Controller, Accounting, Financial Reporting

Overview

General Matter is enriching uranium in America.

Our mission is to restore our country’s ability to make nuclear fuel. Our fuel will help power AI, manufacturing, and other critical industries. It will power our next generation of reactors. Ultimately, it will power our national ambitions.

We were incubated by Founders Fund, like Anduril and Palantir before us, and we are backed by top tier investors.

Our lean, world-class team of engineers and operators is applying a first-principles approach to solving the problem of nuclear fuel production.

We are a mission-driven company with a culture of urgency, accountability and transparency.

Controller

As General Matter’s Controller, you will play a pivotal role in building and scaling the company’s accounting function. You will lead all core accounting operations, design and maintain rigorous accounting systems and controls, and ensure readiness for audits in a highly regulated environment. This role requires deep expertise in GAAP and Cost Accounting Standards (CAS), along with hands-on experience operating within a CAS-covered organization.

The ideal candidate brings a strong foundation in public accounting and thrives in building structure, driving compliance, and supporting a fast-growing, high-performing organization.

• Lead all financial close and reporting activities, ensuring timely, accurate financial statements in compliance with US GAAP, CAS, and applicable regulations.
• Own the company’s CAS compliance framework, including interpretation and application of CAS, maintenance of Disclosure Statements, and design of compliant cost accumulation and allocation methodologies.
• Serve as primary liaison for external audits and reviews, maintaining audit-ready documentation and responding to financial, CAS, and regulatory inquiries.
• Design, document, and maintain accounting policies, procedures, and internal controls that support scale, transparency, and regulatory compliance.
• Oversee accounting systems and infrastructure, including ERP and integrated tools, driving process improvements that increase efficiency, accuracy, and control.
• Support pricing, cost proposals, and contract compliance by providing accurate, compliant cost data, indirect rates, and financial analysis.
• Hire and lead the accounting team while partnering cross-functionally, translating accounting and CAS requirements into clear guidance that supports operational and strategic decision-making.

• Bachelor’s degree in Accounting, Finance, or related field.
• 8+ years of progressive accounting experience, including public accounting experience (e.g., Big 4 or mid-tier/regional firm).
• Demonstrated knowledge of Cost Accounting Standards (CAS) and cost accounting practices.
• Strong understanding of US GAAP and internal control frameworks.
• Experience supporting external audits and preparing detailed audit documentation.
• Hands-on experience with ERP/accounting systems and related tools.
• Advanced Excel skills and strong overall systems aptitude.

• Bachelor’s degree in business, finance, economics, or engineering
• Advanced skills in Microsoft Excel, applied business statistics, and general modeling experience of complex non-linear systems
• Experience in a manufacturing or technology environment
• Familiarity with reporting, visualization, intelligence, and analysis tools (SQL, Power BI, Tableau, etc.)
• Strong presentation skills with the ability to regularly interface with executive management
• Experience with presenting analytical results in both verbal and written form across a multi-disciplinary organization
• Ability to frame unstructured and complex analytical problems for a broad audience

• Willing to work extended hours and weekends as needed
• This position is based in Los Angeles, CA and requires being onsite full-time – hybrid and remote work will not be considered

General Matter is an Equal Opportunity Employer; employment with General Matter is governed on the basis of merit, competence and qualifications and will not be influenced in any manner by race, color, religion, gender, national…