National Mobile Diesel Master Technician

RATP Dev; United States; On-site; USD 90,000 - 120,000; Full time

Job summary

RATP Dev USA is seeking a Mobile Master Diesel Technician to lead high-level diagnostics, major-component repairs, and rehabilitation across transit fleets nationwide. This field-based role requires independent work, mentoring of local staff, and seamless support for startups, recoveries, and project scopes.

The ideal candidate has seven+ years in heavy-duty fleet maintenance, CDL with endorsements, and ASE master credentials; you will ensure safety, quality, and timely vehicle release while

Qualifications

• High School Diploma or equivalent required; technical training in Medium/Heavy-Duty Diesel Technology or equivalent military training is highly preferred.
• Minimum of seven (7) years of progressive heavy-duty fleet maintenance experience, with substantial transit-bus, motor-coach, or comparable commercial vehicle experience.
• Class A or Class B CDL with Air Brake and Passenger endorsements is required for assignments that include covered-bus road testing and should be maintained as a core qualification for this role. ASE Master Transit Bus, ASE Master Medium/Heavy Truck, or equivalent OEM master-level credentials are strongly preferred and may be required under the approved hiring standard.
• Must satisfy applicable company, site, DOT/FMCSA, and FTA drug-and-alcohol testing requirements when assigned to covered safety-sensitive duties.

Responsibilities

• AdvancedDiagnostics & Repair: Diagnose and repair complex faults involving diesel and gasoline engines, transmissions, steering, suspension, air systems, heavy-duty braking, electrical/electronic controls, multiplex systems, HVAC interfaces, and emissions/aftertreatment.
• MajorComponent & Overhaul Work: Perform or lead approved major-component replacement and rehabilitation work, including engine and transmission removal/installation, aftertreatment, cooling systems, axles/differentials, suspension, steering, brake systems, and related midlife overhaul tasks within the approved scope.
• Inspections & Verification: Conduct comprehensive PM, condition, and safety inspections; document root cause, repair steps, test results, parts, labor, and post-repair verification.
• OperationalSupport & Startups: Deploy rapidly for new contract startups, fleet transitions, temporary staffing shortages, repair campaigns, and vehicle recovery projects.
• OEMDiagnostics: Use OEM diagnostic software, laptop computers, service information, schematics, pressure/measurement equipment, and other specialized tools to diagnose and verify repairs.
• Mentoring & Quality Assurance: Serve as a technical mentor to local technicians, identify recurring failures, assist with training gaps, and review completed work for quality and procedural compliance.
• Safety & Vehicle Release: Road test and release vehicles only when authorized and after required safety checks, repair verification, and local release procedures are complete.
• WorkOrder Documentation: Maintain precise electronic records of defects, cause, correction, parts, labor, photographs, test results, and final vehicle disposition.

Skills

Diagnostics expertise

Heavy repair

Field leadership

Quality focus

Adaptability

Education

High School Diploma

Technical diesel technology training

Military training

Tools

OEM diagnostic software

Diagnostic test equipment

Job description

RATP Dev USA is seeking a Mobile Master Diesel Technician to lead high-level diagnostics, major-component repairs, and rehabilitation across transit fleets nationwide. This field-based role requires independent work, mentoring of local staff, and seamless support for startups, recoveries, and project scopes.

The ideal candidate has seven+ years in heavy-duty fleet maintenance, CDL with endorsements, and ASE master credentials; you will ensure safety, quality, and timely vehicle release while