Precision Soils Lab Technician — Daytime, Training & Growth

Construction Material Testing; San Francisco (CA); On-site; USD 34,000 - 48,000; Full time

Job summary

Construction Material Testing is seeking a Laboratory Technician to perform ASTM testing and manage the documentation that proves every result. You will work within a documented quality system and be responsible for calibration and chain-of-custody logs.

Responsibilities include breaking cylinders, recording strength results on the same day, and supporting proficiency programs with accreditation bodies. The role combines hands-on testing with strict quality controls in a laboratory setting.

Qualifications

• Attention to detail with careful handling and accurate documentation.
• Willingness to train; prior lab or CMT experience is a plus but not required.
• Ability to perform repetitive, precision-driven work accurately.

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

Skills

Careful hands

Documentation habits

Mechanical aptitude

Willingness to train

Repetitive precision work

Job description

Construction Material Testing is seeking a Laboratory Technician to perform ASTM testing and manage the documentation that proves every result. You will work within a documented quality system and be responsible for calibration and chain-of-custody logs.

Responsibilities include breaking cylinders, recording strength results on the same day, and supporting proficiency programs with accreditation bodies. The role combines hands-on testing with strict quality controls in a laboratory setting.