Mobile Heavy‑Duty Diesel Systems Specialist

Torrey Holistics; Converse (TX); On-site; USD 70,000 - 100,000; Full time

Benefits offered by this job

Health insurance

Vision insurance

Dental insurance

Paid time off

Paid holidays

Job summary

Transwest Mobile seeks an experienced Mobile Heavy-Duty Diesel Systems Specialist to lead diagnostics and repairs in the field, ensuring uptime for fleets and customers. You will work on heavy‑duty diesel engines, hydraulics, and electrical systems, including CAN bus and ECM troubleshooting.

You will mentor junior technicians, document repairs meticulously, and communicate diagnostic findings clearly to customers. A strong toolset and a commitment to safety are essential.

Qualifications

• High school diploma or GED; 5–10+ years in heavy equipment repair.
• Expertise in electrical, hydraulic, and mechanical systems including CAN bus and ECM.
• Strong diagnostic and repair skills with advanced tooling and safety compliance.

Responsibilities

• Lead advanced diagnostics and repairs on heavy‑duty diesel engines and hydraulics.
• Mentor junior technicians and coach field staff.
• Deliver clear customer communications with detailed diagnostics.
• Document repairs with meticulous records and uphold safety standards.

Skills

Heavy equipment repair

Diesel powertrains

Hydraulic systems

Electrical systems

CAN bus diagnostics

ECM troubleshooting

Diagnostic tooling

Mentoring

Customer-facing communication

Education

High school diploma or GED

Tools

Diagnostic tooling

Job description

Mobile Heavy‑Duty Diesel Systems Specialist — Converse / San Antonio, TXPicture 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.What you’ll handleOwn 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.What you’ll bringHigh 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.Preferred credentialsMultiple 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.Benefits and rewardsHigh‑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.ComplianceAbility to pass background checks.About Transwest MobileSince 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.ProficienciesBrake & Suspension SystemsAutomotive RepairDiesel & Heavy Equipment SystemsElectrical Systems & Diagnostics (Heavy Equipment)Equipment Diagnostics & TroubleshootingReady to lead from the field?Apply now and join a team that prizes mastery, mentorship, and momentum.