Investor Relations Director

About the role

We are seeking a Director of Investor Relations to build and lead this function from the ground up. This is a senior, high-visibility role reporting directly to the CFO and working closely with the CEO and Board. You will own the full investor lifecycle — from prospecting and diligence support through ongoing relationship management — across multiple investor types.

Responsibilities

• Build the IR function from the ground up: Own the strategy, messaging, materials, and reporting cadence across our existing and prospective investor base.
• Develop deep knowledge of investor thesis fit, sector appetite, and decision-making dynamics.
• Maintain intelligence on market dynamics and capital market trends in nuclear, energy, advanced technology.
• Partner with the CFO and Executive team to support any financing processes including materials development, logistics, diligence coordination, and investor Q&A.
• Prepare and maintain core IR materials: investor presentations, data room, financial models, one-pagers, FAQs.
• Serve as a key point of contact for existing investors: manage quarterly update cadence, information-share rhythms, and ad-hoc communications.
• Deepen relationships: keep existing investor close, field inquiries, manage communications, and surface opportunities across our sophisticated cap table.
• Partner with CFO and exec team to prepare board meeting materials and investor updates.
• Help develop a scalable IR infrastructure: reporting frameworks, disclosure processes, investor day planning, and materials management.
• Shape the narrative: advise on investor narrative and messaging as the company scales through key milestones, translate financial performance, product velocity, and market position into a compelling, consistent story.
• Partner with Marketing team to ensure investor-facing narrative is consistent with brand, product, and policy positioning.
• Identify and manage relevant speaking opportunities, investor conferences, and industry forums.

Requirements

• 8–12 years of relevant experience across investor relations, investment banking, buyside investing or equity research, or corporate development — preferably with exposure to deep-tech, energy, defense, or infrastructure companies.
• Track record of supporting or leading fundraising processes at high-growth, venture backed companies and represented the company at investor conferences and roadshows; public company IR experience a strong plus.
• Familiarity with the nuclear, energy, or advanced manufacturing sector strongly preferred.
• Experience working with a range of sophisticated institutional investors across equity, debt and other asset classes.
• Established network across institutional investors, VC, and / or investment banking, particularly in deep-tech, energy, defense, or infrastructure companies.

Skills

• Exceptional written and verbal communication; ability to translate complex technical and financial content into compelling investor narratives.
• First-principles thinker with the ability to understand and manage first-of-a-kind products and contexts.
• Strong financial modeling and analytical chops; comfortable in Excel and able to engage substantively on valuation, comparable company analysis, and capital structure questions.
• Experience building and managing data rooms and coordinating multi-party diligence processes.
• Highly organized with the ability to manage multiple work streams under tight deadlines.

Qualifications

• Builder mentality: comfortable creating structure where none exists and owning outcomes end to end.
• Low-ego, high-output; thrives in a lean, fast-moving environment where everyone operates above their title.
• Mission-aligned: genuinely excited about Radiant's role in energy, national security, and the future of nuclear power.

Benefits

• 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.
• Free snacks and drinks.
• Flexible PTO policy.
• Remote workday allocation.
• Company and team-bonding events, happy hours and in-person camaraderie.
• Beautiful El Segundo headquarters close to the Pacific Ocean.