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Staff Fuel Cycle & Blanket Test Engineer
Job Location:
Job Location:
Devens, MA - USA
Monthly Salary:
Not provided by the employer
Monthly Salary:
Posted:
14 May 2026 (30+ days ago)
Posted:
Application Deadline:
11 August 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.
Join the power movement as Staff Fuel Cycle & Blanket Test Engineer
The Staff Fuel Cycle & Blanket Test Engineer will be a technical leader in the operation testingand maintenance of laboratory systems for fusion fuel cycle and molten salt technology development.
The responsibilities of this role will be primarily focused on building new capabilities in the day-to-dayoperations of the gas handling & molten salt test facilities and general test leadership for SPARC operations. Development of test plans commissioning procedures and integrating the completedsystems to bring to a fully operational state are key responsibilities of the position. Job assignmentsin support of facility commissioning & testing should be completed in a highly independent mannerwhile also providing test result summaries to the Tritium and Blanket program leads Director of FuelCycle & Blanket Technology & Test Manager for general awareness of system state(s). This positionwill directly contribute to or lead major system test campaigns while also working with the TestManager to support training & development of new operators in tritium handling systems operation ofbalance of plant & general lab equipment.
What youll do:
- Own infrastructure support commissioning activities and execution of test plans
- Build expertise within a growing team helping scale operations by contributing to training programs workflows and best practices
- Contribute to team leadership while working closely with the Tritium Program lead and Blanket Program lead to design commission and run test campaigns
- Operation & general upkeep of gas handling & molten salt facility systems & laboratory equipment
- Contribute to integrated system commissioning & build expertise in hazardous material facility operations at a technical level
- Own preventative maintenance on assigned lab equipment as needed & trend maintenance needs across the gas handling & molten salt testing facilities
- Contribute to revise & author operations procedures
- Document facility learnings & contribute to a culture of continuous improvement
What were looking for:
- MS in Engineering (chemical mechanical aerospace materials) physics chemistry or a related field with 10 years of experience
- Experience building and executing testing in an R&D setting
- Experience working collaboratively in a laboratory setting with techs and senior scientists
- Experience with rigorous data management
- Experience writing clear lab reports and similar documentation
- Generation of formal presentations & ability to succinctly summarize findings for a range of audiences
- Attention to detail safety and organization to execute tests with good controls
- Ability to work effectively in a multidisciplinary team of engineers scientists technical staff and others
- Ability to clearly express and critique ideas
- Excellent communication and organizational skills
- Independent problem solving ability &able to approach new problems with creativity
Bonus points for:
- 10 years work experience in a laboratory setting
- Experience working with high purity gases
- Glovebox operations & PPE use for hazardous material handling.
- Experience with analytical equipment and building high vacuum systems
- Confluence JIRA tools
- Ability to interpret P&ID layouts & HMI indications for plant status
Must-have Requirements:
- Ability to lift up to 50 lbs occasionally
- Operate chainfalls & rigging equipment for repair/maintenance operations for gas processing equipment
- Perform activities such as typing standing and sitting for extended periods of time
- Dedication to safety to mitigate industrial hazards that may include heat cold noise fumes strong magnets lead (Pb) high voltage and cryogenics
- Willingness to travel occasionally or do required nights/weekends/on-call
- Operations will eventually span multiple shifts - must be flexible on working hours during peak operations
$130000 - $200000 a year
Salary range for this full-time position equity benefits.The actual salary will depend on level location qualifications and experience. The range displayed on each job posting reflects new hire salaries for the position across all US locations. Benefits include:
Competitive compensation with equity
13 Company-wide Holidays
Flexible vacation days
10 sick days
Generous parental leave policy
Health dental and vision insurance
401(k) with employer matching
Professional growth opportunities
Team-building activities
#LI-Onsite
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:
Staff IC
