Senior Mechanical Engineer Interview Experience - Devens, Massachusetts
Process
I applied online. The process took two months.
Interviews were relatively easy, partially because I could only get past recruiters for basic roles. I felt like they had a hard time matching skilled candidates to skilled roles. I was bounced around several times where recruiters would send me to entry-level roles, then conversations with hiring managers would reveal that I was really better suited for a more challenging role. I was unable to find a group that was hiring for both, and each group does their own interviews. After getting bounced back and forth several times, I gave up and found other work.
Questions
How would you design a bracket to bolt a pipe to a wall? How do you work with physicists who don't understand engineering?
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Interview Statistics
The following metrics were computed from 1 interview experience for the Commonwealth Fusion Systems Senior Mechanical Engineer role in Devens, Massachusetts.
Success Rate
Commonwealth Fusion Systems's interview process for their Senior Mechanical Engineer roles in Devens, Massachusetts is extremely selective, failing the vast majority of engineers.
Experience Rating
Candidates reported having mixed feelings for Commonwealth Fusion Systems's Senior Mechanical Engineer interview process in Devens, Massachusetts.
Commonwealth Fusion Systems Work Experiences
- 3.0MehSenior Mechanical Engineer • Current EmployeeDevens, MANovember 9, 2025Pros: The role offers good pay and an interesting project.Cons: Long hours, managers don’t know how long things takes
- 5.0Supportive team with high pressure and tight deadlinesStaff Engineer • Current EmployeeDevens, MAMay 8, 2026Pros: Great place to work, low ego, highly motivated colleagues who are mission driven and want to make things workCons: High pressure, short timelines, pay could be better. Not a normal 9-5
- 4.0Challenging work, good culture, difficult timelinesSenior Engineer • Current EmployeeMarch 13, 2025Pros: 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.
