Mobile Diesel Mechanic

Now hiring for a Mobile Diesel Mechanic - Direct Hire

Location: Tucson, AZ

Pay Rate: $25.00 - $28.00 per hour

Schedule: Monday - Friday | 8 AM - 5 PM + Opportunities for overtime


At Staffmark, you're not just filling a Mobile Diesel Mechanic position - you're becoming a valued part of a team that wants you to succeed.


Looking for Mobile Diesel Mechanic jobs in Tucson where your skills can make a real impact? This opportunity offers the chance to contribute to a growing team, develop your experience, and build a rewarding career in a professional work environment.


If your skills and experience are a good match for this role please apply today.


Job Duties

Core Diagnostics & Mechanical Repairs

• Perform on-site diagnostic, maintenance, and repair services on heavy-duty diesel trucks and trailers.
• Perform off-site (breakdowns, at business) diagnostic, maintenance, and repair services on heavy-duty diesel trucks and trailers.
• Troubleshoot and repair complex vehicle systems, including electrical, anti-lock braking systems (ABS), air braking and pneumatic systems, transmissions, and differentials.
• Utilize computer diagnostic software and hardware to read error codes, analyze system performance, and clear active faults.

Testing & Quality Control

• Test-drive manual transmission vehicles and heavy equipment to evaluate performance, verify proper operation, and confirm repairs meet quality and safety standards.
• Conduct thorough pre- and post-repair inspections to identify wear, damage, or potential safety hazards.
• Maintain accurate service records, documenting work performed, diagnostic results, time spent, and parts utilized for each job.
• Follow all company safety protocols, DOT regulations, and industry standards to ensure a safe workspace for yourself and others.

Experience Requirements

• 3 years of diesel mechanic AND trailer repair experience
• Must pass DOT pre-employment screening
• Must have clear Motor Vehicle driving record
• Valid driver's license required
• Basic tools needed (you provide)

Physical Capabilities

• Physical requirements vary by assignment and will be discussed during the hiring process.
• Candidates should be able to safely perform the essential duties of the position with or without reasonable accommodation.
• Must be able to lift up to 50lbs.

Benefits - Offered by Our Client

• Dental insurance
• Health insurance
• Life insurance
• Paid time off
• Vision insurance
• Great worklife balance

Misael Found Steady Work-and You Can Too "I like working at Staffmark because there are many assignments available and reasonable pay." - Misael, Staffmark Associate

What You Will Do


As a Mobile Diesel Mechanic you will perform responsibilities that support the daily operations of your assigned employer while following established procedures, quality standards, and workplace safety requirements. Duties may include operating equipment, working with customers, handling materials, preparing documentation, supporting administrative activities, using technology, collaborating with team members, or completing other responsibilities appropriate to the position. Successful Mobile Diesel Mechanic professionals demonstrate adaptability, professionalism, attention to detail, and a commitment to producing quality work while contributing to organizational success.

• Core Diagnostics & Mechanical Repairs Perform on-site diagnostic, maintenance, and repair services on heavy-duty diesel trucks and trailers.
• Perform off-site (breakdowns, at business) diagnostic, maintenance, and repair services on heavy-duty diesel trucks and trailers.
• Troubleshoot and repair complex vehicle systems, including electrical, anti-lock braking systems (ABS), air braking and pneumatic systems, transmissions, and differentials.
• Utilize computer diagnostic software and hardware to read error codes, analyze system performance, and clear active faults.
• Testing & Quality Control Test drive manual transmission vehicles and heavy equipment to evaluate performance, verify proper operation, and confirm repairs meet quality and safety standards.
• Conduct thorough pre- and post-repair inspections to identify wear, damage, or potential safety hazards. • Maintain accurate service records, documenting work performed, diagnostic results, time spent, and parts utilized for each job. • Follow all company safety protocols, DOT regulations, and industry standards to ensure a safe workspace for yourself and others.

The Mobile Diesel Mechanic performs work that contributes directly to organizational productivity and customer satisfaction. This role requires dependable attendance, attention to detail, and the willingness to learn new skills as business needs evolve.


Successful Mobile Diesel Mechanic professionals demonstrate professionalism, adaptability, and a positive attitude while helping organizations achieve operational excellence.


This career offers opportunities to build valuable experience across a wide variety of industries.