Quality Control Technician — Concrete & Materials Testing

Knife River Corporation; Clarkston (WA); On-site; USD 45,000 - 65,000; Full time

Job summary

Knife River Idaho Division is seeking a Quality Control Technician to join our Lewiston/Clarkston area team. The role focuses on materials sampling, testing, and documentation across concrete materials and related QC procedures, with potential travel and extended hours as needed.

Qualified candidates typically have 2+ years in aggregate/concrete testing, plus certifications such as ACI-Field Grade 1 and WAQTC aggregate. We value safety, reliability, and readiness to support field operations.

Qualifications

• Minimum 2 years’ experience with aggregate/concrete materials and knowledge of testing procedures.

Responsibilities

• Responsibilities include materials sampling and testing documentation/logging and various quality control procedures.

Skills

Materials sampling

Testing procedures

Tools

ACI-Field Grade 1

WAQTC aggregate certification

NRMCA

Job description

Knife River Idaho Division is seeking a Quality Control Technician to join our Lewiston/Clarkston area team. The role focuses on materials sampling, testing, and documentation across concrete materials and related QC procedures, with potential travel and extended hours as needed.

Qualified candidates typically have 2+ years in aggregate/concrete testing, plus certifications such as ACI-Field Grade 1 and WAQTC aggregate. We value safety, reliability, and readiness to support field operations.