Mobile Heavy-Duty Powertrain Diagnostic Specialist DTR Services - 3.3 San Antonio, TX Job Details $25 - $43 an hour 1 day ago Qualifications Customer communication Full Job Description Ready to Own the Fix? You're in San Antonio, TX. A customer calls—downtime is costing them money. You arrive on-site, isolate the problem fast, make the repair, and get them rolling again. If that challenge motivates you, this role is for you. What You'll Do Diagnose diesel engine and equipment issues with precision using advanced testing and troubleshooting methods. Execute preventive maintenance and corrective repairs on diesel-powered vehicles. Service critical systems, including fuel systems, transmissions, and electrical components. Keep thorough service records—issues found, parts used, and work performed. Communicate clearly with customers about repair plans, timelines, and maintenance best practices. Stay informed on emerging diesel technologies and tools. Follow all site safety protocols and regulatory standards. Do You Match This Profile? High school diploma or equivalent; diesel tech certification preferred. Documented experience as a diesel mechanic/technician. Strong command of diesel engine theory, components, and systems. Comfort diagnosing and repairing mechanical and electrical faults. Sharp problem-solving skills and an eye for detail. Valid driver's license with a clean driving record. Excellent communicator with a strong customer service approach. Willing to work flexible hours and travel between job sites. Where You'll Work Across San Antonio, TX and nearby areas—at customer locations, in the field, and wherever the job takes you.