Materials Test Technician – Cryogenic Lab

Cfsenergy; Harvard (MA); On-site; USD 60,000 - 90,000; Full time

Job summary

Commonwealth Fusion Systems is seeking a materials testing technician to join our lab team, performing tensile, hardness, microscopy, and cryogenic testing, and supporting equipment maintenance.

You will execute tests, document results with rigor, follow SOPs, and collaborate with engineers and scientists in a fast-paced, safety‑driven R&D environment. Occasional travel and strict adherence to lab protocols are expected.

Qualifications

• High school diploma or higher.
• Minimum 2 years experience with basic materials prep and testing tools.
• Experience with mechanical and electrical assembly, vacuum, cryogenic systems, soldering and wiring is a plus.
• Experience operating tensile load frames and strain gauges.

Responsibilities

• Prepare test specimens and perform laboratory experiments.
• Conduct materials testing including tensile, fatigue, and fracture toughness tests.
• Operate testing equipment and manage data reporting in the lab.
• Support inventory management and equipment maintenance.
• Maintain documentation and ensure test quality across assignments.

Skills

Materials testing

Mechanical testing

Microscopy

Cryogenic testing

Data documentation

Safety procedures

Teamwork

Problem solving

Education

High school diploma or higher

Tools

Instron‑based systems

Bluehill software

Wavematrix

Vacuum systems

Metallography

Job description

Commonwealth Fusion Systems is seeking a materials testing technician to join our lab team, performing tensile, hardness, microscopy, and cryogenic testing, and supporting equipment maintenance.

You will execute tests, document results with rigor, follow SOPs, and collaborate with engineers and scientists in a fast-paced, safety‑driven R&D environment. Occasional travel and strict adherence to lab protocols are expected.