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Field Technician (Density Testing/ACI Grade I-Wilsonville, OR

Shared Services Group Inc
Wilsonville, OR Full Time
POSTED ON 8/14/2026
AVAILABLE BEFORE 10/14/2026

Certerra is a growing national provider of testing, inspection, and certification services that support innovation in new product development, quality assurance, for project delivery, and engineered solutions for asset management. We are passionate about contributing to the sustainable development of the communities we serve. We are a national firm with a global reach serving national and international clients from 30 offices located in 10 states and are ranked on ENR’s Top 500 list alongside the nation’s top firms. With a 60-year history, Certerra has a passion for high-end services, constant innovation, and investment in the development of world-class laboratory facilities, and interactive management technologies. Each member of our staff is committed to service, innovation, and the success of our clients.

Job Summary: 

Performs field materials testing and construction inspection services in support of commercial, industrial, transportation, and public infrastructure projects. 

Responsibilities include:  

Performing in-place density testing, fresh concrete testing, documenting test results, and ensuring work is completed in accordance with project specifications, applicable ASTM/AASHTO standards, and client requirements. Coordinates daily with project managers, contractors, and clients to support construction activities while maintaining a strong commitment to safety, quality, and customer service.

Duties:

  • Perform nuclear density testing on soil, aggregate base, and asphalt to verify compaction requirements.
  • Conduct ACI Grade I fresh concrete testing, including slump, air content, temperature, unit weight, and fabrication of compressive strength cylinders.
  • Prepare accurate field reports and daily documentation using electronic reporting systems.
  • Communicate test results and field observations to project managers, contractors, and clients.
  • Verify testing is performed in accordance with project specifications, ASTM, AASHTO, DOT, and agency requirements.
  • Coordinate daily schedules with dispatch and project management to support multiple active construction projects.
  • Maintain, calibrate, and transport testing equipment in accordance with company quality procedures.
  • Identify and communicate non-conforming conditions observed during testing.
  • Maintain current certifications and participate in ongoing technical training.
  • Follow all company safety policies, client safety requirements, and OSHA regulations.
  • Represent the company professionally while providing responsive customer service in the field.

Education/Qualifications:

  • High School Diploma/ GED

Certifications/Licenses:

  • ACI Concrete Field-Testing Technician – Grade I
  • Nuclear Gauge Safety Certification
  • Valid Driver's License

Portland, Aurora Tualatin Durham Stafford Tigard Milwaukie Beaverton

We are an Equal Opportunity Employer. This Company is dedicated to both the letter and the spirit of the equal opportunity employment laws. All applicants and all employees will be evaluated based on their ability, competence, and performance of the essential functions of their positions. There will be no discrimination based on race, sex, national origin, religion, age 40 and over, disability, sexual orientation, marital status, or any other classification which may be protected by federal, state, or local laws. In compliance with the Americans with Disabilities Act, we specifically offer equal opportunity for all employees or job applicants who may have a physical or mental disability. Such people will be hired based on their ability to perform the essential functions of the job in question. Likewise, their work will be evaluated on their performance of these essential functions. We will offer reasonable accommodation to individuals with disabilities, to the extent that Company resources allow without undue hardship. As part of our equal employment policy, there will be no wage differentials based on gender, between men and women employed in the same establishment, on jobs that require equal skill, effort, and responsibility, and which are performed under similar working conditions.

Salary : $32

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