Sr. Accounting Manager

Fusion Energy Base; San Leandro (CA); On-site; USD 120,000 - 180,000; Full time

Benefits offered by this job

Relocation assistance

Medical, dental, and vision

Flexible time off

Paid parental leave

2 weeks PTO at year end

Job summary

Fuse is building an in-house accounting function and you will bring together multi-entity work, ensure reliable numbers, and craft scalable systems as we scale. This is a hands-on role with no initial direct reports.

We seek 6+ years of accounting experience, CPA or active pursuit, and a sharp eye for detail. You will own close cycles, coordinate external firms, manage AP/AR, treasury, tax, and internal controls in a fast-growing environment in San Leandro, CA.

Qualifications

• 6+ years of accounting experience including work in Big 4 public accounting and a high-growth startup.
• CPA, or actively working toward one.
• Meaningful exposure to the responsibilities listed.
• High attention to detail; we want to trust your numbers without re-checking them.
• Hands-on; you’ll be doing the work, not just reviewing it.

Responsibilities

• Monthly, quarterly, and annual financial reporting and close.
• Coordinate external accounting firms and maintain consistency across entities.
• AP and AR management including vendor payments, invoicing, and collections.
• Treasury and cash management; bank accounts and forecasting.
• Tax filings and registrations at multiple levels.
• R&D tax credit filings and supporting documentation.
• Audit preparation and execution as needed.
• Government contract accounting for Fuse Federal (DoD/DOE) including costs and reporting cadence.
• Internal controls and reconciliation policies sized to the startup.
• Ensure compliance with registrations, licenses, and inter-company agreements.

Skills

6+ years accounting

CPA or pursuing

Attention to detail

Big picture thinking

Process judgment

Hands-on

Education

CPA or pursuing

Job description

About

FuseWe are building one of the most potentially consequential companies of the century. Our mission is to accelerate the world's transition to fusion energy while safeguarding humankind. This is not a normal company. This is not a normal job. We are committed for the long term to win.

About the Role

You’ll build Fuse’s accounting function in‑house. Today, much of our accounting is supported externally across multiple entities. Your job is to bring the work together, make the numbers reliable, and build the right systems as Fuse scales. There is no team under you on day one. You’ll be hands‑on and close to the work, not just reviewing it.

What We Value

Obsess about the details — sloppy work costs us later, so do it right the first time.

Care — pick up the trash. Do things no one asks you to do. Go the extra mile because you care.

Act with urgency — every hour matters more than it feels like it does.

Be responsible for the outcome, not just the task; if it is not working, it remains your problem until it is fixed.

Assume good intent — disagree openly, then commit fully once a call is made.

Core Responsibilities

• Monthly, quarterly, and annual financial reporting and close.
• Manage and coordinate our external accounting firms and keep the books consistent across all entities and subsidiaries.
• AP and AR — vendor payments, customer invoicing, collections, expense reports.
• Treasury and cash management — bank accounts, cash positioning across entities, reconciliations, short‑term forecasting.
• Federal, state, and local tax filings and registrations as we expand into new jurisdictions.
• R&D tax credit filings and supporting documentation.
• Audit prep and execution, as needed.
• Government contract accounting for Fuse Federal — DoD and DOE work, including the cost accounting standards, allowability rules, and reporting cadence that come with it.
• Internal controls — approval thresholds, segregation of duties, reconciliation policies — sized to where we are, without prematurely bureaucratizing a startup.
• Compliance — state registrations, business licenses, inter‑company agreements.
• Build systems and processes at the right time — not too early, not too late.

Minimum Qualifications

• 6+ years of accounting experience, including time in Big 4 public accounting and a high‑growth startup.
• CPA, or actively working toward one.
• Meaningful exposure across the responsibilities above — you don't need to have led every one.
• High attention to detail; we want to trust your numbers without re‑checking them.
• Ability to keep the bigger picture in view when priorities shift and not everything can be perfect at once.
• Strong judgment on what to systematize now versus what can stay scrappy.
• Hands‑on — no team under you on day one, so you’ll be doing the work, not just reviewing it.

Preferred Qualifications

• Accounting experience at a hardware, deep tech, or other capex‑heavy company.
• Experience at a fast‑growing startup.
• Government or defense contract accounting experience (DCAA, FAR, CAS), particularly relevant for Fuse Federal.

Additional Requirements

• This is not a remote position and will require relocation if not already local to Fuse's San Leandro, CA facility.
• Position occasionally requires the ability to work extended hours and weekends when needed.
• Position may require some business travel to other Fuse facilities.

Benefits

• Medical, dental, and vision coverage.
• Relocation assistance for roles that require it.
• Flexible time off. Take what you need, no accrual tracking.
• 2 weeks of paid time off built into the end of each year (subject to team and business needs).
• Supportive leave of absence policies.
• Paid leave for new parents.

ITAR Requirements

To conform to U.S. Government technology export regulations, including the International Traffic in Arms Regulations (ITAR), you must be a U.S. citizen, lawful permanent resident of the U.S., protected individual as defined by 8 U.S.C. 1324b(a)(3), or eligible to obtain the required authorizations from the U.S. Department of State.

Equal Opportunity

Fuse is an Equal Opportunity Employer; employment with Fuse is governed on the basis of merit, competence, and qualifications and will not be influenced by race, color, religion, gender, national origin/ethnicity, veteran status, disability status, age, ancestry, immigration status, sexual orientation, gender identity, marital status, mental or physical disability, or any other legally protected status.