Investor Relations

Title: Investor Relations

Location: El Segundo, CA

Reporting Structure: CFO

Company Description

Our client 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.

Our client's unique, practical approach to nuclear development leverages modern software engineering to rapidly deliver safe, factory-built microreactors that use existing, well-qualified materials.

Quick facts:

• Founded in 2020
• On track to test its first reactor at the Idaho National Laboratory
• Initial customer deliveries beginning in 2028
• Raised $575M+ to date - including a new strategic investment from Lockheed Martin Ventures

Responsibilities

• Build and own Radiant's Investor Relations function from the ground up, establishing the strategy, processes, programs, and operating cadence needed to support the company's continued growth.
• Partner closely with the CFO and executive leadership team to develop and communicate Radiant's investment narrative, financial story, growth strategy, and long-term value proposition.
• Own relationships across the investor and capital markets ecosystem, including institutional investors, equity and debt investors, analysts, bankers, and other key market participants.
• Lead investor communications and support quarterly and annual reporting, investor events, roadshows, presentations, and other capital markets activities.
• Serve as a strategic advisor to leadership on investor sentiment, market dynamics, messaging, and broader capital markets strategy.
• Partner cross-functionally with Finance and other internal stakeholders to ensure investor communications accurately reflect company performance, strategy, and key business developments.
• Build and manage external relationships with consultants and advisors while maintaining direct ownership and accountability for the IR function.
• Operate as a hands-on individual contributor, balancing high-level strategy with day-to-day execution in a fast-moving, high-growth environment.

Is this you?

• You're a seasoned Investor Relations leader who has owned an IR function or significant portions of one, ideally at the Director, Senior Director, Head of IR, or comparable level.
• You have strong capital markets experience and understand both equity and debt markets, with an established network of investors, bankers, analysts, and other market participants.
• You've supported executive leadership through investor communications, earnings reporting, investor events, roadshows, and other high-visibility IR activities.
• You have experience building or significantly evolving IR programs, processes, and infrastructure rather than simply operating within an established function.
• You've ideally worked with a late-stage private or high-growth company and have exposure to the transition into the public markets. Direct IPO experience is valuable, but not required.
• You're comfortable operating with limited infrastructure and a high degree of independence-you don't need a large team or established playbook to be successful.
• You have strong executive presence and can translate complex financial, operational, and strategic information into a compelling investor narrative.
• You're both strategic and hands-on, comfortable setting the direction while personally driving the work required to get there.
• You thrive in fast-paced, high-growth environments and bring a builder mentality, strong sense of ownership, and bias toward action.
• Startup experience is highly valued; prior nuclear experience is not required.

#Perks

Our client compensates people for impact and invests in those who continue to raise the bar. The new hire compensation package includes base salary, substantial equity grants, and comprehensive health benefits. Total compensation and level are determined through a rigorous evaluation of interview performance, experience, education, and qualifications, and are designed to support continued growth as scope, responsibility, and impact expand at our client.

• 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.
• Daily catered lunch. 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.