Diesel Technician - Mobile Mechanic

National Wrecker Service • Portsmouth, NH

23h • Hybrid

About The Position

National Wrecker Service is seeking a Diesel Technician - Mobile Mechanic for their Portsmouth, NH location. This is a full-time role with a 4-day on / 4-day off rotation, involving on-site shifts and on-call responsibilities. The company has a long-standing tradition of providing dependable roadside assistance and towing throughout New England for over 50 years, built on strong customer relationships, quality workmanship, and dedication to service. As a family-owned business, they foster a supportive culture where employees are valued and have opportunities for growth, emphasizing reliability, honesty, and excellence.

Requirements

• Diesel mechanic experience
• Heavy truck repair experience
• Knowledge of all makes, including Cummins, Detroit, International, Hino, Isuzu, etc.
• Knowledge of computer diagnostics and electrical systems
• Knowledge of air system diagnostics and repairs
• Understanding of steering, suspension, air brakes, and general truck systems
• Current medical card
• Valid driver's license and a clean driving record

Responsibilities

• Provide on‑site repairs and maintenance for diesel trucks and trailers
• Work with engines from Cummins, Detroit, International, Hino, Isuzu, and others
• Perform computer diagnostics and electrical troubleshooting
• Repair air systems, suspension, steering components, and air brakes
• Apply strong diesel knowledge and heavy-truck repair experience in the field

Benefits

• Health, dental, life insurance
• Short- and long-term disability coverage optional
• 401(k) with company match
• Paid time off (PTO)
• Uniforms

What This Job Offers

• Job Type: Full-time
• Career Level: Mid Level
• Education Level: No Education Listed