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Diesel Mechanic

Robertson's Ready Mix
El Cajon, CA Full Time
POSTED ON 7/24/2026
AVAILABLE BEFORE 9/23/2026

Job Summary

Robertsons Ready Mix is seeking a skilled and dependable Diesel Mechanic to join our maintenance team in El Cajon, California. The ideal candidate will have at least 2 years of experience performing diagnostics, repairs, and preventative maintenance on semi-trucks, cement mixers, or other heavy-duty diesel equipment. This position is critical to ensuring our fleet remains safe, reliable, and operational.

Responsibilities

  • Diagnose and repair mechanical, electrical, hydraulic, and pneumatic systems on diesel-powered vehicles.
  • Perform preventative maintenance and routine inspections on semi-trucks and ready-mix cement mixer trucks.
  • Troubleshoot engine, transmission, brake, suspension, and driveline issues.
  • Conduct DOT inspections and ensure vehicles meet safety standards.
  • Replace and repair defective parts, components, and systems.
  • Maintain accurate service and repair records.
  • Work closely with fleet management to prioritize repairs and minimize downtime.
  • Follow all company safety policies and procedures.

Required Qualifications

  • Minimum 2 years of diesel mechanic experience working on semi-trucks, cement mixers, or heavy-duty equipment.
  • Strong knowledge of diesel engines and truck maintenance.
  • Ability to diagnose and troubleshoot mechanical issues efficiently.
  • Ability to lift up to 50 pounds and work in a maintenance shop environment.

Preferred

  • CDL (Commercial Driver's License).
  • ASE Certifications or equivalent training.
  • Experience with fleet maintenance software.
  • Welding or fabrication experience.

Skills

  • Diesel engine diagnostics and repair
  • Preventative maintenance
  • Hydraulic and pneumatic systems
  • Electrical troubleshooting
  • Brake and suspension systems
  • Time management and attention to detail
  • Commitment to workplace safety

Benefits

  • Competitive pay based on experience
  • Medical, dental, and vision insurance
  • 401(k) with company match
  • Sick, vacation and holiday pay
  • Opportunities for training and career advancement
  • Stable, full-time employment with an established company

Schedule

  • Full-time
  • 5:00 a.m. shift
  • Monday–Friday (with occasional overtime as needed, including Saturdays)

How to Apply

If you're an experienced diesel mechanic looking to join a respected company with a strong commitment to safety and quality, we'd like to hear from you. Apply today and become part of the Robertsons Ready Mix team in El Cajon.

Robertsons Ready Mix is an Equal Opportunity Employer.

Pay: $23.00 - $35.00 per hour

Benefits:

  • 401(k) matching
  • Dental insurance
  • Health insurance
  • Life insurance
  • Vision insurance

Work Location: In person

Salary : $23 - $35

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