Field Service Mechanic – Heavy-Duty Trucks (DFW)

Interstate Companies, Inc.; Grand Prairie (TX); On-site; USD 55,000 - 69,000; Full time

Benefits offered by this job

Competitive wages

Uniforms supplied

Tool program

Tuition assistance

Health, dental and vision

PTO

Holidays

401(K)

Long Term Disability

Short Term Disability

Life Insurance

Healthiest You

PPE Reimbursement

Pet Insurance

Employee Discounts

EAP

Well-being screening

Job summary

Interstate Assembly Systems is seeking a skilled Field Service Mechanic to service heavy‑duty trucks and equipment in the Dallas–Fort Worth metroplex. You’ll troubleshoot mechanical, hydraulic, and electrical issues in the field, perform welding, crane operation, and system testing, with extensive daily travel and potential overnight trips.

The role requires 3–5 years on heavy-duty hydraulics and diesel systems, a valid driver’s license (CDL a plus), and the ability to read manuals and

Qualifications

• Minimum of 3-5 years of experience working on heavy-duty trucks or equipment.
• Experience repairing hydraulic systems, cranes, welders, and air compressors.
• Strong knowledge of diesel engines, electrical systems, and heavy-duty vehicle diagnostics.
• Welding and fabrication skills (MIG, TIG, STICK) preferred.
• Valid driver's license; CDL a plus.

Responsibilities

• Conduct routine maintenance and inspections on heavy-duty trucks and their systems.
• Diagnose and repair mechanical, hydraulic, electrical, and pneumatic issues.
• Perform welding and fabrication as needed to repair or modify components.
• Operate and test cranes for safe operation and accuracy.
• Respond to client service calls in the field with timely solutions.
• Document all service work and parts used.

Skills

Heavy-duty trucks

Hydraulic systems

Cranes

Welders

Air compressors

Diesel engines

Electrical systems

Diagnostics

Welding skills

CDL

Job description

Interstate Assembly Systems is seeking a skilled Field Service Mechanic to service heavy‑duty trucks and equipment in the Dallas–Fort Worth metroplex. You’ll troubleshoot mechanical, hydraulic, and electrical issues in the field, perform welding, crane operation, and system testing, with extensive daily travel and potential overnight trips.

The role requires 3–5 years on heavy-duty hydraulics and diesel systems, a valid driver’s license (CDL a plus), and the ability to read manuals and