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Quality Control Technician - Concrete

Job in Sioux City, Woodbury County, Iowa, 51110, USA
Listing for: Knife River Corporation
Full Time, Seasonal/Temporary position
Listed on 2026-03-14
Job specializations:
  • Manufacturing / Production
    Quality Engineering
Salary/Wage Range or Industry Benchmark: 10000 - 60000 USD Yearly USD 10000.00 60000.00 YEAR
Job Description & How to Apply Below
Position: QUALITY CONTROL TECHNICIAN - CONCRETE

KRM IA W QC
2220 HAWKEYE DRIVE
SIOUX CITY, IA 51105, USA

Good Pay! Good Benefits! Good People! Knife River is a PEOPLE-first company. Our team members are key to our success, and we are committed to giving them the tools, training, and time to do their jobs productively and go home safely each day. Please consider joining our growing team today!

At Knife River, we take care of our team because we know it’s our people who make us successful. We are one of the 10 largest construction materials producers/contractors in the Country. Our goal is to build strong teams that, in turn, build strong communities. We are also a publicly traded company on the NYSE with the ticker symbol KNF and part of the S&P Mid Cap 400 index.

ROLE OVERVIEW:

This is a seasonal position, you can use your winters off to travel, hunt, fish or for other activities you enjoy while your benefits continue year-round.

This position is responsible to safely collect samples of concrete and asphalt, crushed stone, aggregate, sand or gravel and test for conformance to specifications.

The typical schedule is Monday - Friday 6:00 AM - 6:00 PM with Saturday as needed. During maintenance season the typical schedule is Monday - Friday 8:00 AM - 4:00 PM. Hours may vary depending on weather and customer demand.

DUTIES AND/OR RESPONSIBILITIES (summary of components that make up the job)

  • Safely and properly perform laboratory tests on variety of materials (Aggregate, Asphalt and/or Concrete).
  • Collect material samples, identify material, and compile statistical data on test results
  • Perform necessary tests (i.e., gradations, incinerations, rice tests, marshall tests, %crushed, etc.)
  • Examine and evaluate data – determine material quality in relation to specifications.
  • Present alternative actions in relation to the evaluation.
  • Perform arithmetic operations and report findings and needed actions.
  • Maintain lab and equipment.
  • Perform daily housekeeping.
  • Conduct finished and in-process inspections.
  • Communicate effectively (verbal, listening, written) and work with difficult people under high stress situations. Self-motivated, team-player with good interpersonal skills; ability to maintain positive customer relations & act courteous/respectful of others. Communicate test results to appropriate stakeholders.
  • Ensure work activities comply with OSHA, EPA, safety and environmental regulations. Good housekeeping skills.
  • Performs other duties as assigned.

MINIMUM REQUIREMENTS (minimum educational, experience, or other relevant job requirements)

  • General education, grammar and arithmetic, GED or high school diploma or equivalent.
  • Ability to provide and maintain proper certifications, licensure and acceptable driving record.

BENEFITS:

  • Health Savings and Flexible Spending Accounts
  • 401(k) with Company Match
  • Profit Sharing
  • Paid Time Off
  • Paid Sick Time
  • 8 Paid Holidays
  • Company Paid Life and AD&D Insurance
  • Short-term Disability
  • Employee Assistance Program
  • Years of Service Recognition
  • Voluntary Life Insurance for Employees, Spouses, and Dependents
  • Critical Illness Plan
  • Hospital Indemnity

ADDITIONAL INFORMATION:

Knife River is an Equal Opportunity/Affirmative Action employer. All qualified applicants will receive consideration for employment without regard to race, age, color, religion, gender, gender identity, sexual orientation, national origin, disability, protected Veteran status or any other protected category under applicable state/federal laws.

Subject to pre-employment drug testing and background checks.

All applications are submitted online. If you are having issues completing the application, please come to the office for assistance.

Equal Opportunity Employer/Protected Veterans/Individuals with Disabilities
This employer is required to notify all applicants of their rights pursuant to federal employment laws. For further information, please review the Know Your Rights notice from the Department of Labor.

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