Senior Cost Accountant
Commonwealth Fusion Systems (CFS)
Company Overview
Commonwealth Fusion Systems
Cambridge, MA, United States
2018
Business Model
Energy
Commonwealth Fusion Systems focuses on developing advanced fusion energy technology. Their core activities include research and development of superconducting magnets and fusion reactors aimed at providing a clean and virtually limitless energy source.
Their revenue streams primarily come from government grants, private investments, and partnerships with various organizations in the energy sector.
Locations & Geography
Commonwealth Fusion Systems operates primarily in the United States, with a significant presence in Cambridge, MA. They are also involved in international collaborations, expanding their influence in the global energy landscape.
Company Culture
Their mission is to accelerate the development of fusion energy to provide a sustainable and clean energy future. They value innovation, collaboration, and a commitment to scientific excellence.
Commonwealth Fusion Systems fosters a dynamic and inclusive work environment that encourages creativity and teamwork. Employees are motivated to push the boundaries of science and technology in a supportive atmosphere.
They emphasize continuous learning and professional growth, offering various training programs and opportunities for employees to advance their skills in the field of fusion energy.
Activities & Projects
Commonwealth Fusion Systems is currently working on the SPARC project, which aims to demonstrate net-positive energy from a fusion reactor. This project is a significant step towards commercial fusion energy.
They are pioneering the use of high-temperature superconductors in fusion technology, which enhances the efficiency and feasibility of fusion reactors. This innovation is crucial for making fusion energy a reality.
Their sustainability practices focus on developing clean energy solutions that minimize environmental impact. By harnessing fusion energy, they aim to provide a sustainable alternative to fossil fuels.
Career Opportunities
Commonwealth Fusion Systems typically has openings for roles in engineering, research, and project management. They seek individuals passionate about advancing fusion technology and contributing to a sustainable energy future.
They offer competitive salaries, comprehensive health benefits, and opportunities for professional development. Employees also enjoy a collaborative work culture that values innovation and creativity.
Contact Information
Last updated on 2025-03-27 | Report an issue
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 Senior Cost Accountant
The Senior Cost Accountant will support key Accounting and Inventory controls across the organization while being a contributing member of the team handling standard cost management, variance analysis, and inventory valuations. This team member will work closely across multiple departments at CFS and must be a goal oriented team player who displays a strong intuition on how to tackle novel costing challenges.
What you'll do
- Standard Cost Management
- Develop, maintain, and update standard costs for raw materials, labor, and overhead
- Monitor and analyze cost variances, including material, labor, and overhead variances
- Review and adjust standard costs to reflect changes in manufacturing processes and market conditions
- Ensure we accurately capture and apply costs to projects across the company
- Cost Analysis & Reporting
- Analyze manufacturing costs and prepare detailed reports on cost performance
- Identify trends and variances in production costs and recommend corrective actions
- Provide detailed cost analysis and insights to support decision-making for pricing, budgeting, and forecasting
- Provide cost-related data and analysis to support financial planning
- Variance Analysis
- Conduct variance analysis on actual vs. standard costs, explaining reasons for differences
- Work with production and operations teams to understand and mitigate cost variances
- Prepare regular reports on cost variance, highlighting areas of concern and opportunities for cost reduction
- Prepare journal entries to allocate cost variances
- Inventory Management
- Assist in monitoring and valuing inventory, ensuring accuracy in cost allocation
- Conduct periodic inventory reconciliations and analyze inventory variances
- Support physical inventory counts and investigate discrepancies between physical counts and system records
- Continuous Improvement
- Collaborate with cross-functional teams to assess processes, their inputs, outputs, quality and other factors, in order identify and implement improvements to process quality, accuracy and cost
- Support the development and implementation of process improvements related to cost accounting and reporting, as well as other accounting processes, including purchase order accuracy and completeness, credit memo application, parent-child effectiveness, etc.
What we're looking for
- Bachelor's degree in accounting, finance or business administration preferred
- 7+ years' experience as a cost accountant, cost analyst, or similar role, with a focus on data analysis and knowledge of cost accounting principles and practices
- Experience with inventory in a manufacturing environment
- Ability to keep organized and demonstrate flexibility in a fast-paced environment
- Excellent analytical skills and strong attention to detail
- Strong Excel Skills
Bonus points for
- 2+ years audit experience with Big 4 or similar
Must-have Requirements
- Perform extended activities such as stooping, climbing, typing, standing, sitting, etc.
- 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
$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
November 25, 2025
Full Time
Company
November 25, 2025
Hybrid
USD 110k–185k yearly
Commonwealth Fusion Systems (CFS)
- Devens, Massachusetts, United States
7+ years
UTC-05:00
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