Commonwealth Fusion Systems

Thermal Engineer Interview Experience - Cambridge, Massachusetts

January 18, 2020

Positive ExperienceNo Offer

Process

I applied online. The process took two weeks.

There was an initial phone interview to check if I had a relevant background and experience. Then they invited me for the onsite interview. The onsite interview took five hours, in which there was a one-hour presentation of mine and a Q&A with the panel. Then there were additional separate interviews with the hiring committee for three hours. At the end, there was a tour of the company and laboratory facilities.

Questions

"Why are you interested in this role?" I was requested to prepare a one-hour presentation, and they asked questions about my research experience and presentation. They asked some technical questions about thermal stresses and modeling in the solid.

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Interview Statistics

The following metrics were computed from 1 interview experience for the Commonwealth Fusion Systems Thermal Engineer role in Cambridge, Massachusetts.

Success Rate

0%

Pass Rate

Commonwealth Fusion Systems's interview process for their Thermal Engineer roles in Cambridge, Massachusetts is extremely selective, failing the vast majority of engineers.

Experience Rating

Positive100%

Neutral0%

Negative0%

Candidates reported having very good feelings for Commonwealth Fusion Systems's Thermal Engineer interview process in Cambridge, Massachusetts.

Commonwealth Fusion Systems Work Experiences

Fast, fun, be open to change

Engineer • Current Employee

Pros: -You have the resources you need to build your contribution. -You get to see results of your work quickly. -You have a real shot at making commercialized fusion energy a reality -You get to work with people from many different industries -Everybody cares deeply about the company goals

Cons: - Change happens often. While everyone has the same overarching goal, the strategies to get there are constantly evolving. - Whack-a-mole with the critical path. If you are on the critical path, you have infinite resources but also pressure from all sides.

Fast, fun, be open to change

Engineer • Current Employee

Pros: -You have the resources you need to build your contribution. -You get to see results of your work quickly. -You have a real shot at making commercialized fusion energy a reality -You get to work with people from many different industries -Everybody cares deeply about the company goals

Cons: - Change happens often. While everyone has the same overarching goal, the strategies to get there are constantly evolving. - Whack-a-mole with the critical path. If you are on the critical path, you have infinite resources but also pressure from all sides.

Great team and awesome project, but mission comes before people

Supplier Integration Manager • Current Employee

Pros: Commonwealth Fusion Systems is working towards an incredible mission and could very plausibly change the world for the better. It's an inspiring place to be, and you get to work on some amazing technical problems. The team is top-notch, and the incredibly talented people are also very pleasant to work with.

Cons: Commonwealth Fusion Systems has continuously made decisions to marginalize their employees for the sake of the mission. On the one hand, they have limited resources to do something very audacious, so I understand the temptation to increase hours, withhold raises (despite high inflation), and add more work to everyone's plate than could possibly get done. On the other hand, the senior leadership needs to realize their mission cannot be completed without their people, and they need to take steps to keep their employees happy or they will continue to lose talent.

Great team and awesome project, but mission comes before people

Supplier Integration Manager • Current Employee

Pros: Commonwealth Fusion Systems is working towards an incredible mission and could very plausibly change the world for the better. It's an inspiring place to be, and you get to work on some amazing technical problems. The team is top-notch, and the incredibly talented people are also very pleasant to work with.

Cons: Commonwealth Fusion Systems has continuously made decisions to marginalize their employees for the sake of the mission. On the one hand, they have limited resources to do something very audacious, so I understand the temptation to increase hours, withhold raises (despite high inflation), and add more work to everyone's plate than could possibly get done. On the other hand, the senior leadership needs to realize their mission cannot be completed without their people, and they need to take steps to keep their employees happy or they will continue to lose talent.

Challenging work, good culture, difficult timelines

Senior Engineer • Current Employee

Pros: CFS as an abundance of difficult, interesting problems that they are working on diligently. On top of that, CFS is a very mission-driven company which leads to excellent, motivated coworkers who are most interested in how to succeed as a company and work together, as opposed to drama or politics. I genuinely love working here and can't imagine a more engaging place to work.

Cons: Like every startup, there are issues. CFS has not planned for enough space (desks and parking can be a pain) and schedules are often unrealistic. These concerns are acknowledged by management but ultimately the pain is felt by those engineers and technicians doing the work. That said, if you have a good manager, they insulate you from a lot of that stuff.

