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Senior Finance Analyst, R&D


Job Location:

Devens, MA - USA

Yearly Salary: USD 110000 - 185000
Posted: 4 September 2026 (15 hours ago)
Application Deadline: 2 December 2026
Vacancies: 1 Vacancy

Job Summary

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 were designing and building commercially viable fusion power plants. And were working with policymakers suppliers and many others to build the energy industry of the future.
Were in the best position to make it happen. Since 2018 weve raised $4 billion of capital making us the largest and leading fusion company in the world.
Now were looking for more thinkers doers builders and makers to join us. People wholl bring new perspectives solve tough problems and thrive as part of a team.
If thats you and this role fits we want to hear from you.

Join the power movement as Senior Finance Analyst R&D

Were 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 youll 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 were looking for:
  • Bachelors 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
$110000 - $185000 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
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
#LI-Hybrid

At CFS we excel in fast-paced environments driven by our values of integrity execution impact and self-critique. As we grow were 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.

Required Experience:

Senior IC


About Company

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The fastest path to clean, limitless fusion energy.

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