Quality Control Lab Technician

CalPortlandCalPortlandSan Diego, California, United States
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Posted

9/16/2026

Employment

Full time

Range

$58k - $70k/year

Work style

On-site

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AI summary

Core responsibilities

The technician will perform quality control testing on concrete and aggregates, including compression, gradation, and field tests. They are also responsible for reporting results, maintaining equipment, and preparing trial batches at production plants.

Requirements overview

Candidates must possess a high school diploma or GED and obtain ACI and DOT certifications within the first year. The role requires physical capability to lift up to 100 pounds and the ability to work in various weather conditions.

Key skills

Quality control testingConcrete testingAggregate testingCompression testingGradation testingEquipment calibrationData entryTroubleshootingSafety complianceMicrosoft OfficeSAP software

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Education requirements

high schoolprofessional certificate

About CalPortland

Industry

Wholesale Building Materials

Employees

1,311

Type

Privately Held

Size

1,001-5,000 employees

Established in 1891, CalPortland is a major building materials and construction solutions provider to the Western United States and Canada. We provide solutions to your greatest construction challenges with expertise in cement production and distribution, ready mixed concrete, aggregate, asphalt, construction services and other building materials. CalPortland is committed to solving tomorrow's challenges today through the advancement of sustainable materials and renewable technologies. The recognition by US EPA ENERGY STAR over the last twenty consecutive years (2005 - 2024) is a feat that is unmatched by any other U.S. building materials company.

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Job categories

ConstructionManufacturingScience & ResearchTrades

Description

Job Summary The Quality Control Lab Technician will perform quality control testing and reporting duties in the concrete and concrete aggregates testing laboratory. This position is for our Superior Ready Mix Location in Mission Gorge, San Diego.Benefits CalPortland is proud to offer a comprehensive, competitive benefits package that provides health and financial support to our most important resources: our employees. Your benefits are an important part of your overall compensation at CalPortland. That’s why we give you a wide range of benefits to choose from.  Medical, Dental, Vision  low-cost premiums even for family coverage Company-paid life/AD&D insurance Company-paid short-term disability Paid sick/vacation/holiday 401k/Company Funded Pension Program (program is dependent upon location and job type) Employee Assistance Program (EAP) Additional voluntary benefits  Compensation $58,000.00 - $70,000.00 DOE  Responsibilities Perform all aspects of stripping, curing, capping, and compression testing in the concrete and concrete aggregates testing lab Report concrete cylinder strength test results according to ACI standards Process aggregate field test samples and reduce to the appropriate testing size Concrete testing to include temperature, slump, density, air content, cylinders, etc. Perform gradation tests on rock and sand samples along with additional tests such as durability, moisture, cleanliness value, #200 wash, sand equivalency, specific gravities, and absorptions Enter test results daily into a computer database and distribute reports to appropriate individuals Gather cement, fly ash, and aggregate materials at production plants in preparation for concrete trial batch tests Accurately weigh up each material as listed in the trial batch sheets and set up equipment for trial testing Conduct scheduled calibrations on test equipment per the calibration schedule Always maintain work area and office equipment in a safe and clean condition  Troubleshoot job problems and handle job complaints (out-of-spec aggregates, low breaks, Schmidt hammer, cracking, coring) Analyze aggregate and strength reports and identify trends Work directly with suppliers, vendors, and internal customers, as necessary Education High school diploma/GED DOT Soils and Aggregate Certification  ACI Strength Testing Certification and ACI Aggregate Testing Technician Level 1 Requirements/Qualifications Obtain and maintain the following: ACI Concrete Strength Testing (within six (6) months in position) DOT Soil and Aggregate and/or ACI Aggregate Testing Technician Level 1 (within 1 year in position) Job requires the following motions: climbing, bending, squatting, lifting, sitting, stretching, vibration, twisting, pushing/pulling of controls, and riding on rough terrain, use of hand tools such as wrenches and screwdrivers, driving/walking on uneven ground, and climbing stairs Frequent lifting up to 75 pounds, occasional lifting of 100 pounds May be exposed to extremes of hot or cold weather and be able to work in wet environments Must be able to work flexible hours with varying start and stop times Overtime work will be required as needed by the company Must meet OSHA 10 guidelines and be able to follow all CalPortland Safety Policies ANSI-approved PPE will be provided and must be used when required Must be able to speak, read, and write in English Able to work cooperatively with others Must have a valid driver’s license and be insurable Technician subject to random drug and alcohol screens as required by the company May be required to perform Field Technician duties based on business need Preferred: Intermediate skills in Microsoft Office Suite and SAP software Conditions of Employment Successful candidate must submit to a post-offer pre-employment physical examination, drug/alcohol screen, and background check. Some positions require Federal Motor Carrier Safety Administration (FMCSA) registration/clearance as well as ongoing alcohol and drug testing.

Requirements

  • Quality control testing
  • Concrete testing
  • Aggregate testing
  • Compression testing
  • Gradation testing
  • Equipment calibration
  • Data entry
  • Troubleshooting
  • Safety compliance
  • Microsoft Office
  • SAP software

Benefits

  • Medical insurance
  • Dental insurance
  • Vision insurance
  • Life insurance
  • AD&D insurance
  • Short-term disability
  • Paid sick leave
  • Paid vacation
  • Paid holidays
  • 401k
  • Company funded pension program
  • Employee assistance program

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