Precision Materials Lab Technician – Soils & Concrete

Construction Material Testing; Miami (FL); On-site; USD 34,000 - 48,000; Full time

Job summary

Construction Material Testing is seeking a Laboratory Technician to turn field samples into numbers for Proctor curves, sieve analyses, Atterberg limits, moisture contents, and compressive strength breaks. You’ll operate in a documented AASHTO R18 quality system with calibrated equipment and full accountability for every result.

You will perform standard soil and concrete testing, maintain records, log samples, and report results with precision.

Qualifications

• Careful and precise manual work with attention to documentation.
• Experience in a lab or construction materials testing environment is a plus but not required.
• Comfortable with repetitive precision work and following documented procedures.

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 the same day.
• Support proficiency sample programs and accreditation assessments.

Skills

Careful hands

Documentation habits

Mechanical aptitude

Lab experience a plus

Job description

Construction Material Testing is seeking a Laboratory Technician to turn field samples into numbers for Proctor curves, sieve analyses, Atterberg limits, moisture contents, and compressive strength breaks. You’ll operate in a documented AASHTO R18 quality system with calibrated equipment and full accountability for every result.

You will perform standard soil and concrete testing, maintain records, log samples, and report results with precision.