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Senior Cost Accountant

Commonwealth Fusion Systems
Devens, MA Full Time
POSTED ON 11/23/2025
AVAILABLE BEFORE 1/21/2026
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 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 AccountantThe 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 overheadMonitor and analyze cost variances, including material, labor, and overhead variancesReview and adjust standard costs to reflect changes in manufacturing processes and market conditionsEnsure we accurately capture and apply costs to projects across the companyCost Analysis & Reporting:Analyze manufacturing costs and prepare detailed reports on cost performanceIdentify trends and variances in production costs and recommend corrective actionsProvide detailed cost analysis and insights to support decision-making for pricing, budgeting, and forecastingProvide cost-related data and analysis to support financial planningVariance Analysis:Conduct variance analysis on actual vs. standard costs, explaining reasons for differencesWork with production and operations teams to understand and mitigate cost variancesPrepare regular reports on cost variance, highlighting areas of concern and opportunities for cost reductionPrepare journal entries to allocate cost variancesInventory Management:Assist in monitoring and valuing inventory, ensuring accuracy in cost allocationConduct periodic inventory reconciliations and analyze inventory variancesSupport physical inventory counts and investigate discrepancies between physical counts and system recordsContinuous 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 costSupport 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 preferred7 years' experience as a cost accountant, cost analyst, or similar role, with a focus on data analysis and knowledge of cost accounting principles and practicesExperience with inventory in a manufacturing environmentAbility to keep organized and demonstrate flexibility in a fast-paced environmentExcellent analytical skills and strong attention to detailStrong Excel SkillsBonus points for: 2 years audit experience with Big 4 or similarMust-have Requirements: Perform extended activities such as stooping, climbing, typing, standing, sitting, etc.Willingness to travel or work required nights/weekends/on-call occasionallyWork in a facility that contains industrial hazards including heat, cold, noise, fumes, strong magnets, lead (Pb), high voltage, high current, pressure systems, and cryogenicsSalary 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#LI-HybridAt 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 : $90,700 - $112,900

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Job openings at Commonwealth Fusion Systems

Commonwealth Fusion Systems
Hired Organization Address Devens, MA Full Time
About Commonwealth Fusion Systems: Commonwealth Fusion Systems is on a mission to deliver the urgent transition to fusio...
Commonwealth Fusion Systems
Hired Organization Address Devens, MA Full Time
About Commonwealth Fusion Systems: Commonwealth Fusion Systems is on a mission to deliver the urgent transition to fusio...
Commonwealth Fusion Systems
Hired Organization Address Devens, MA Full Time
About Commonwealth Fusion Systems: Commonwealth Fusion Systems is on a mission to deliver the urgent transition to fusio...
Commonwealth Fusion Systems
Hired Organization Address Devens, MA Full Time
About Commonwealth Fusion Systems: Commonwealth Fusion Systems is on a mission to deliver the urgent transition to fusio...

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