: a bus with a steering complaint, a coach with an electrical fault, and a vehicle due for a full preventive service. You move from system to system with precision—steering and suspension checks, cooling and lubrication reviews, and thorough brake inspections. You trace driveline vibrations, inspect clutches and transmissions, and verify oil, temperature, and fuel regulation components. When an engine needs it, you adjust, test, and rebuild—always to spec and in compliance with all applicable Federal, State/Provincial, and local requirements.

During preventive maintenance, you test drive to validate reported driver concerns. After repairs, you road test again to confirm the problem is resolved the first time. You install, program, replace, and verify telematics devices to keep vehicles connected and data flowing. If a breakdown happens, you’re ready for a road call to get students moving again.

What You’ll Own

• End-to-end diagnostics and repair across steering, electrical, cooling, lubrication, braking, drivetrains, suspensions, clutches, transmissions, and oil/temperature/fuel regulation systems
• Engine adjustments, testing, and rebuilds within your qualifications, adhering to all relevant Federal, State/Provincial, and local regulations
• Test drives during preventive inspections and post-service verification drives to ensure issues are fully resolved
• Telematics device installation, programming, replacement, and verification
• Execution of preventive maintenance schedules and fast-turn unscheduled repairs
• Road calls and on-the-spot roadside fixes as assigned
• Accurate time, parts usage, and service documentation via work tablet and approved forms
• Upkeep of a safe, clean, productive workspace that meets DOT and company safety standards; adherence to assigned shift and overtime as needed

How You Succeed

You’re a methodical problem-solver who thrives in a dynamic shop. You balance speed with craftsmanship, document thoroughly, and aim for first-pass resolution. Organized tools, clean bays, and safety-first habits are second nature.

Qualifications

Basic

• 5+ years of fleet experience with diesel and heavy/medium-duty vehicles
• At least five years repairing autos, trucks, or buses
• Hands-on familiarity with DOT compliance for medium/heavy trucks
• Comfort with fleet management systems and digital documentation
• Personal hand tools appropriate for a Medium/Heavy-Duty Diesel Technician
• Proven strength with computerized diagnostics
• Sound judgment and decision-making under time constraints
• Experience planning and scheduling maintenance (daily/weekly/monthly)
• Willing to work flexible schedules

Preferred

• Valid CDL (or ability to obtain within 90 days)
• ASE certifications in brakes, suspension, engine, electrical, A/C; Master School Bus or Master Truck Technician a plus

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.