Cfsenergy
Devens, MA
Full-Time
<48 Hours
USD 110,000 – USD 185,000

Cfsenergy VERIFIED EMPLOYER

Senior Test Planning Engineer - Assembly.

Hardware & Semiconductor Engineering Full-Time

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Senior Test Planning Engineer - Assembly: our view in 3 lines...

The Role:This role is for a senior engineer who plans and approves test products for assembly work on fusion energy systems.
The Person:The person will plan and draft test campaigns, plans, instructions and procedures, manage test risk and safety, troubleshoot test anomalies, and improve test flow using lessons learned.
Requirements:The ideal candidate has a BS in Engineering or related field, 7 years of equivalent engineering experience, previous testing experience with hazards, previous electrical testing experience, and high proficiency with MS Office, Bluebeam or Acrobat, and 3D modeling programs.

About the role

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 a Senior Test Planning Engineer - Assembly

This position is overall responsible for planning, drafting and achieving necessary approval of SPARC Assembly Test Products (test campaigns, plans, instructions, procedures) to accelerate project milestones.

What you'll do:

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.)

Capability to mobilize entire test methods based on innovative technologies

Proficient at technical procedure writing – format clean & concise templates for iteration and version control

Adept at project risk analysis to establish trade-offs for test schedule gains without compromising safety and quality

Diligence (attention to detail) – thorough analysis of preliminary and final design reviews to identify opportunities / develop strategies for risk buy down via test methods

Exemplifies correct behaviors to establish a safety-conscience work environment & self-improving culture / learning organization – evident in test product development

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

Incorporate test performance and safety standards into test products - pre-job briefs, procedural place keeping, procedural use and adherence, conservative bias, diligent monitoring of critical parameters, correct data capture, etc.

Process and action team feedback following test execution to leverage lessons learned, prevent error recurrence and optimize flow for ease of technician execution when deemed prudent

Lead complex troubleshooting actions plans and casual evaluations as a result of test anomalies

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

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

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

What we’re looking for:

BS in Engineering or related field

7 Years of equivalent engineering experience

Previous testing experience with hazards

Previous electrical testing experience (high voltage)

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

Bonus points for:

OSHA 10
NFPA 70E

Must-have Requirements:

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

#LI-Onsite

At CFS, we excel in fast-paced environments, driven by our values of integrity, execution, impact, and self-critique. As we grow, we’re 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.

Published September 21, 2026

Location Devens, United Kingdom

Category Hardware & Semiconductor Engineering

Job Type Full-Time

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