Commonwealth Fusion Systems

Develops high-temperature superconducting fusion magnets

Treasury and Tax Analyst

TreasuryConfirmed live in the last 24 hours

Full-timeDevens, MA, USA$113k - $141k /yrHybrid

About the Job

Requirements

A bachelor's degree in Accounting, Finance, Economics, or a related field is required.
An active Certified Public Accountant (CPA) license is required.
At least five years of experience in treasury, accounting, tax, corporate finance, banking operations, audit, or another controlled environment is required.
Strong Excel and analytical skills are required.
Disciplined attention to detail, clear communication, and the ability to translate data into conclusions, coordinate inputs, manage deadlines, and handle sensitive information with sound judgment are required.
The role requires the ability to perform extended activities such as typing, standing, sitting, and walking.
Occasional nights, weekends, or on-call work may be required during payroll processing, month-end close, audit, compliance deadlines, system issues, or urgent operational escalations.
The role requires working in a facility containing industrial hazards, including heat, cold, noise, fumes, strong magnets, lead, high voltage, high current, pressure systems, and cryogenics.
Compliance with U.S. export control laws is required, and any employment offer is contingent on that compliance.

Responsibilities

Prepare cash, liquidity, investment, and banking analyses; maintain debt, letter-of-credit, financing, and counterparty trackers.
Support bank account administration, know-your-customer documentation, payment-control evidence, and bank or counterparty follow-up.
Support Carta and capitalization-table data, reconciliations, documentation, and employee or investor requests.
Prepare diligence packages, recurring compliance deliverables, obligation calendars, and supporting records with Accounting, Legal, FP&A, Investor Relations, and advisors.
Support the year-end tax provision, research and development credit, energy tax credits, tax calendars and data requests, and ARC/global-tax planning analyses.
Document procedures, maintain control evidence, reconcile data, identify gaps, and recommend practical improvements and backup coverage.
Plan assigned work, coordinate inputs, meet deadlines, and complete assigned workstreams end-to-end, escalating risks with a recommendation.
Provide concise status updates that state risks, recommendations, owners, timing, and specific asks.
Build productive working relationships across functions without relying on authority and handle sensitive information with sound judgment.

Desired Qualifications

Broad curiosity and interest in developing deeper expertise in treasury or tax.
Experience with an enterprise resource planning (ERP) system, Carta, or a treasury or banking platform, or experience at a high-growth company.

Salary Range: 113000 to 141000 (Currency: USD) (Pay period: per-year-salary)

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 a Treasury and Tax Analyst

Add execution capacity and bench strength within Corporate Finance. Under the Corporate Finance Manager’s direction, the Corporate Finance Analyst will own assigned analyses, trackers, reconciliations, documentation, and recurring deliverables across treasury, banking, financing, equity, investor support and compliance, and tax. The role is designed to reduce key-person risk, build disciplined and transferable processes, and develop a broad Corporate Finance foundation that can support future progression into a Treasury Manager or Tax Manager role as the organization grows. The Corporate Finance Manager remains accountable for strategy, priorities, stakeholder relationships, judgment, approvals, and overall quality. The Corporate Finance Analyst is accountable for accurate, timely execution and end-to-end follow-through on assigned workstreams, including coordinating inputs and escalating risks with a recommendation.

What you'll do:

Treasury and financing: Prepare cash, liquidity, investment, and banking analyses; maintain debt, letter-of-credit, financing, and counterparty trackers
Banking operations: Support account administration, KYC, documentation, payment-control evidence, and bank or counterparty follow-up
Equity administration: Support Carta and cap-table data, reconciliations, documentation, and employee or investor requests
Investor support and compliance: Prepare diligence packages, recurring compliance deliverables, obligation calendars, and supporting records with Accounting, Legal, FP&A, Investor Relations, and advisors
Tax workstreams: Support the year-end provision, R&D credit, energy tax credits, tax calendars and data requests, and ARC/global-tax planning analyses
Process and controls: Document procedures, maintain control evidence, reconcile data, identify gaps, and recommend practical improvements and backup coverage
Own assigned outcomes: Plan the work, coordinate inputs, meet deadlines, and close the loop rather than waiting for repeated follow-up
Communicate proactively: Provide concise status, risk, recommendation, owner, timing, and specific ask
Collaborate across functions: Build productive working relationships without relying on authority; handle sensitive information with sound judgment

What we’re looking for:

Bachelor’s degree in Accounting, Finance, Economics, or a related field
Active CPA required
5+ years experience in treasury, accounting, tax, corporate finance, banking operations, audit, or another controlled environment
Strong Excel and analytical skills; disciplined attention to detail; clear communication; ability to translate data into conclusions, coordinate inputs, manage deadlines, and handle sensitive information with sound judgment. Preferred: Broad curiosity and interest in developing deeper expertise in treasury or tax

Bonus points for:

Experience with ERP, Carta, treasury or banking platform, or high-growth company experience

Must-have Requirements:

Perform extended activities such as typing, standing, sitting, walking, etc.
Occasional nights/weekends/on-call may be required during payroll processing, month-end close, audit, compliance deadlines, system issues, or urgent operational escalations.
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.

About the Company

Commonwealth Fusion Systems

Develops high-temperature superconducting fusion magnets

Commonwealth Fusion Systems builds fusion energy systems that aim to provide clean, affordable power. It designs tokamaks using high-temperature superconducting magnets to make smaller, less expensive machines. Its flagship SPARC is intended to produce net energy, with ARC envisioned as the first commercial fusion power plant. The company collaborates with MIT and focuses on a data-driven, mission-focused path to scalable fusion energy for large energy users.

Company size: 1,001-5,000
Company stage: Grant
Total funding: $4B
Headquarters: Harvard, MA
Founded: 2018

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