Challenging work, good culture, difficult timelines

Senior Engineer • Current Employee

Pros: CFS as an abundance of difficult, interesting problems that they are working on diligently. On top of that, CFS is a very mission-driven company which leads to excellent, motivated coworkers who are most interested in how to succeed as a company and work together, as opposed to drama or politics. I genuinely love working here and can't imagine a more engaging place to work.

Cons: Like every startup, there are issues. CFS has not planned for enough space (desks and parking can be a pain) and schedules are often unrealistic. These concerns are acknowledged by management but ultimately the pain is felt by those engineers and technicians doing the work. That said, if you have a good manager, they insulate you from a lot of that stuff.

Fast, fun, be open to change

Engineer • Current Employee

Pros: -You have the resources you need to build your contribution. -You get to see results of your work quickly. -You have a real shot at making commercialized fusion energy a reality -You get to work with people from many different industries -Everybody cares deeply about the company goals

Cons: - Change happens often. While everyone has the same overarching goal, the strategies to get there are constantly evolving. - Whack-a-mole with the critical path. If you are on the critical path, you have infinite resources but also pressure from all sides.

5.0
Fast, fun, be open to change
Engineer • Current Employee
Devens, MA
March 12, 2025
Pros: -You have the resources you need to build your contribution. -You get to see results of your work quickly. -You have a real shot at making commercialized fusion energy a reality -You get to work with people from many different industries -Everybody cares deeply about the company goals
Cons: - Change happens often. While everyone has the same overarching goal, the strategies to get there are constantly evolving. - Whack-a-mole with the critical path. If you are on the critical path, you have infinite resources but also pressure from all sides.

Great team and awesome project, but mission comes before people

Supplier Integration Manager • Current Employee

Pros: Commonwealth Fusion Systems is working towards an incredible mission and could very plausibly change the world for the better. It's an inspiring place to be, and you get to work on some amazing technical problems. The team is top-notch, and the incredibly talented people are also very pleasant to work with.

Cons: Commonwealth Fusion Systems has continuously made decisions to marginalize their employees for the sake of the mission. On the one hand, they have limited resources to do something very audacious, so I understand the temptation to increase hours, withhold raises (despite high inflation), and add more work to everyone's plate than could possibly get done. On the other hand, the senior leadership needs to realize their mission cannot be completed without their people, and they need to take steps to keep their employees happy or they will continue to lose talent.

4.0
Great team and awesome project, but mission comes before people
Supplier Integration Manager • Current Employee
Devens, MA
June 5, 2023
Pros: Commonwealth Fusion Systems is working towards an incredible mission and could very plausibly change the world for the better. It's an inspiring place to be, and you get to work on some amazing technical problems. The team is top-notch, and the incredibly talented people are also very pleasant to work with.
Cons: Commonwealth Fusion Systems has continuously made decisions to marginalize their employees for the sake of the mission. On the one hand, they have limited resources to do something very audacious, so I understand the temptation to increase hours, withhold raises (despite high inflation), and add more work to everyone's plate than could possibly get done. On the other hand, the senior leadership needs to realize their mission cannot be completed without their people, and they need to take steps to keep their employees happy or they will continue to lose talent.

Challenging work, good culture, difficult timelines

Senior Engineer • Current Employee

Pros: CFS as an abundance of difficult, interesting problems that they are working on diligently. On top of that, CFS is a very mission-driven company which leads to excellent, motivated coworkers who are most interested in how to succeed as a company and work together, as opposed to drama or politics. I genuinely love working here and can't imagine a more engaging place to work.

Cons: Like every startup, there are issues. CFS has not planned for enough space (desks and parking can be a pain) and schedules are often unrealistic. These concerns are acknowledged by management but ultimately the pain is felt by those engineers and technicians doing the work. That said, if you have a good manager, they insulate you from a lot of that stuff.

4.0
Challenging work, good culture, difficult timelines
Senior Engineer • Current Employee
March 13, 2025
Pros: CFS as an abundance of difficult, interesting problems that they are working on diligently. On top of that, CFS is a very mission-driven company which leads to excellent, motivated coworkers who are most interested in how to succeed as a company and work together, as opposed to drama or politics. I genuinely love working here and can't imagine a more engaging place to work.
Cons: Like every startup, there are issues. CFS has not planned for enough space (desks and parking can be a pain) and schedules are often unrealistic. These concerns are acknowledged by management but ultimately the pain is felt by those engineers and technicians doing the work. That said, if you have a good manager, they insulate you from a lot of that stuff.

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