Materials Lab Technician: Precision Soils & Concrete QC

Construction Material Testing; Rapid City (SD); On-site; USD 34,000 - 48,000; Full time

Job summary

Construction Material Testing is seeking a laboratory technician to convert field samples into precise numbers through Proctor curves, sieve analyses, Atterberg limits, and moisture contents, all within a documented AASHTO R18 quality system.

You will work with calibrated equipment, log samples, break cylinders, and report strength results on the same day, with training provided and opportunities to advance toward ACI NICET certifications.

Qualifications

• Careful hands and clean documentation habits are required.
• Prior lab or CMT experience is a plus, but training is provided.
• Comfortable with repetitive precision work.

Responsibilities

• Perform ASTM D698, D1557, D2216, D4318, C136, and C39 testing.
• Maintain calibration, standardization, and quality records.
• Log samples and preserve chain of custody.
• Break cylinders and report strength results on the same day.
• Support proficiency sample programs and accreditation assessments.

Skills

Careful hands

Clean documentation habits

Mechanical aptitude

Job description

Construction Material Testing is seeking a laboratory technician to convert field samples into precise numbers through Proctor curves, sieve analyses, Atterberg limits, and moisture contents, all within a documented AASHTO R18 quality system.

You will work with calibrated equipment, log samples, break cylinders, and report strength results on the same day, with training provided and opportunities to advance toward ACI NICET certifications.