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Assembly Test Implementation Engineer

About Commonwealth Fusion Systems: 

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Cfsenergy Source published Sep 20, 2026 Verified 7 hours ago
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EmploymentFull-time

Overview

About Commonwealth Fusion Systems: 

Full job description

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, we’re designing and building commercially viable fusion power plants. And we're working with policymakers, suppliers, and many others to build the energy industry of the future.

We’re in the best position to make it happen. Since 2018, we’ve raised $4 billion of capital, making us the largest and leading fusion company in the world.

Now we’re looking for more thinkers, doers, builders, and makers to join us. People who’ll bring new perspectives, solve tough problems, and thrive as part of a team.

If that’s you and this role fits, we want to hear from you.

Join the power movement as an Assembly Test Implementation Engineer This position is overall responsible for the preparation, execution and closure phases of all related SPARC Assembly test activities.

Transferrable knowledge / skillset to become adept / proficient in all defined specialized test methods from both an engineering and equipment operation perspective – specialized testing includes complexity or hazard introduction for design verification purposes (low voltage, high voltage, high stored energy, etc.)

Support planning functions by scouting field assets for test instruction or procedure planning

Review and approve test procedures / instructions to ensure understanding of scope and identify & mitigate potential risks within both the engineering and technician teams

Collaborate with the technician team to execute a pre-test walkdown of unit or device under test, sensor, adjacent components, subsystems, systems or infrastructure to assess correct scope and hazard recognition when warranted

Collaborate with the technician team to execute custom builds of test equipment / features & mock-up testing for training / derisking purposes (pre-functional testing)

Develop software proficiency with SPARC Assembly workflow management for all test activities

Provide engineering direction when preparatory or execution impedances are encountered via simple or complex troubleshooting - decide between procedural intent and non-intent changes in the field

Adhere to the highest standards of safety and ensure that activities taking place are being performed in strict accordance with CFS safety policies and applicable regulatory safety standards

Ensure that activities being performed in the field are conducted in accordance with CFS Standards, standards published by regulatory bodies (NFPA, ASME, ASTM, NET, OSHA, NIOSH, etc.) and Industry Best Practices

Reinforce test performance standards - pre-job briefs, procedural place keeping, procedural use and adherence, conservative bias, diligent monitoring of critical parameters, correct data capture, attention to detail, etc.

Validate preliminary test outcomes - PASS, FAIL, UNCERTAIN with clear and succinct rationale / communication to integrated stakeholders

Collaborate with technician team to ensure full demobilization in the field / proper stowage of all inventory items.

Formal Test Engineering approval for all required test reports - signature authority

Debrief the test engineering team on performance / procedure feedback to leverage lessons learned, prevent error recurrence and optimize flow for ease of technician execution when deemed prudent

Occasional accommodation of off-normal work hours to support critical test activities

BS in Engineering or related field

5 Years of equivalent engineering experience

Previous testing experience with hazardsPrevious electrical testing experience (high voltage)

High proficiency MS Office, Bluebeam or Acrobat, and 3D modeling programs

OSHA 10

NFPA 70E

Ability to occasionally lift up to 50 lbs

Perform activities such as typing, standing, stooping, climbing or sitting for extended periods of time

Required onsite 5 days/week when assembly operations with relevant tools are underway, with possible alternating first or second shift assignment

Work in a facility that contains industrial hazards including heat, cold, noise, fumes, strong magnets, lead (Pb), high voltage, high current, pressure systems, and cryogenics

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