Senior Field Service Diesel Mechanic – Hydraulics & Powertrain

Transwest Mobile Truck & Trailer; Houston (TX); On-site; USD 60,000 - 90,000; Full time

Benefits offered by this job

Health insurance

401(k)

Paid time off

Life and disability insurance

Company vehicle

Job summary

Transwest Mobile Truck & Trailer seeks an experienced field technician to perform advanced maintenance and repairs on heavy-duty diesel engines, hydraulics, and electrical systems. You will diagnose issues on-site, perform scheduled and unscheduled repairs, and use cranes or specialty equipment for lifts and component replacements.

You’ll provide clear communication to customers, document work, parts, and time, and mentor junior technicians while working with a dedicated mobile team across

Qualifications

• 5+ years hands-on work with diesel, hydraulic, or electrical systems.
• Strong troubleshooting skills; effective under pressure in fast-paced field environments.
• Proficiency with diagnostic software, tools, and manuals.
• Valid driver’s license and ability to drive a company vehicle.

Responsibilities

• Perform advanced field maintenance and repair for heavy-duty diesel engines, hydraulic and electrical systems.
• Execute scheduled and unscheduled repairs with minimal supervision while meeting safety standards.
• Operate cranes and specialty equipment to safely complete lifts and replacements.
• Provide clear, customer-facing communication and update statuses and recommendations.
• Mentor entry-level technicians and collaborate with teams.

Skills

Diesel engines

Hydraulic systems

Electrical systems

Troubleshooting

Diagnostic tools

Customer service

Education

High school diploma or GED

Tools

Diagnostic software

OEM service manuals

Job description

Join a high-caliber mobile repair teamTranswest Mobile is a field-first service organization supporting mission-critical equipment across Arizona, California, Nevada, Texas, and Utah. With over 25 years of trusted service, we minimize downtime for contractors, municipalities, and fleet operators through expert on-site diagnostics and repair.Role snapshotAdvanced field maintenance and repair for heavy-duty diesel engines, hydraulic systems, electrical systems, and farm machinery.Expert diagnostic work using advanced tools and OEM service manuals.Execution of scheduled and unscheduled repairs with minimal supervision while meeting safety and performance standards.Operation of cranes and specialty equipment to safely complete lifts and component replacements.Clear, customer-facing communication with recommendations and status updates.Accurate documentation of work performed, parts, and time.Mentorship of entry-level technicians and collaboration across teams.Continuous learning to incorporate industry advancements into daily practice.Minimum qualificationsHigh school diploma or GED.5+ years hands-on with diesel, hydraulic, or electrical systems.Strong troubleshooting skills; effective under pressure in fast-paced field environments.Proficiency with diagnostic software, tools, and manuals.Personal tools appropriate for the trade.Ability to prioritize and multitask.Valid driver’s license and ability to drive a company vehicle (mobile role).Ability to lift 50+ pounds; comfortable working indoors and outdoors.Preferred credentialsASE or OEM-specific training (e.g., CAT, Hyster, Cummins).Field service/mobile repair experience.Strong communication and customer service track record.Customer-facing experience or jobsite project leadership.Benefits and supportHealth, Vision, and Dental Insurance401(k)Life and Disability InsurancePaid Time Off and HolidaysReferral Bonus ProgramOvertime opportunities based on performanceOn-the-job trainingWork boot allowance, uniforms, and cleaning providedCompany vehicle for mobile rolesOur edgeSince 2009, we’ve delivered 24/7 mobile service with a flawless safety record and $3M liability insurance—redefining fleet productivity through dependable, field-ready repairs. You’ll work on platforms from Cummins to Eaton to Ford while mentoring others and growing your impact.ComplianceAbility to pass background checks.Apply todayBe part of a collaborative, innovative team that keeps critical equipment online. Apply now and let’s keep fleets moving together. Visit transwestmobile.comYou should be proficient in:Diesel Engine SystemsBrake & Suspension SystemsPreventive Maintenance & InspectionEngine Repair