This position is no longer accepting applications. The listing was closed on 10/27/2026. Browse open roles at Commonwealth Fusion Systems.

Senior Finance Analyst, R&D

at Commonwealth Fusion Systems

Location

Devens, MA

Compensation

$134k–$205k USD

Type

full time

Posted

1 months ago

Remote

Yes

Job description

About Commonwealth Fusion Systems: 

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 we're working with policymakers, suppliers, and many others to build the energy industry of the future.

We’re in the best position to make it happen. Since 2018, we’ve raised $4 billion of capital, making us the largest and leading 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 Senior Finance Analyst, R&D

We're looking for a Senior Financial Analyst to partner directly with our R&D and Technology Development teams, translating experimental roadmaps into budgets, tracking spend against milestones, and giving leaders the financial visibility they need to make good decisions under real technical uncertainty.

This is a business partner role supporting cutting edge science.  The ideal candidate will bring the ability to track project spend with a strong understanding of financial treatment along with a passion and curiosity about the underlying technology.

What you'll do:

Build annual budgets and periodic forecasts for R&D cost centers, tracking actual spending against plans

Forecast short term cash flows by adjusting amortization schedules and downpayments

Track actuals against budget at the project and program level, investigate variances, and flag risks early

Advise R&D leadership and budget owners on resource allocation, operating efficiencies, and investment risk to inform decision-making

Own program and project forecasts end-to-end, providing insights that enable continuous capital re-allocation with the leadership team

Investigate vendor commitments, payment status and ensure master data records for the team are appropriately maintained

Identify and track risks and opportunities

What we’re looking for:

Bachelor's degree in Finance, Accounting, Economics, or a related quantitative field

7 years of experience in FP&A, corporate finance, or program finance.

Strong financial modeling skills and advanced Excel; comfort building models from ambiguous or evolving inputs

Ability to communicate clearly with technical stakeholders and translate technical projects to financial data

Detail-oriented, organized, and comfortable working with incomplete information in a fast-moving environment

Bonus Points For:

Experience supporting a high-growth company

Must-have Requirements:

Perform activities such as typing, standing, or 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

#LI-Hybrid

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.

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

•  13 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

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