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Commonwealth Fusion Systems

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Commonwealth Fusion Systems Reviews

4.0

71% would recommend to a friend

(83 total reviews)

72% positive business outlook

Commonwealth Fusion Systems has an employee rating of 4.0 out of 5 stars, based on 83 company reviews on Glassdoor which indicates that most employees have a good working experience there.

Reviews by job title

83 reviews
5.0
28 Apr 2026
Recommend
CEO approval
Business outlook

Pros

Really good group of people working on some very challenging problems. I high level of humility considering the pedigree of the talent, very low-ego environment. Great opportunity to make an impact and get a start in an emerging industry with tremendous growth potential. The company is well led and has successfully raised capital to support the work. I've learned more here in the past few years than anywhere in my career.

Cons

It's not easy. The work is hard. There is always more to learn. It takes being comfortable with not knowing things and often not having time to do everything to the level you might like.

5.0
3 July 2025
Recommend
CEO approval
Business outlook

Pros

Working at Commonwealth Fusion Systems has been one of the most exciting and fulfilling experiences of my career. It has been incredible to work to help prove / commercialize a new clean energy technology alongside some of the brightest minds in the world. The work is not only technically challenging but also deeply meaningful and everyone is driven by the same ambitious goal. What sets CFS apart is the culture of collaboration and innovation. The team is diverse, passionate, and intellectually curious, and there’s a strong sense of shared purpose that drives everything we do. Every day brings new learning opportunities, whether it’s through hands-on work with cutting-edge systems or cross-functional collaboration with experts from a wide range of disciplines. Pros: Extremely exciting and impactful work Brilliant, diverse, and mission-driven colleagues Opportunities to learn and grow in a fast-paced environment Exposure to revolutionary technologies and real-world problem-solving A strong sense of purpose and alignment across the company

Cons

Cons: Some internal processes and structures are still evolving, which can occasionally lead to ambiguity or inefficiencies. However, this is understandable given the company’s rapid growth and ambitious goals.

Viewing 1 - 3 of 83 Reviews

Glassdoor has 101 Commonwealth Fusion Systems reviews submitted anonymously by Commonwealth Fusion Systems employees. Read employee reviews and ratings on Glassdoor to decide if Commonwealth Fusion Systems is right for you.