SeniorAccountingManager

ABOUT RADIANT Radiant is an El Segundo, CA-based startup building the world’s first mass-produced, portable nuclear microreactors. The company’s first reactor, Kaleidos, is a 1-megawatt, fail-safe microreactor that can be transported anywhere power is needed and run for up to 5 years without refueling. Portable nuclear power with rapid-deploy capability can replace similar-sized diesel generators and provide critical asset support for hospitals, data centers, remote sites, and military bases. Radiant’s unique, practical approach to nuclear development leverages modern software engineering to rapidly deliver safe, factory-built microreactors that use existing, well-qualified materials. Founded in 2020, Radiant is on track to test its first reactor at the Idaho National Laboratory this summer, with initial customer deliveries beginning in 2028. About the Role We are seeking an experienced Accounting Manager to lead and manage day-to-day accounting operations, ensure compliance with GAAP, and support the month-end close and reporting processes. This role will oversee areas such as general ledger maintenance, fixed assets, inventory, accruals, payroll accounting, and financial reporting. The ideal candidate has strong technical accounting knowledge, attention to detail, and the ability to manage and mentor staff while working cross-functionally. Responsibilities & Duties: - Manage daily accounting operations including fixed assets and bank reconciliations. - Manage month-end and year-end close processes and ensure timely and accurate financial reporting. - Review and approve journal entries, account reconciliations, and supporting schedules. - Maintain and monitor accounting policies and internal controls to ensure compliance with GAAP. - Manage accounting for fixed assets, including capitalization, depreciation, and disposals. - Oversee inventory accounting processes and ensure accurate COGS recognition and valuation. - Support audit processes, including preparation of