Mobile Master Diesel Mechanic (Up to 100% Travel)
RATP DevJob Title: Mobile Master Diesel Technician Department: Maintenance Diversification / Business Development Reports To: Mobile Service Manager / VP of Maintenance Diversification Position Type: Full-Time, Non-Exempt Location: Field-Based / National Travel: Extensive national travel, including overnight deployments up to 100% during active assignments Job Summary: At RATP Dev, we operate and maintain urban and regional transportation systems in virtually every corner of the globe. As a leader in public transit, we are dedicated to providing safe, reliable, and innovative mobility solutions. Our team of maintenance professionals is the backbone of our operation, ensuring that our fleet remains at peak performance to serve our communities every day. We are seeking an elite, safety-focused Mobile Master Diesel Technician to join our maintenance division. This national field role provides advanced diagnostics, complex repairs, major-component replacement, rehabilitation support, and technical leadership across transit fleet assignments.Critical components: The Mobile Master Diesel Technician provides high-level technical expertise, advanced diagnostics, major mechanical repair, and project support across RATP Dev USA transit fleets and other approved customer assignments. The technician works independently, supports startups and recoveries, mentors local staff, and helps execute defined overhaul and midlife-rehabilitation scopes. Essential Functions / Responsibilities: Advanced Diagnostics & 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. Major Component & 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. Operational Support & Startups: Deploy rapidly for new contract startups, fleet transitions, temporary staffing shortages, repair campaigns, and vehicle recovery projects. OEM Diagnostics: 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. Work Order Documentation: Maintain precise electronic records of defects, cause, correction, parts, labor, photographs, test results, and final vehicle disposition. Preferred Education and Experience: Education: High School Diploma or equivalent required. Technical school training in Medium/Heavy-Duty Diesel Technology or equivalent military training is highly preferred. Experience: Minimum of seven (7) years of progressive heavy-duty fleet maintenance experience, with substantial transit-bus, motor-coach, or comparable commercial vehicle experience. Licenses/Certifications: 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. Testing / Safety-Sensitive Assignments: Must …