Materials QA/QC Technician — Precast Concrete

Build quality that lasts. Shape infrastructure that serves millions.

At Thompson Pipe Group in Rialto, CA, you’ll be the quality voice inside a fast-moving precast concrete operation. As our Materials QA/QC Technician, you’ll partner closely with Production to validate that every pipe we ship meets rigorous, project-specific standards. Compensation: $23/hr (DOE).

A day in this role

You start your shift on the plant floor, PPE on and clipboard in hand. First stop: verifying overnight production fabrication, test, and inspection reports. Before the first truck loads, you’re in the lab pulling samples for aggregate tests, preparing bar specimens for steel tensile test reports, and coordinating joint assembly test reports for today’s runs. Throughout the day you coach operators who carry QC responsibilities, spot-check cure results, and document anything that needs follow-up. When a project has special specifications, you’re the one aligning the team to those extra quality procedures. You wrap with data entry, sign-offs, and a quick huddle with the supervisor on tomorrow’s priorities.

What you’ll take on

• Monitor all aspects of quality under the supervision and direction of the supervisor
• Complete and maintain steel tensile, aggregate, and joint assembly test reports
• Compile production fabrication, testing, and inspection documentation
• Assist Production personnel carrying quality control duties
• Ensure compliance with any additional or special QA procedures required by project specs
• Pitch in on other tasks as assigned

What you bring

• ACI Field Grade 1 certification required
• High school diploma or GED
• Background in QA or Production within a related industry preferred
• Familiarity with concrete technology, welding, and NDE/NDT a plus
• Proficiency with Microsoft Office
• Bilingual English/Spanish capability

Physical and work environment

• Lift up to 50 lbs; stand, walk, and stoop throughout the shift
• Keep pace with manufacturing requirements and consistent attendance
• Operate tools and equipment safely; perform strenuous work in outdoor conditions (dust, rain, wind)
• Comfort using PPE: earplugs, hard hat, steel-toed boots, gloves, safety glasses

Not a warehouse role—this is hands-on precast concrete pipe manufacturing.

Benefits and growth

• Medical, Vision and Dental, Life Benefits
• Life & Supplemental Life
• Company-matched 401(k)
• Vacation & Sick Leave
• Training and Development
• Career Opportunity
• $1,000 Referral Bonus

About Thompson Pipe Group

We’re a privately held, family-led team of engineers, contractors, and manufacturers headquartered in Rialto, California. From humble beginnings, we’ve grown into North America’s most diverse provider of drainage, sanitary, pressure, and trenchless pipe solutions—with manufacturing locations nationwide. Learn more: www.thompsonpipegroup.com

Where to find us

3009 N Laurel Avenue, Rialto, CA 92377

Important notices

Note: Nothing in this job description restricts management’s right to assign or reassign duties and responsibilities to this job at any time. The above statements are intended to describe the general nature and level of work being performed by people assigned to this classification. They are not intended to be construed as an exhaustive list of all responsibilities, duties, and skills required of personnel so classified.

Compliance statements Reasonable accommodation may be made to enable individuals with disabilities to perform the essential functions upon request. Thompson pipe group is an Equal Employment Opportunity (EEO) employer that welcomes all qualified applicants. Applicants will receive fair and impartial consideration without regard to race, sex, color, national origin, age, disability, veteran status, genetic data, gender identity, sexual orientation, religion or another legally protected status, or any other classification protected by federal, state, or local law. EOE/AA – M/F/Vet/Disability Must pass Pre-employment Physical and drug test. Drug-free workplace. Ready to apply?

Submit your application today and help us deliver quality that endures.