Senior Mechanic Tech I

Caterpillar Inc.; Green Valley (AZ); On-site; USD 30,000 - 51,000; Full time

Benefits offered by this job

Medical benefits

Dental benefits

Vision benefits

401(k) plans

HSA

FSAs

Career development

Incentive bonus

Disability benefits

Life Insurance

Parental leave

Tuition Reimbursement

Part-time eligibility

Job summary

Caterpillar Inc. in Tucson Proving Ground – Green Valley, AZ, is seeking a Senior Mechanic Tech I to perform advanced diagnostics, repairs, and testing on mining and construction equipment.

You will diagnose engine, hydraulic, powertrain, electrical, electronic, and structural systems, mentor junior technicians, and support field investigations with minimal supervision. The role emphasizes safety, quality, and continuous improvement while enabling product development and field validation across

Qualifications

• Advanced mechanical diagnostics across engine, hydraulics, powertrain and electrical systems.
• Strong knowledge of construction and mining equipment systems.

Responsibilities

• Perform complex assembly, disassembly, repair, modification, and overhaul of Caterpillar mining and construction equipment.
• Diagnose and troubleshoot mechanical, hydraulic, powertrain, electrical, electronic, and structural system issues.
• Conduct root cause analysis and determine appropriate corrective actions for equipment failures.
• Read and interpret engineering drawings, schematics, service manuals, technical documentation, and work orders.
• Evaluate equipment safety, serviceability, reliability, and reparability.
• Operate construction, mining, and support equipment safely and effectively.
• Support machine builds, engineering updates, product improvements, and technical modifications.
• Prepare, maintain, and repair machines to ensure readiness for testing and field evaluations.
• Support field investigations and machine inspections as required.
• Support machine validation, durability testing, and engineering evaluation activities.
• Assist with machine instrumentation, data collection systems, and test support activities.
• Identify machine performance concerns and communicate findings to engineering teams.
• Verify repairs and modifications through functional testing and machine evaluations.
• Work independently with minimal supervision while maintaining high standards of quality and safety.
• Mentor and train mechanics, technicians, operators, and visitors on repair procedures, diagnostics, and safe work practices.
• Communicate technical information through verbal discussions and written reports.
• Support cross-functional teams in identifying and implementing product improvements.
• Promote and maintain Caterpillar's safety culture at all times.
• Follow established safety procedures, standards, and operating practices.
• Participate in initiatives that improve safety, quality, efficiency, reliability, and customer satisfaction.
• Effectively perform as both a team member and team leader depending on project needs.

Skills

Advanced diagnostics

Technical expertise

Root cause analysis

Equipment operation

Mentoring

Communication

Job description

Job Description

Your Work Shapes the World at Caterpillar Inc.

When you join Caterpillar, you're joining a global team who cares not just about the work we do – but also about each other. We are the makers, problem solvers, and future world builders who are creating stronger, more sustainable communities. We don't just talk about progress and innovation here – we make it happen, with our customers, where we work and live. Together, we are building a better world, so we can all enjoy living in it.

Career Area

Operations

Job Description

Your Work Shapes the World at Caterpillar Inc.

When you join Caterpillar, you're joining a global team who cares not just about the work we do – but also about each other. We are the makers, problem solvers, and future world builders who are creating stronger, more sustainable communities. We don't just talk about progress and innovation here – we make it happen, with our customers, where we work and live. Together, we are building a better world, so we can all enjoy living in it.

We are seeking a highly skilled Senior Mechanic Tech I to perform complex diagnostics, repairs, modifications, assembly, and evaluation of Caterpillar mining and construction equipment in support of Buckets & Blades, Off Highway Trucks (OHT) and Large Mining Truck (LMT) programs. This position requires advanced mechanical expertise, strong troubleshooting capabilities, and the ability to work independently with minimal supervision. The successful candidate will diagnose and repair complex machine systems including engines, powertrain, hydraulic, electrical, electronic, and structural systems while supporting product development, machine validation, field investigations, and continuous improvement initiatives. This role requires strong technical judgment, effective communication skills, and the ability to provide guidance and training to less experienced technicians.

