Commonwealth Fusion Systems

Mechanical Engineer Interview Experience

May 18, 2024

Neutral ExperienceNo Offer

Process

I applied online.

The phone call with the recruiter went well. The interview itself was a technical interview, which caught me off guard. The interviewer was unimpressed that I didn't have various equations memorized. Things did not proceed past this interview.

Questions

What equation would you use to calculate fluid flow through a pipe?

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Interview Statistics

The following metrics were computed from 6 interview experiences for the Commonwealth Fusion Systems Mechanical Engineer role.

Success Rate

17%

Pass Rate

Commonwealth Fusion Systems's interview process for their Mechanical Engineer roles is very selective, failing most engineers who go through it.

Experience Rating

Positive50%

Neutral33%

Negative17%

Candidates reported having very good feelings for Commonwealth Fusion Systems's Mechanical Engineer interview process.

Commonwealth Fusion Systems Work Experiences

Amazing place to work

Mechanical Engineer • Current Employee

November 26, 2021

Pros: Lots of opportunity for learning and working on varied projects, good/fair compensation, friendly and hardworking coworkers, managers and company looking out for employees' best interests.

Cons: Very few cons. If this can even be called a con: An important project and lean team comes with a lot of responsibility and work. Be ready to work hard and balance multiple projects. Not the most diverse workplace but the company is actively working to improve this. Note that fusion is historically not a very diverse field

Amazing place to work

Mechanical Engineer • Current Employee

November 26, 2021

Pros: Lots of opportunity for learning and working on varied projects, good/fair compensation, friendly and hardworking coworkers, managers and company looking out for employees' best interests.

Cons: Very few cons. If this can even be called a con: An important project and lean team comes with a lot of responsibility and work. Be ready to work hard and balance multiple projects. Not the most diverse workplace but the company is actively working to improve this. Note that fusion is historically not a very diverse field

Brilliant colleagues, engaging work

Mechanical Engineer • Current Employee

November 21, 2022

Pros: Combination of impactful and challenging work means it's easy to find the motivation to work very hard. Never have I worked with so many people who truly care about their work and want to see the company succeed.

Cons: Going above and beyond is the norm, so long hours are natural.

Brilliant colleagues, engaging work

Mechanical Engineer • Current Employee

November 21, 2022

Pros: Combination of impactful and challenging work means it's easy to find the motivation to work very hard. Never have I worked with so many people who truly care about their work and want to see the company succeed.

Cons: Going above and beyond is the norm, so long hours are natural.

CFS - Groundbreaking technologies, experiencing hypergrowth

Mechanical Engineer • Former Employee

January 6, 2025

Pros: The technologies being developed are novel, groundbreaking, and potentially will alter the energy landscape.

Cons: As a result of growing extremely fast within the last couple years, they lost some of the intentionality around their culture and have a tough task to regain that control.

CFS - Groundbreaking technologies, experiencing hypergrowth

Mechanical Engineer • Former Employee

January 6, 2025

Pros: The technologies being developed are novel, groundbreaking, and potentially will alter the energy landscape.

Cons: As a result of growing extremely fast within the last couple years, they lost some of the intentionality around their culture and have a tough task to regain that control.

Amazing place to work

Mechanical Engineer • Current Employee

November 26, 2021

Pros: Lots of opportunity for learning and working on varied projects, good/fair compensation, friendly and hardworking coworkers, managers and company looking out for employees' best interests.

Cons: Very few cons. If this can even be called a con: An important project and lean team comes with a lot of responsibility and work. Be ready to work hard and balance multiple projects. Not the most diverse workplace but the company is actively working to improve this. Note that fusion is historically not a very diverse field

5.0
Amazing place to work
Mechanical Engineer • Current Employee
Cambridge, MA
November 26, 2021
Pros: Lots of opportunity for learning and working on varied projects, good/fair compensation, friendly and hardworking coworkers, managers and company looking out for employees' best interests.
Cons: Very few cons. If this can even be called a con: An important project and lean team comes with a lot of responsibility and work. Be ready to work hard and balance multiple projects. Not the most diverse workplace but the company is actively working to improve this. Note that fusion is historically not a very diverse field

Brilliant colleagues, engaging work

Mechanical Engineer • Current Employee

November 21, 2022

Pros: Combination of impactful and challenging work means it's easy to find the motivation to work very hard. Never have I worked with so many people who truly care about their work and want to see the company succeed.

Cons: Going above and beyond is the norm, so long hours are natural.

5.0
Brilliant colleagues, engaging work
Mechanical Engineer • Current Employee
November 21, 2022
Pros: Combination of impactful and challenging work means it's easy to find the motivation to work very hard. Never have I worked with so many people who truly care about their work and want to see the company succeed.
Cons: Going above and beyond is the norm, so long hours are natural.

CFS - Groundbreaking technologies, experiencing hypergrowth

Mechanical Engineer • Former Employee

January 6, 2025

Pros: The technologies being developed are novel, groundbreaking, and potentially will alter the energy landscape.

Cons: As a result of growing extremely fast within the last couple years, they lost some of the intentionality around their culture and have a tough task to regain that control.

4.0
CFS - Groundbreaking technologies, experiencing hypergrowth
Mechanical Engineer • Former Employee
Somerville, MA
January 6, 2025
Pros: The technologies being developed are novel, groundbreaking, and potentially will alter the energy landscape.
Cons: As a result of growing extremely fast within the last couple years, they lost some of the intentionality around their culture and have a tough task to regain that control.

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