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Materials Test Engineer Electrical
Job Location:
Job Location:
Somerville, NJ - USA
Monthly Salary:
Not provided by the employer
Monthly Salary:
Posted:
28 May 2026 (30+ days ago)
Posted:
Application Deadline:
10 September 2026
Application Deadline:
Vacancies:
1 Vacancy
Vacancies:
Job Summary
About Commonwealth Fusion Systems:
Commonwealth Fusion Systems is on a mission to deliver the urgent transition to fusion energy.
Combining decades of research top talent and new technologies were designing and building commercially viable fusion power plants. And were working with policymakers and suppliers to build the energy industry of the future.
Were in the best position to make it happen. Since 2018 weve raised nearly $3 billion in capital making us the largest and leading private fusion company in the world.
Now were looking for more thinkers doers builders and makers to join us. People wholl bring new perspectives solve tough problems and thrive as part of a team.
If thats you and this role fits we want to hear from you.
What youll do:
- Evaluate test and qualify materials and components for structural and functional applications within SPARC and ARC
- Own the execution and interpretation of electrical testing across coupon sub-assembly and component-level hardware including dielectric impulse and Paschen testing
- Author and maintain materials test specifications SOPs and calibration practices for testing equipment and test stands.
- Review interpret and report materials property data into version-controlled databases ensuring high quality and actionable recommendations for design teams
- Design develop and support custom electrical characterization test setups instrumentation and other custom test stands and test methods to meet evolving company needs
- Participate in the product design-build-test-learn cycles and retire technical risks by translating performance requirements into test plans and specifications
- Support the selection development and qualification of composite materials and translate performance requirements into material property specifications
- Work closely with other CFS teams including:
- Safety team to manage hazards in existing and new experiments
- Adjacent R&D teams to optimally share pooled resources including equipment and personnel
- Supply chain team to procure new equipment and materials
- Test validation and analysis for data generated by materials test operators and R&D technicians
What were looking for:
- BS in Materials science engineering mechanical engineering applied physics or related field
- 5 years of relevant experience
- Hands-on experience with process-structure-properties fundamentals of engineering composites (e.g. fiber-reinforced polymers)
- Experience in high-voltage and insulation-related testing including the ability to troubleshoot test setups instrumentation and unexpected test behavior
- Experience with with Paschen curves dielectric breakdown mechanisms and the fundamentals of electricity
- Proficiency in CAD (e.g. NX Solidworks) for the design of specialized electrical test fixtures and custom test stand components
- Experience managing multiple test requests and priorities independently including resource estimation and schedule communication
- Strong ability to analyze complex datasets to identify trends and performance risks in material insulation systems
- Experience mentoring junior engineers or technicians on electrical testing methods and laboratory safety protocols
- Understanding process-structure-properties-performance principles for composites
- Able to think creatively and possess strong troubleshooting and problem solving skills
- Demonstrated ability to work effectively cross-functionally
- Excellent organizational skills including prioritization of multiple concurrent projects
- Ability to break down complex problems into smaller deliverables that add value
Bonus points for:
- Experience with electrical testing in extreme environments(high temperature cryogenic vacuum)
- Prior experience authoring internal material specifications or working with international materials standards (ASTM ISO etc)
- Familiarity with the effects of radiation and plasma on the electrical performance of composite materials
Must-have Requirements:
- Extended activities such as typing standing and sitting
- Dedication to safety to mitigate hazards that may include heat cold noise fumes strong magnets lead (Pb) high voltage metallographic etchants and cryogenics
- Willingness to travel or work required nights/weekends/on-call occasionally
$90000 - $145000 a year
At CFS we excel in fast-paced environments driven by our values of integrity execution impact and self-critique. As we grow were eager to bring on mission-driven folks who offer diverse perspectives and fresh ways to tackle challenges.
We value diversity deeply and are proud to be an equal opportunity employer by choice. We consider all qualified applicants equally regardless of race color national origin ancestry citizenship status protected veteran status religion physical or mental disability marital status sex sexual orientation gender identity or expression age or any other basis protected by law.
This role requires compliance with U.S. laws concerning the export of controlled or protected technologies or information (collectively Export Control Laws). Any offer of employment will be contingent on the need for compliance with such Export Control Laws.
Required Experience:
IC