What You Will Do

Advanced Diagnostics & Repair

• Perform complex assembly, disassembly, repair, modification, and overhaul of Caterpillar mining and construction equipment.
• Diagnose and troubleshoot mechanical, hydraulic, powertrain, electrical, electronic, and structural system issues.
• Conduct root cause analysis and determine appropriate corrective actions for equipment failures.
• Read and interpret engineering drawings, schematics, service manuals, technical documentation, and work orders.
• Evaluate equipment safety, serviceability, reliability, and reparability.

Equipment Support & Machine Operations

• Operate construction, mining, and support equipment safely and effectively.
• Support machine builds, engineering updates, product improvements, and technical modifications.
• Prepare, maintain, and repair machines to ensure readiness for testing and field evaluations.
• Support field investigations and machine inspections as required.

Testing & Product Validation

• Support machine validation, durability testing, and engineering evaluation activities.
• Assist with machine instrumentation, data collection systems, and test support activities.
• Identify machine performance concerns and communicate findings to engineering teams.
• Verify repairs and modifications through functional testing and machine evaluations.

Leadership & Technical Support

• Work independently with minimal supervision while maintaining high standards of quality and safety.
• Mentor and train mechanics, technicians, operators, and visitors on repair procedures, diagnostics, and safe work practices.
• Communicate technical information through verbal discussions and written reports.
• Support cross-functional teams in identifying and implementing product improvements.

Safety & Continuous Improvement

• Promote and maintain Caterpillar's safety culture at all times.
• Follow established safety procedures, standards, and operating practices.
• Participate in initiatives that improve safety, quality, efficiency, reliability, and customer satisfaction.
• Effectively perform as both a team member and team leader depending on project needs.

What Skills You Will Have

Advanced Mechanical Diagnostics Demonstrated ability to diagnose and repair complex engine, hydraulics, powertrain, electrical, electronic, and structural systems on heavy equipment.

Technical Expertise Strong understanding of construction and mining equipment systems, service procedures, schematics, engineering drawings, and service literature.

Problem Solving & Root Cause Analysis Ability to investigate equipment failures, analyze technical issues, and implement effective corrective actions.

Equipment Operation Experience safely operating construction, mining, and support equipment.

Leadership & Mentoring Ability to provide technical guidance and training to other mechanics and technicians.

Communication Strong verbal and written communication skills with the ability to effectively communicate technical information to engineers, customers, visitors, and team members.

Top Candidates Will Have

• Extensive experience repairing and diagnosing Caterpillar mining and construction equipment.
• Advanced troubleshooting experience with engines, hydraulics, powertrain, electrical, and electronic systems.
• Experience supporting Buckets & Blades, Large Mining Trucks (LMT), or similar heavy mining equipment.
• Experience performing root cause failure analysis and machine evaluations.
• Experience reading and interpreting engineering drawings, hydraulic schematics, and electrical diagrams.
• Prior Caterpillar dealer, proving ground, product support, field service, or mining industry experience.
• Experience mentoring and training technicians and mechanics.

Additional Information

• Primary Location: Tucson Proving Ground – Green Valley, AZ (on-site full-time)
• Relocation: Not available
• Travel: Up to 10% (including field support activities)
• Visa Sponsorship: Not available

Posting Date

08/26/2026 - 09/09/2026

Summary Pay Range

$24.75 - $37.15

Benefits

Subject to plan eligibility, terms, and guidelines. This is a summary list of benefits.

• Medical, dental, and vision benefits*
• Paid time off plan (Vacation, Holidays, Volunteer, etc.)*
• 401(k) savings plans*
• Health Savings Account (HSA)*
• Flexible Spending Accounts (FSAs)*
• Health Lifestyle Programs*
• Employee Assistance Program*
• Voluntary Benefits and Employee Discounts*
• Career Development*
• Incentive bonus*
• Disability benefits
• Life Insurance
• Parental leave
• Adoption benefits
• Tuition Reimbursement
• These benefits also apply to part-time employees

Posting Dates

Any offer of employment is conditioned upon the successful completion of a drug screen.

Equal Opportunity Employer

Caterpillar is an Equal Opportunity Employer, Including Veterans and Individuals with Disabilities. Qualified applicants of any age are encouraged to apply.