Senior Corporate Finance Analyst — Treasury & Tax (Hybrid)

Commonwealth Fusion Systems LLC; Harvard (MA); Hybrid; USD 113,000 - 141,000; Full time

Benefits offered by this job

Health insurance

401(k) with employer matching

13 Company-wide Holidays

Flexible vacation days

Sick days

Parental leave policy

Professional growth opportunities

Team-building activities

Job summary

Commonwealth Fusion Systems LLC is seeking a Corporate Finance Analyst to strengthen treasury, accounting, tax, and investor support. You will own analyses, trackers, reconciliations, and recurring deliverables across treasury, banking, equity, compliance, and tax, under the Corporate Finance Manager.

This role reduces key-person risk and builds transferable processes. You will coordinate inputs, maintain control evidence, and partner with Accounting, Legal, FP&A, Investor Relations, and

Qualifications

• Bachelor’s degree in Accounting, Finance, Economics, or a related field.
• Active CPA required.
• 5+ years experience in treasury, accounting, tax, or corporate finance.
• Strong Excel and analytical skills; disciplined attention to detail; clear communication.

Responsibilities

• Prepare cash, liquidity, investment analyses; maintain trackers and banking data.
• Support banking operations: KYC, documentation, payment-control evidence.
• Support Carta and cap-table data reconciliations and requests.
• Prepare diligence packages and recurring compliance deliverables.
• Assist tax workstreams: year-end provision, R&D credit, tax calendars.
• Document procedures; identify gaps and recommend improvements.
• Coordinate inputs; meet deadlines and escalate risks with recommendations.

Skills

Advanced Excel

Financial analysis

Attention to detail

Clear communication

Data interpretation

Education

Bachelor's degree in Accounting/Finance/Economics

CPA certification

Tools

Carta

ERP systems

Treasury platforms

Job description

Commonwealth Fusion Systems LLC is seeking a Corporate Finance Analyst to strengthen treasury, accounting, tax, and investor support. You will own analyses, trackers, reconciliations, and recurring deliverables across treasury, banking, equity, compliance, and tax, under the Corporate Finance Manager.

This role reduces key-person risk and builds transferable processes. You will coordinate inputs, maintain control evidence, and partner with Accounting, Legal, FP&A, Investor Relations, and