Manager, Financial Reporting

Deep Fission, Inc; United States; Remote; USD 120,000 - 180,000; Full time

Job summary

Deep Fission, Inc. is seeking a Financial Reporting Manager to oversee SEC filings, technical accounting, equity administration, and internal controls in a remote-first environment. You will partner with the Controller on disclosures and major accounting matters as the company scales and evolves its processes.

The ideal candidate has public-company reporting experience, strong knowledge of U.S. GAAP, ASC 718, and robust communication skills to document memoranda and disclosures for auditors and

Qualifications

• Bachelor's degree in Accounting or closely related field.
• 6+ years of progressive accounting and financial reporting experience.
• Hands-on experience with Forms 10-K/10-Q and SEC disclosures.
• Experience with ASC 718 stock-based compensation and equity reporting.
• Experience with ICFR and SOX readiness and external audits.
• Ability to translate complex accounting into clear memoranda and disclosures.

Responsibilities

• Manage quarterly and annual SEC filings, including 10-Q and 10-K, and other filings as needed.
• Coordinate XBRL/ iXBRL tagging and external filing processes.
• Research accounting positions and prepare memoranda to support conclusions.
• Maintain equity administration and reporting, including RSUs and stock options.
• Support ICFR design, testing, and SOX readiness with internal and external teams.
• Serve as primary contact for external auditors during quarterly reviews and audits.
• Assist month-end close with journal entries and reconciliations.
• Draft accounting policies and improve reporting procedures as the company grows.

Skills

SEC reporting

GAAP knowledge

Technical accounting

Stock-based compensation

SOX/ICFR experience

External audit coordination

Written communication

Remote work coordination

Education

Bachelor's degree in Accounting

Tools

Morgan Stanley Shareworks

XBRL / iXBRL

SEC filing processes

Job description

Deep Fission is a nuclear technology company pioneering the development of a revolutionary deep borehole pressurized water reactor. We recently completed a private placement financing and Alternative Public Offering and are now operating as a public company while maintaining our startup agility and innovation focus. With strategic partnerships in place, strong private and public investment, and active engagement with the U.S. Nuclear Regulatory Commission (NRC), we are executing our next phase of growth as we advance our groundbreaking nuclear technology toward commercial deployment.

JOB SUMMARY/PURPOSE

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. This role suits a technically strong candidate who has direct public-company reporting experience, works well through complex accounting questions, and is comfortable operating in a growing environment where processes continue to evolve.

ACCOUNTABILITIES AND ESSENTIAL FUNCTIONS

SEC and External Reporting

• 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.

Technical Accounting Research

• Research and document accounting positions on complex or non-routine transactions, and prepare clear technical accounting memoranda that support 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 resource for technical accounting matters across the Finance organization.

Equity Administration and Reporting

• 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 the Company's equity service providers to support accurate and timely processing and reporting.

Stock-Based Compensation

• Prepare and maintain accurate supporting calculations, reconciliations, and disclosures related to stock-based compensation and other equity transactions.

Internal Controls & SOX

• 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.

Audit

• 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.

Close Support

• Support month-end close as needed, including journal entries, account reconciliations, and other supporting schedules.

Policies and Procedures

• Draft and maintain accounting policies, technical documentation, and reporting procedures, and identify and implement practical process improvements as the Company grows.

Additional Responsibilities

• Assist the Controller and the broader Finance organization on other accounting matters, special projects, and business needs as they arise.

MINIMUM REQUIREMENTS

Minimum education required of the position

• Bachelor's degree in Accounting or a closely related field.

Minimum experience required of the position

• 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.

Preferred

• CPA license
• Big 4 or national public accounting experience.
• Corporate accounting experience within a public, newly public, or high-growth company.

Minimum knowledge, skills, and abilities required of the position

• 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.

Preferred

• 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.

Eligibility requirements (all positions)

• 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, with quarterly travel anticipated for company offsites.

PHYSICAL REQUIREMENTS

• Able to operate a personal computer, either desktop or laptop.
• Able to sit for extended periods of time.
• Able to travel via commercial airline and ground transportation for periodic in-person company offsites.
• Able to exert up to 10 lbs. of force occasionally, and/or a minimal amount of force frequently, to lift, carry, push, or otherwise move objects.

WORKING CONDITIONS

The physical demands described here are representative of those that must be met to successfully perform the accountabilities and essential functions of this job. Reasonable accommodations may be made to enable an individual with disabilities to perform the essential functions.

• Perform other job-related duties as assigned, within your scope of responsibilities.
• Fully remote role, performed from a home office or similarly equipped remote workspace, with quarterly in-person travel for company offsite meetings.
• The role requires the ability to comprehend, document, calculate, visualize, and analyze information.
• The role may require regular hours, with occasional overtime, particularly around quarterly and annual close and SEC filing deadlines.

Our Commitment

Deep Fission is an equal opportunity employer committed to building a diverse and inclusive workplace. We welcome applicants from all backgrounds who share our passion for advancing clean nuclear energy and creating a sustainable future. We do not discriminate on the basis of race, color, creed, religion, ancestry, age, sex, marital status, national origin, disability, veteran status, or any other characteristic protected by applicable law.