Deputy CFO

Deep Fission, Inc

About The Position

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. We are looking for a finance executive who can operate at the intersection of rigorous financial management and sophisticated investor engagement, and who is ready to assume overall CFO responsibilities as the company grows. The Deputy CFO will serve as a strategic partner to the CFO, owning core financial operations while leading the company’s investor relations function and serving as a key voice to the capital markets. In this role, you will be helping shape how investors, analysts, and the broader market understand Deep Fission’s story. This role sits at the center of finance, strategy, and communications, with real influence over how the company presents itself as it grows into its public-company identity.

Requirements

MBA (or equivalent) and CPA strongly preferred
8 to 12 years of progressive finance experience, including at least 3 years in a senior finance leadership role (Deputy CFO, VP Finance, Controller, CFO, or equivalent)
Demonstrated experience in investor relations at a public company, including direct involvement in earnings communications, analyst relationships, and SEC compliance
Comfortable in a start up environment with change
Deep understanding of US GAAP, financial reporting, and internal controls in a public company environment
Proven ability to build financial infrastructure from the ground up or during periods of rapid growth and change
Strong financial modeling, FP&A, and executive-level reporting capabilities
Exceptional written and verbal communication skills — you are as comfortable presenting to a room of institutional investors as you are reviewing a reconciliation
High integrity and an ownership mentality, with demonstrated ability to lead through ambiguity in fast-moving, pre-commercial environments where resourcefulness matters as much as expertise

Nice To Haves

Experience in venture-backed, high-growth, or regulated industry environments such as nuclear, energy, aerospace, defense, or biotech
Prior experience supporting a company through its first one to two years of life as a public company, including the transition from private reporting standards
Familiarity with capital markets dynamics relevant to deep tech or energy infrastructure companies
Experience working cross-functionally with legal, government relations, and communications teams on disclosure and external affairs matters

Responsibilities

Lead the development and execution of Deep Fission’s investor relations strategy, including quarterly earnings communications, investor presentations, and ongoing shareholder engagement
Serve as a primary point of contact for institutional investors, analysts, and financial media, building relationships and ensuring consistent, accurate messaging about the company’s financial position and strategic direction
Prepare and deliver earnings call materials, investor day presentations, press releases, and other external-facing financial communications in coordination with legal, communications, and the executive team
Monitor analyst coverage, investor sentiment, and peer company communications to inform messaging and ensure Deep Fission is well-positioned in the capital markets
Partner with legal counsel to ensure all investor communications comply with SEC disclosure requirements and Regulation FD
Partner with the CFO to manage all financial operations including budgeting, forecasting, cash management, and financial reporting
Oversee the preparation of board materials, investor reporting packages, and fundraising or secondary offering documentation
Ensure the accuracy, timeliness, and GAAP compliance of all financial statements and SEC filings, including 10-K, 10-Q, and 8-K submissions
Build and maintain detailed financial models to support business planning, scenario analysis, and capital allocation decisions
Manage relationships with external auditors, legal counsel, banking partners, and key financial vendors
Work closely with the COO to align financial planning cycles with operational roadmaps, ensuring near-term cash management and longer-term capital allocation decisions reflect actual operational timelines and constraints
Partner with the COO to develop and maintain operational financial frameworks, including unit economics, capacity planning models, and cost-per-output metrics that connect financial performance to operational execution
Drive the continued implementation and optimization of financial systems, controls, and processes as Deep Fission scales
Support compliance with government contracting, grant reporting, and regulatory financial requirements as applicable
Develop and mentor the finance team, building organizational depth and bench strength over time
Be prepared to step into and assume overall CFO responsibilities, serving as acting CFO in the absence of the CFO and representing the finance function with investors, partners, and the board