About Radiant

Radiant is an El Segundo, CA-based company building the world's only mass-produced, transportable nuclear microreactors. The U.S. grid is under growing strain, with power demand accelerating, driving higher utility costs, rising carbon emissions, and interconnection backlogs. Radiant has a solution, transportable, on-site power. Our first reactor, Kaleidos, is 1 megawatt: small enough to be factory-built, transported by land, sea, or air, and deployed wherever power is needed. 1 MW can power 1000 homes for five years. Ship it back and we refuel for a 20 year operating life. We made energy a product that can be used for critical infrastructure like military bases, data centers, hospitals, and remote sites, as well as the commercial main street businesses that keep America running. Founded in 2020, Radiant is under contract to deliver power to the U.S. Army, Navy and Air Force and has signed pre-order agreements with Equinix, with deployments 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 schedules and documentation for external auditors.

Assist in implementing new systems, tools, or process improvements to enhance the efficiency and accuracy of the accounting function.

Collaborate with FP&A, procurement, operations, and HR on cross-functional initiatives and reporting.

Lead, mentor, and develop junior accounting staff.

Required Qualifications & Skills

Bachelor’s degree in Accounting, Finance, or related field (CPA preferred).

5+ years of progressive accounting experience, including at least 2 years in a supervisory or management role.

Strong understanding of U.S. GAAP and internal controls.

Experience with ERP systems (e.g., NetSuite, SAP, Oracle, Microsoft Dynamics, ION).

Advanced Excel skills (pivot tables, lookups, etc.)

Excellent analytical, organizational, and communication skills.

Ability to work independently, manage multiple priorities, and meet tight deadlines.

Desired Qualifications & Skills

Experience in government contracting, technology, manufacturing.

Prior involvement in system implementations or upgrades.

Exposure to multi-entity or global accounting structures.

Familiarity with ASC 606, ASC 842, and other relevant accounting standards.

Additional Requirements

Must be willing to work extended hours and weekends as necessary to accomplish our mission.

Must work 100% onsite at El Segundo HQ.

Benefits and Perks

Stock: Substantial incentive stock plan for all full-time employees.

Medical: 100% up to base silver level plan for employee + 50% dependents, offers up to Platinum plans.

One Medical: Sponsored memberships for employees and their dependents.

Vision: 100% top tier plan coverage + 50% for dependents.

Dental: 100% top tier plan coverage, orthodontia extra, 50% for dependents.

Voluntary life, accident, hospital, critical illness, commuter and FSA/HSA are offered as employee contributed benefits.

8-weeks of paid parental leave for all parents. Additional paid pregnancy leave for CA employees.