Mobile Heavy‑Duty Diesel Systems Specialist

Job Description

Job Description

Mobile Heavy‑Duty Diesel Systems Specialist — Converse / San Antonio, TX

Picture this: sunrise over a job site in San Antonio. You roll up in a well‑equipped service truck, connect to a CAN bus, trace an electrical fault to an ECM input, and get a critical machine back online before the crew’s first break. By midday, you’re coaching a junior tech through a hydraulic diagnosis, then wrapping the afternoon with precision work on a heavy‑duty diesel overhaul. If that sounds like your kind of day, Transwest Mobile wants you leading from the field.

• Own advanced diagnostics and repairs across heavy‑duty diesel engines, hydraulics, and electrical systems (including CAN bus and ECM), plus medium and light‑duty applications.
• Perform complex engine work: overhauls, rebuilds, and intricate component repairs with speed and accuracy.
• Leverage manufacturer service information and advanced diagnostic tooling to troubleshoot tough problems.
• Operate cranes and specialized equipment to support high‑level maintenance activities.
• Mentor and train junior technicians to raise the bar across the team.
• Deliver clear, professional communication to customers, including detailed diagnostics and service recommendations.
• Document repairs and maintenance with meticulous records.
• Champion process improvements and uphold safety and performance standards.

• High school diploma or GED.
• 5–10+ years repairing heavy equipment, diesel powertrains, or hydraulic systems.
• Expert capability with electrical, hydraulic, and mechanical systems.
• Hands‑on mastery of advanced diagnostics and complex repairs (e.g., CAN bus, ECM).
• A complete professional toolset appropriate for field service.
• Strong organization and the ability to work independently under pressure.
• Valid driver’s license and readiness to operate a company vehicle in a mobile role.
• Ability to lift 50+ pounds and work in indoor/outdoor environments.

• Multiple ASE certifications—T2 through T8—or Master Diesel Technician status.
• Background in lead technician roles, supervision, or shop management.
• Proven field service/mobile repair experience and strong customer‑facing communication.

• High‑impact work that keeps critical fleets moving.
• Leadership opportunities—mentor others and help shape our processes.
• Elite, collaborative culture focused on expertise and innovation.
• Top benefits: Health, Vision, and Dental Insurance, PTO and Paid Holidays.

Ability to pass background checks.

Since 2009, Transwest Mobile has helped maximize fleet uptime with mobile repair solutions throughout Arizona, California, Nevada, Texas, and Utah. We back our work with a flawless safety record, $3M liability insurance, and 24/7 availability—trusted by contractors, municipalities, and fleet operators who can’t afford downtime.

• Brake & Suspension Systems
• Automotive Repair
• Diesel & Heavy Equipment Systems
• Electrical Systems & Diagnostics (Heavy Equipment)
• Equipment Diagnostics & Troubleshooting

Apply now and join a team that prizes mastery, mentorship, and momentum.