Great Pay! Great Benefits! Strong Teams! Knife River is a PEOPLE-first company. Our teams are the foundation of our success, and we're committed to providing the training, tools and support to do great work and go home safely at the end of each day. Join a team that looks out for one another and supports career growth from day one.
The Quality Control Technician is responsible for quality control testing and reporting duties in the concreate and aggregates testing laboratory; responsible for pulling samples from stockpiles, testing and evaluating materials and comparing it to the specifications.
If unable to apply online, mail completed application to: PO Box 6099 Stockton, CA 95206

Knife River is one of the top 10 aggregate, ready-mix and sand and gravel producers in the nation. At peak construction season we employ more than 5,000 men and women who have been widely recognized for their superior customer service. We are sitting on a foundation of more than 1.1 billion tons of aggregate and provide a wide variety of products and services necessary for building America’s infrastructure.
Since purchasing the first aggregate company in 1992, Knife River has become one of the fastest-growing aggregate and construction companies in the central, southern and western United States. We have acquired nearly 70 companies located in 14 states and are licensed to perform work in many more.
Our core business lines include aggregate, asphalt, ready-mix concrete, liquid asphalt and cement.