Process
It was a lengthy interview process. There were a few quick questions with recruitment and HR, then a call scheduled with the hiring manager, and then the rest of the team. I didn't make it past this round, but I was told there were even more steps to take were I to proceed. The process was not too bad, though a lot of preparation is required.
Questions
All questions were technical and related to the job description.
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Interview Statistics
The following metrics were computed from 6 interview experiences for the Commonwealth Fusion Systems Engineer role.
Success Rate
0%
Pass Rate
Commonwealth Fusion Systems's interview process for their Engineer roles is extremely selective, failing the vast majority of engineers.
Experience Rating
Positive33%
Neutral33%
Negative33%
Candidates reported having mixed feelings for Commonwealth Fusion Systems's Engineer interview process.
Commonwealth Fusion Systems Work Experiences
2.0
MEH!
Engineer • Former Employee
October 31, 2022
Pros: If you are looking for a pie in the sky technology this is the place.
If you are looking to contribute this is the place since many times folks do not know what they are doing.
Cons: Incredibly poor coordination. The place it run by scientists that do not know how to keep schedules or get things done in budget and on time. These folks spend too much time and effort with warm and fuzzies (inclusiveness, gay pride, what pronoun to use...) and too little time on hardcore engineering.
4.0
Great for now...
Engineer • Current Employee
Boston, MA
July 13, 2026
Pros: Lots of really cool tech. I can not imagine working anywhere as cool and potentially impactful. 16 weeks parental leave. Great IT department. Good but degrading culture.
Cons: Aggressive deadlines and schedules that sometimes don't feel real (then again sometimes we actually make progress faster than you would think possible).
The pay is middle of the road at best.
2.0
A bit of a mess
Engineer • Former Employee
Milpitas, CA
October 9, 2026
Pros: The technical team at Milpitas is great and are highly motivated. Compensation is ok. Work life balance is pretty good.
Cons: “Unlimited” PTO is a joke here. Upper management does not believe the team deserves PTO and has capped it to a non-industry-standard amount. Upper/middle management in general tends to get in the way of progress and iteration due to their lack of technical competency and trust.
The most corporate and bureaucratic environment I’ve ever experienced, and I’ve worked at multiple Fortune 500 companies.
- 2.0MEH!Engineer • Former EmployeeOctober 31, 2022Pros: If you are looking for a pie in the sky technology this is the place. If you are looking to contribute this is the place since many times folks do not know what they are doing.Cons: Incredibly poor coordination. The place it run by scientists that do not know how to keep schedules or get things done in budget and on time. These folks spend too much time and effort with warm and fuzzies (inclusiveness, gay pride, what pronoun to use...) and too little time on hardcore engineering.
- 4.0Great for now...Engineer • Current EmployeeBoston, MAJuly 13, 2026Pros: Lots of really cool tech. I can not imagine working anywhere as cool and potentially impactful. 16 weeks parental leave. Great IT department. Good but degrading culture.Cons: Aggressive deadlines and schedules that sometimes don't feel real (then again sometimes we actually make progress faster than you would think possible). The pay is middle of the road at best.
- 2.0A bit of a messEngineer • Former EmployeeMilpitas, CAOctober 9, 2026Pros: The technical team at Milpitas is great and are highly motivated. Compensation is ok. Work life balance is pretty good.Cons: “Unlimited” PTO is a joke here. Upper management does not believe the team deserves PTO and has capped it to a non-industry-standard amount. Upper/middle management in general tends to get in the way of progress and iteration due to their lack of technical competency and trust. The most corporate and bureaucratic environment I’ve ever experienced, and I’ve worked at multiple Fortune 500 companies.
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