Roadside Assistance Mechanic

National-Wrecker-Service; Portsmouth (NH); On-site; USD 52,000 - 61,000; Full time

Benefits offered by this job

Health and dental insurance

Life insurance

Disability coverage optional

401(k) with company match

Paid time off

Uniforms provided

Job summary

National Wrecker Service in Portsmouth, NH is hiring a full-time Roadside Assistance Mechanic to diagnose and repair diesel trucks on-site, with a 4-on/4-off schedule and day shift 8am–8pm. You’ll respond to stranded drivers, perform on-the-spot maintenance, and get trucks safely back on the road.

We offer health, dental, life, disability coverage, 401(k) matching, PTO, uniforms, and a path for long-term career growth in a family-owned operation established since 1974.

Qualifications

• Diesel mechanic experience required.
• Heavy truck repair experience required.
• Knowledge of diesel makes (Cummins, Detroit, International, Hino, Isuzu).
• Experience with 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

• Perform on-site repairs and maintenance for diesel trucks and trailers.
• Troubleshoot and repair engines and components.
• Diagnose with computer diagnostics and electrical work.
• Address air system issues and related repairs.
• Work on steering, suspension, air brakes, and general heavy-truck systems.

Skills

Diesel mechanic

Heavy truck repair

Electrical systems

Air system diagnostics

On-site diagnostics

Medical card

Job description

National Wrecker Service is expanding, and we are actively seeking a skilled full-time Roadside Assistance Mechanic to join our team in Portsmouth, NH. With a steady 4-on/4-off schedule and a role designed for technicians who thrive in the field, this opportunity is built for professionals who enjoy meaningful, hands‑on work!

WHAT YOU'LL BE DOING:

Our Roadside Assistance Mechanics are the heroes who keep New England's trucks and trailers moving. When a driver is stranded, stressed, and losing valuable hours - you are the one who shows up, diagnoses the issue, and gets them safely back on the road. It's more than repair work... it's meaningful, high‑impact service.

You’ll handle on‑site repairs and maintenance for diesel trucks and trailers, including:

• Troubleshooting and repairing Cummins, Detroit, International, Hino, Isuzu, and more
• Performing computer diagnostics and electrical work
• Solving air system issues and performing related repairs
• Working on steering, suspension, air brakes, and general heavy‑truck systems

What You’ll Need:

• 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

COMPENSATION & SCHEDULE:

• Pay: $38/hr starting hourly rate, plus incentives on night calls
• Full‑time schedule – 4 days on / 4 days off
• 8am–8pm on shift (report to central location)
• On‑call 8pm–8am during the same 4 days (option to take the truck home if you live close)

WHAT ELSE YOU'LL RECEIVE:

• Health and dental insurance
• Life insurance
• Short- and long-term disability coverage optional
• 401(k) with company match
• Paid time off (PTO)
• Provided uniforms

COME THRIVE WITH US!

Since 1974, National Wrecker Service has been a trusted leader in towing, recovery, and emergency roadside assistance across New England. Our mission is rooted in delivering reliable, clean, damage‑free service at competitive prices - and we achieve this through a dedicated team that upholds strong values: trustworthiness, quality, and results‑driven performance. We maintain a culture built on teamwork, honesty, and continuous improvement. Employees join us not just for a job, but for a long‑term career backed by training, advancement opportunities, and the support of a well‑established, family‑owned operation.