Job Description

Job Title: Quality Control Inspector – Vehicle Upfitting
Location: Surprise, Arizona
Company: Interstate Assembly Systems

Interstate Assembly Systems — a leading provider of custom service vehicles, specialty upfits, and precision-built assemblies — is seeking a highly skilled Quality Control Inspector to support our growing production operations in Surprise, Arizona. As an ISO 9001:2015–certified manufacturer serving commercial and government clients, we rely on rigorous quality standards, technical accuracy, and craftsmanship. This role is ideal for mechanically strong candidates with experience in cranes, diesel systems, electrical diagnostics, hydraulics, or CAN Bus systems who take pride in ensuring every vehicle leaves the facility ready for real-world performance.

The QC Inspector plays a critical role in validating build quality, verifying compliance with customer specifications, and supporting continuous improvement across the production floor. You will collaborate closely with assembly teams, engineering, sales operations, and leadership to uphold Interstate Assembly’s reputation for reliability, safety, and precision.

Primary Responsibilities

• Conduct comprehensive inspections of materials, components, sub-assemblies, and completed vehicles to ensure compliance with engineering specifications, safety standards, and customer requirements.
• Perform functional testing and measurements using appropriate tools, gauges, and diagnostic equipment.
• Document findings using Record360 and internal digital systems, ensuring accurate, timely, and detailed inspection reports.
• Verify corrective actions are completed by assembly teams and meet quality expectations before final approval.
• Monitor production processes to ensure adherence to established work instructions, quality standards, and safety protocols.
• Recommend process improvements and collaborate with supervisors to implement corrective or preventive actions.
• Apply industry codes and regulations, including OSHA, ANSI, CMAA, HMI, and other applicable standards.
• Assist with chassis check-in, documentation, and verification using internal software and inspection workflows.

Preferred Technical Experience

Candidates with any of the following will be prioritized due to the nature of Interstate Assembly’s custom vehicle and crane-integrated builds:

• Crane operation, crane assembly, or overhead crane inspection experience
• Diesel mechanic background, including troubleshooting and repair
• Electrical systems knowledge, including wiring, schematics, and diagnostics
• CAN Bus diagnostic or troubleshooting experience
• Hydraulic and pneumatic system familiarity
• Experience with material-handling equipment, service bodies, or custom upfits

Knowledge, Skills & Abilities

• Excellent attendance and reliability; ability to work overtime as needed
• Strong verbal and written communication skills
• Forklift operation experience
• Self-motivated with a strong work ethic and commitment to quality
• High attention to detail and cleanliness in work areas
• Ability to lift up to 75 lbs. regularly
• Familiarity with OSHA, ANSI, CMAA, HMI, MIOSHA Part 18/20, and related standards for cranes and hoisting systems
• Strong mechanical aptitude and problem-solving ability

Experience & Education Requirements

• Valid Driver’s License (CDL a plus)
• Strong mechanical knowledge and hands-on experience
• Must provide basic tools
• Demonstrated ability to identify quality issues and ensure corrective action
• Crane certification a plus
• Experience with hydraulic and air systems preferred

Working Conditions & Physical Demands

• Standard work schedule with occasional evenings, weekends, or holidays based on production needs
• Frequent standing, walking, reaching, and repetitive motion
• Regular stooping, kneeling, crouching, crawling, and occasional climbing or balancing
• Ability to regularly lift/move up to 35 lbs. and occasionally up to 75 lbs.
• Frequent use of hands, wrists, and forearms for forceful or repetitive tasks

The physical demands are representative of those that must be met by an employee to successfully perform the essential functions of this job. Reasonable accommodation may be made to enable individuals with disabilities to perform the essential functions.

Please note this job description is not designed to cover or contain a comprehensive list of activities, duties or responsibilities that are required of the employee for this job. Duties, responsibilities and activities may change at any time with or without notice.

Interstate Companies is an Equal Opportunity Employer, and we encourage all qualified and interested people to apply for this position by submitting a resume for consideration.

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