Manager, Financial Reporting

Deep Fission, Inc

1d•Remote

About The Position

Deep Fission is seeking a Financial Reporting Manager to manage the day-to-day execution of the Company's external financial reporting with the U.S. Securities and Exchange Commission (SEC) and serve as a key technical accounting resource within the Finance organization. Reporting to the Controller, this individual contributor role carries significant responsibility for SEC filings, technical accounting research, equity administration, and internal controls, and works closely with the Controller on significant accounting matters, disclosures, and external reporting decisions. The role is suited to a technically strong candidate with direct public-company reporting experience who can work through complex accounting questions in a growing environment where processes continue to evolve. The role is fully remote, performed from a home office or similarly equipped remote workspace, with quarterly in-person travel anticipated for company offsites. It may require regular hours and occasional overtime, particularly around quarterly and annual close and SEC filing deadlines.

Requirements

Bachelor's degree in Accounting or a closely related field.
6+ years of progressive accounting and financial reporting experience.
Hands-on experience preparing and/or reviewing Forms 10-K and 10-Q and related SEC financial statement disclosures.
Demonstrated experience with technical accounting research and preparation of clear accounting memoranda.
Experience with stock-based compensation accounting under ASC 718 and equity-related accounting.
Experience supporting or operating within an internal control over financial reporting (ICFR) and Sarbanes-Oxley (SOX) environment.
Experience working directly with external auditors during quarterly reviews and annual audits.
Strong working knowledge of U.S. GAAP and SEC reporting requirements.
Ability to interpret authoritative accounting guidance and translate complex accounting matters into clear technical conclusions, accounting memoranda, and disclosures.
Strong written communication skills, particularly for technical accounting documentation and external reporting.
High degree of attention to detail, with strong analytical and problem-solving skills.
Ability to independently manage SEC reporting timelines, multiple priorities, and cross-functional dependencies as the Company scales.
Must be a U.S. person eligible to meet Department of Energy (DOE) Export Control requirements under 10 CFR 810.
Ability to work independently in a remote-first, cross-functional environment and partner effectively with senior Finance, Legal, People Operations, and external audit stakeholders.
Willingness to travel domestically for team offsites, training sessions, and site visits as required.

Nice To Haves

CPA license.
Big 4 or national public accounting experience.
Corporate accounting experience within a public, newly public, or high-growth company.
Experience with equity administration platforms such as Morgan Stanley Shareworks, Carta, or similar systems.
Experience researching or accounting for complex equity instruments, leases under ASC 842, and asset retirement obligations under ASC 410.
Experience with XBRL and SEC filing processes and service providers.

Responsibilities

Prepare quarterly and annual SEC filings, including Forms 10-Q and 10-K, and support other SEC filings as needed, including proxy statements, registration statements, and Forms 8-K involving financial information.
Coordinate and review XBRL and iXBRL tagging and other aspects of the external filing process.
Research and document accounting positions on complex or non-routine transactions, and prepare technical accounting memoranda supporting well-reasoned conclusions.
Monitor new and emerging FASB and SEC guidance, evaluate its applicability to Deep Fission, and lead or support implementation as needed.
Serve as the day-to-day technical accounting resource across the Finance organization.
Help implement and maintain Morgan Stanley Shareworks as the Company's equity administration platform, and administer equity activity, including grants, RSU vesting and settlement events, stock option exercises, and other equity transactions.
Partner with Legal, People Operations, Payroll, and equity service providers to support accurate and timely processing and reporting of equity activity.
Prepare and maintain supporting calculations, reconciliations, and disclosures related to stock-based compensation and other equity transactions.
Help design, document, and execute the Company's internal control over financial reporting (ICFR) program, and manage the day-to-day operation of key controls.
Coordinate with external auditors and other departments to support Sarbanes-Oxley (SOX) readiness.
Serve as a key day-to-day contact for external auditors during quarterly reviews and the annual audit; manage prepared-by-client lists, supporting schedules, and technical inquiries.
Support month-end close as needed, including journal entries, account reconciliations, and supporting schedules.
Draft and maintain accounting policies, technical documentation, and reporting procedures, and identify and implement practical process improvements as the Company grows.
Assist the Controller and broader Finance organization with other accounting matters, special projects, and business needs as they arise.
Travel domestically for team offsites, training sessions, and site visits as required, with quarterly travel anticipated for company offsites.
Perform other job-related duties as assigned, within the scope of responsibilities.