Lead Mechanic

Dassel's Energy; Hollister (MO); Hybrid; USD 62,000 - 69,000; Full time

Benefits offered by this job

Medical, dental, vision

HSA & FSA

401(k) match

Paid holidays PTO

Life/AD&D insurance

Long-term disability

EAP program

Supplemental life coverage

Job summary

Dassel's Energy in Hollister, CA is seeking a hands-on Heavy‑Duty Diesel Mechanic to diagnose, repair, and maintain fleet trucks. You’ll split time between a repair shop and field work, handling diagnostics, preventive maintenance, and road-side calls under safety protocols.

The role requires troubleshooting mechanical, electrical, and hydraulic systems, with opportunities to lead repairs and document work in the system.

Qualifications

• Hands-on experience diagnosing and repairing heavy‑duty diesel trucks
• Troubleshoot mechanical, electrical, and hydraulic systems independently
• Strong safety practices in a shop and roadside environment
• Ability to perform physically demanding work
• Own set of tools required

Responsibilities

• Diagnose, repair, and maintain heavy‑duty diesel trucks and equipment
• Use diagnostic tools to identify root causes and complete repairs efficiently
• Perform preventative maintenance to reduce breakdowns and extend vehicle life
• Respond to roadside service calls, including emergency repairs
• Inspect vehicles for safety and regulatory compliance
• Accurately document repairs, inspections, and parts used
• Follow safety protocols, including PPE and proper handling
• Communicate clearly with the team about repair status and delays
• Maintain and manage your personal toolset
• Participate in an on-call rotation and overtime when needed

Skills

Heavy‑duty diesel

Troubleshooting

Safety practices

Physical stamina

Personal tools

Tools

Diagnostic tools

Job description

Dassel's Hollister
Hollister, CA 95023, USA

Description

Why This Role Matters

When a truck is down, operations slow, customers wait, and costs climb. In this role, you keep critical equipment moving, diagnosing issues quickly, making reliable repairs, and getting drivers safely back on the road. Your work directly impacts uptime, safety, and the company’s ability to deliver on its commitments every day.

What You’ll Actually Do in Your First 30 Days

• Learn the fleet, common failure points, and shop processes while shadowing experienced mechanics on diagnostics and repairs
• Complete preventative maintenance on assigned vehicles and document work accurately in the system
• Begin handling straightforward repairs independently (e.g., brakes, electrical issues, inspections)
• Join at least one roadside service call to understand expectations for response time, safety, and communication

What You’ll Be Responsible For

• Diagnose, repair, and maintain heavy-duty diesel trucks and equipment (engine, transmission, electrical, brake, and hydraulic systems)
• Use diagnostic tools to identify root causes and complete repairs efficiently
• Perform preventative maintenance to reduce breakdowns and extend vehicle life
• Respond to roadside service calls, including emergency repairs in real-world conditions
• Inspect vehicles for safety and regulatory compliance
• Accurately document repairs, inspections, and parts used
• Follow safety protocols, including PPE and proper handling of equipment and materials
• Communicate clearly with the team about repair status, delays, or additional issues
• Maintain and manage your personal toolset required for the role
• Participate in an on-call rotation and work overtime when needed to support operations

What Success Looks Like (First 90 Days)

• You can independently diagnose and repair most common mechanical and electrical issues across the fleet
• Preventative maintenance tasks are completed on schedule with minimal rework
• Roadside calls are handled safely and efficiently, with clear communication back to the team
• Documentation is accurate and up to date, enabling smooth tracking of repairs and compliance

Must Have

• Hands‑on experience diagnosing and repairing heavy‑duty diesel trucks
• Ability to troubleshoot mechanical, electrical, and hydraulic systems independently
• Strong understanding of safety practices in a shop and roadside environment
• Ability to perform physically demanding work (lifting, bending, working in confined spaces)
• Personal set of tools required to perform core mechanic duties

Nice to Have

• Commercial Driver’s License (CDL)
• ASE certification
• Experience performing roadside or field repairs

You’ll split your time between a repair shop and field work. Some days you’ll be working on engines in the shop; others, you may be repairing a truck roadside in varying weather or traffic conditions. The role includes exposure to noise, fumes, moving equipment, and hands‑on physical work, with safety protocols in place to protect you.

How the Team Works

This is a hands‑on, team-oriented shop where mechanics communicate frequently to solve problems and keep jobs moving. Work is scheduled, but priorities shift when breakdowns happen—so the team rallies to respond quickly and support each other during high‑demand periods like roadside calls or urgent repairs.

Pay: $45-50 per hour (based on experience)

Benefits include:

• Medical, dental, and vision insurance options
• Health Savings Account (HSA) & Flexible Spending Account (FSA)
• 401(k) with company match
• Paid holidays and paid time off
• Company‑paid $50,000 life/AD&D insurance
• Long‑term disability coverage
• Employee Assistance Program (EAP)
• Optional supplemental life and short‑term disability coverage

Our Culture

We’re a growing company with deep roots in local communities, and we take pride in doing right by our customers and each other. People here are practical, supportive, and straightforward, we work hard, help when things get busy, and value trust over hierarch

Equal Opportunity Employer
This employer is required to notify all applicants of their rights pursuant to federal employment laws.For further information, please review the Know Your Rights notice from the Department of Labor.