Senior Financial Analyst
Commonwealth Fusion Systems
Company Overview
Commonwealth Fusion Systems (CFS)
Cambridge, MA, United States
2018
Approximately 430 employees (source: zoominfo.com). Revenue figures vary, with reports indicating $211.3 million or $31.7 million, though as a pre-revenue fusion developer focused on R&D, these may reflect funding or operations rather than sales.
What They Do
Commonwealth Fusion Systems (CFS) is a pioneering private fusion energy company that specializes in tokamak-based magnetic confinement fusion. Founded as a spinout from MIT's Plasma Science and Fusion Center, CFS focuses on utilizing high-temperature superconducting magnets to achieve commercial net energy production (source: cfs.energy). The company has made significant strides in its technology, particularly with the development of compact fusion machines that leverage decades of tokamak science. Their flagship projects, SPARC and ARC, aim to demonstrate net energy gain and commercial viability in the coming years (source: cfs.energy).
Projects & Track Record
CFS is currently engaged in several groundbreaking projects, most notably the construction of SPARC, which is set to be the world's first net-energy fusion machine. Located at their Fusion Energy Campus in Devens, Massachusetts, SPARC aims to demonstrate net energy gain by the late 2020s (source: cfs.energy). Additionally, CFS is planning the ARC project, a 400 MW-class grid-scale tokamak power plant designed for commercial deployment in the early 2030s. These projects are underpinned by significant technological advancements, including the successful testing of the central solenoid magnet module (CSMC) in November 2024, which confirmed the manufacturability of critical components for SPARC (source: zoominfo.com).
Recent Developments
In the past two years, CFS has made remarkable progress, including the opening of its Devens Fusion Energy Campus on February 10, 2023, which was attended by notable figures such as U.S. Secretary of Energy Jennifer Granholm (source: cfs.energy). The company has also secured substantial funding, raising $863 million in August 2024, building on a previous $1.8 billion round in May 2023, bringing total funding to over $2 billion (source: wbjournal.com). Furthermore, CFS announced its first commercial power plant site in Chesterfield County, Virginia, which will be independently financed and operated, with plans for grid connection in the early 2030s (source: zoominfo.com).
Working There
CFS offers a range of roles across various disciplines, including fusion science, engineering, manufacturing, and materials science. The majority of their workforce is based at the Devens campus, which has grown to over 430 employees (source: cfs.energy). The company culture emphasizes rapid execution and transparency, attracting top talent from the fusion and manufacturing sectors. Key executives include Co-Founder and CEO Bob Mumgaard, along with other leaders in operations and science, indicating a strong demand for expertise in tough tech and physics (source: nasdaqprivatemarket.com). While specific benefits are not detailed, the scale-up and investor backing suggest competitive packages for high-caliber roles in a mission-driven environment (source: cfs.energy). Job seekers are encouraged to monitor their careers page for openings related to SPARC and ARC advancements.
Contact
Last updated on 2026-01-02 | Report an issue
Job Description
Commonwealth Fusion Systems is on a mission to deliver the urgent transition to fusion energy.
Combining decades of research, top talent, and new technologies, we're designing and building commercially viable fusion power plants. And working with policymakers and suppliers to build the energy industry of the future.
We're in the best position to make it happen. Since 2018, we've raised nearly $3 billion in capital, making us the largest and leading private fusion company in the world.
Now we're looking for more thinkers, doers, builders, and makers to join us. People who'll bring new perspectives, solve tough problems, and thrive as part of a team.
If that's you and this role fits, we want to hear from you.
Join the power movement as a Financial Analyst
The FP&A function acts as the operating financial arm of the company. We ensure that each team has timely and accurate information on budgets, resourcing and actual results. We help leaders make informed decisions and operate with cost efficiency and continuous improvement in mind. We help set the long-term financial strategy for the company, including developing CFS's understanding of our products' unit economics.
This role will be an integral part of the FP&A team, supporting various functions and collaborating closely with internal stakeholders. In addition to the primary responsibilities outlined below, this role will also work with teams across the organization to ensure accurate budget mapping, data integrity, and process improvement. A successful candidate will engage with budget leaders to monitor purchase orders, analyze budget variances, and contribute to the financial reporting process.
What you'll do
- Financial forecasting & reporting
- Track and report on factory financial performance to business managers
- Data cleanliness
- Develop and maintain processes to improve data accuracy and help our factory transition from R&D into a manufacturing environment
- Cost Modeling
- Advance the factory cost model by applying operational insights to deliver detailed analyses of COGS and the full P&L cost model
- ERP Requirements Development
- Develop finance requirements to improve ERP tracking of factory costs
- Ad-Hoc Reporting
What we're looking for
- Bachelor's degree in Business, Finance, Accounting, Economics, or STEM fields
- Strong understanding of budget development, forecasting, and reporting of financial analysis to support operational decision-making
- Strong understanding of company long-term financial planning, including revenue, cost, investment, cashflow analysis and valuation
- Strong understanding of GAAP and 3 statement financials
- 2-5 years of experience working at a fast growing technology company or other dynamic business with development cycles and change akin to that of a growth company
- Strong Excel and SQL experience
- Understanding of Enterprise Applications (e.g., ERP, MES, etc) and basic underlying data architecture
- High energy and engagement, with flexibility to complete work during periodic very busy times
- Excellent verbal and written communication & data presentation skills, including the ability to effectively communicate with both business and technical teams
- Collaborative work style
Bonus points for
- Eagerness to understand business problem sets unique to manufacturing and R&D environments
- Technical mindset and strong organizational skills
- Familiarity with Python or similar programming languages
- Track record of collaborating with other teams on building and sharing analytic tools
- Ability to perform activities such as typing and sitting for extended periods of time
- Willingness to travel or work required nights/weekends/on-call occasionally
- Work in a facility that contains industrial hazards including heat, cold, noise, fumes, strong magnets, lead (Pb), high voltage, high current, pressure systems, and cryogenics
- Desire to learn on the job and take on complex problems
Must-have requirements
- Ability to perform activities such as typing and sitting for extended periods of time
- Willingness to do occasional travel
- Work in a facility that contains industrial hazards including heat, cold, noise, fumes, strong magnets, lead (Pb), high voltage, high current, pressure systems, and cryogenics
$110,000 - $185,000 a year
Salary range for this full-time position + equity + benefits. The actual salary will depend on level, location, qualifications, and experience. The range displayed on each job posting reflects new hire salaries for the position across all US locations. Benefits include:
- Competitive compensation with equity
- 12.5 Company-wide Holidays
- Flexible vacation days
- 10 sick days
- Generous parental leave policy
- Health, dental, and vision insurance
- 401(k) with employer matching
- Professional growth opportunities
- Team-building activities
At CFS, we excel in fast-paced environments, driven by our values of integrity, execution, impact, and self-critique. As we grow, we're eager to bring on mission-driven folks who offer diverse perspectives and fresh ways to tackle challenges.
We value diversity deeply and are proud to be an equal opportunity employer by choice. We consider all qualified applicants equally, regardless of race, color, national origin, ancestry, citizenship status, protected veteran status, religion, physical or mental disability, marital status, sex, sexual orientation, gender identity or expression, age, or any other basis protected by law.
This role requires compliance with U.S. laws concerning the export of controlled or protected technologies or information (collectively, "Export Control Laws"). Any offer of employment will be contingent on the need for compliance with such Export Control Laws.
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About the role
January 6, 2026
Full Time
Company
January 6, 2026
On-site
USD 110k–185k yearly
- Milpitas, United States
2-5 years
UTC-08:00
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