Mobile Heavy-Duty Diesel Diagnostics Technician

Job Description

Job Description

Lead the Road: Mobile Diesel Diagnostics at Transwest Mobile

Picture your day: you fire up a fully equipped service truck, review your tickets, and head straight to a customer site. A loader is down with a hydraulic fault. You diagnose in minutes, verify the fix with a road test, and get their crew back on schedule. Then it’s off to your next call—an electrical issue on a fleet tractor—before mentoring a junior tech on best practices and closing the day with clean, accurate service notes. That’s impact—every single day.

Your Work, At a Glance

• Perform advanced service and repairs on heavy-duty diesel engines, hydraulic systems, electrical systems, and farm machinery—on site and on schedule.
• Diagnose complex issues using industry-standard diagnostic tools and OEM service manuals.
• Handle both planned maintenance and emergency field repairs with minimal supervision while upholding safety and performance standards.
• Operate cranes and other specialized gear to support heavy repairs and component swaps.
• Communicate clearly with customers—explain findings, make recommendations, and keep them informed.
• Document all work thoroughly and accurately.
• Share your expertise: mentor entry-level technicians and collaborate with peers to elevate service quality.
• Stay current on new technologies and apply them to streamline and improve repair processes.

What You Bring

• High school diploma or GED.
• 5+ years hands-on with diesel powertrains, hydraulics, or electrical systems.
• Expertise with modern diagnostic tooling and service literature.
• Proven troubleshooting under pressure in fast-paced, field environments.
• Your own professional tool set suitable for the role.
• Strong prioritization and multitasking ability.
• Valid driver’s license; comfortable operating a company vehicle in a mobile capacity.
• Ability to pass background checks.
• Comfort lifting 50+ pounds and working indoors/outdoors.

Preferred

• ASE certifications or OEM training (Freightliner, Detroit, Cummins).
• Field service/mobile repair experience.
• Excellent communication and customer-facing skills.
• Experience leading projects or coordinating work on job sites.

Why You’ll Thrive Here

• Impactful Work: Take on tough jobs that keep critical equipment running.
• Growth Opportunities: Collaborate with leaders like Cummins, Eaton, and Ford, and help develop the next wave of techs.
• Supportive Culture: Innovation, teamwork, and craftsmanship are core to how we operate.
• Top Benefits:
  • Health, Vision, and Dental Insurance
  • 401(k)
  • Health Savings Account with Company Match
  • Life and Disability Insurance
  • Holidays and Paid Time Off
  • Referral Bonus Program
  • Overtime opportunities based on performance
  • On-the-job training
  • Work boot allowance, uniforms, and cleaning provided
  • Company vehicle for mobile roles

Where We Roll

Transwest Mobile provides mobile repair solutions throughout Arizona, California, Nevada, Texas, and Utah—minimizing downtime for contractors, municipalities, and large fleets. We’ve delivered trusted service for over 25 years.

About Transwest Mobile

Since 2009, Transwest Mobile has redefined fleet productivity with innovative mobile repair across AZ, CA, NV, TX, and UT. Our flawless safety record, $3M liability insurance, and 24/7 availability make us the go-to partner for field-ready repairs.

Core Proficiencies We Value

• Troubleshooting Skills
• Electrical Systems Diagnostics & Repair
• Vehicle Electronics & Computer Controls
• Diesel Engine Systems
• Brake & Suspension Systems
• Preventive Maintenance & Inspection
• Transmission & Drivetrain Systems
• ASE Automobile and Light Truck Certification Tests
• Engine Repair
• Suspension and Steering
• Brakes
• Tire Service

Ready to Step Up?

Apply today and help us keep critical fleets moving. Visit transwestmobile.com

Equal Opportunity Employer

Transwest Mobile Truck Repair is an equal opportunity employer and value diversity at our company. All qualified applicants will receive consideration for employment without regard to race, color, religion, sex (including pregnancy, sexual orientation, and gender identity), national origin, age, disability, protected veteran status, or any other characteristic protected by applicable law.

Employment may be contingent upon successful completion of a background check and/or drug screening, where permitted by law.

We are committed to providing reasonable accommodations to qualified individuals with disabilities and to individuals with sincerely held religious beliefs, in accordance with applicable law.