Join Radiant: Secure the Future of Energy
Radiant is forging a new path in clean energy, developing the world’s first mass-produced, portable nuclear microreactors. Based in El Segundo, CA, we're building a future where reliable, carbon-free power is accessible anywhere it's needed. Our flagship reactor, Kaleidos, is a 1-megawatt, fail-safe microreactor designed for rapid deployment and up to 5 years of operation without refueling. This groundbreaking technology is set to revolutionize critical asset support for hospitals, data centers, remote sites, and military bases, replacing traditional diesel generators with sustainable, high-impact solutions.
At Radiant, we blend modern software engineering with established nuclear development practices, creating safe, factory-built microreactors using well-qualified materials. Founded in 2020, we're rapidly advancing, with our first reactor test at Idaho National Laboratory this summer and initial customer deliveries slated for 2028. This is your chance to be at the forefront of an energy revolution.
Director, Cybersecurity: Pioneer Security in Nuclear Innovation
Radiant is seeking an visionary Director, Cybersecurity to establish and champion the robust security framework essential for protecting our cutting-edge technology and highly sensitive information. This isn't just a role; it's an opportunity to redefine cybersecurity within the nuclear industry.
You will be the architect of our cybersecurity posture, collaborating closely with our engineering and IT departments to design and implement groundbreaking security controls. Your expertise will be crucial in developing and managing comprehensive information protection programs that challenge conventional approaches. We're looking for a leader who can leverage deep experience from DoD and IC programs, translating those high-assurance designs into the unique demands of the nuclear space. If you're creative, passionate about challenging the status quo, and eager to drive innovation, this is where you belong.
Your Mission & Impact: Lead the strategic development and flawless implementation of our overarching security strategies and policies. What You Bring: 7+ years of progressive experience in cybersecurity, ideally within demanding defense or high-assurance environments. Bonus Points For: Direct experience navigating nuclear security regulations (NRC 10 CFR 73). Commitment & Location: Must be willing to work extended hours and weekends as necessary to achieve our ambitious mission. Benefits & Perks: Invest in Your Future Equity: Substantial incentive stock plan for all full-time employees, connecting you directly to our success. Total Compensation & Growth The brightest minds in advanced reactor development don't wait for opportunities—they create them. If you are that exceptional talent, eager to join a winning team and redefine the future of energy, connect with us directly for immediate opportunities: [email protected]. We are an equal opportunity employer and all qualified applicants will receive consideration for employment without regard to race, color, religion, sex, sexual orientation, gender identity or expression, pregnancy, age, national origin, disability status, genetic information, protected veteran status, or any other characteristic protected by law. Unfortunately, we are unable to provide visa sponsorship at this time. This position involves access to technology that is subject to U.S. export controls. Any job offer made will be contingent upon the applicant’s capacity to serve in compliance with U.S. export controls.
Manage critical budget and resource allocation for our expanding security infrastructure.
Direct cybersecurity audits, assessments, and rigorous control testing to ensure unparalleled resilience.
Translate complex regulatory requirements into innovative, modern security solutions and articulate their strategic rationale.
Review operational requirements and system specifications, meticulously integrating security from inception into all processes.
Empower and educate stakeholders on cutting-edge, efficient methods for safeguarding vital materials and information.
Serve as Radiant’s primary liaison with regulators, auditors, and government stakeholders, building trust and ensuring compliance.
Profound understanding of application security and proven expertise in performing assessments guided by a robust risk management framework.
A demonstrated track record of successfully developing and implementing impactful security policies and procedures.
In-depth knowledge of relevant federal and state regulations governing security in the nuclear and defense industries.
Bachelor's degree in Computer Science, Engineering, or a closely related technical field.
Proven ability to effectively interface with executive leadership and external regulatory bodies.
Familiarity with Industrial Control Systems (ICS)/Operational Technology (OT) cybersecurity in energy or defense contexts.
Prior experience with COMSEC, insider threat programs, or the integration of physical and cyber security.
Professional certifications such as CPP, PSP, or PCI from ASIS International.
Previous engagement with defense contracts and a solid understanding of export control regulations (Part 810, Part 110, EAR, ITAR).
This is a 100% onsite role at our state-of-the-art El Segundo, CA headquarters.
At Radiant, we believe in rewarding impact and investing in our exceptional team members. Our comprehensive benefits package is designed to support your well-being and growth:
Medical: 100% coverage up to base silver level plan for employees + 50% for dependents, with options for up to Platinum plans.
One Medical: Sponsored memberships for employees and their dependents for convenient primary care.
Vision: 100% top-tier plan coverage + 50% for dependents.
Dental: 100% top-tier plan coverage, with orthodontia options, and 50% for dependents.
Voluntary Benefits: Life, accident, hospital, critical illness, commuter benefits, and FSA/HSA options available.
Paid Parental Leave: 8 weeks for all parents, with additional paid pregnancy leave for CA employees.
Nourishment: Daily catered lunch, free snacks and drinks to keep you fueled.
Work-Life Balance: Flexible PTO policy and remote workday allocation to support your personal life.
Culture: Engaging company and team-bonding events, happy hours, and a vibrant in-person camaraderie.
Location: Beautiful El Segundo headquarters, just moments from the Pacific Ocean.
Radiant compensates for impact. Our new hire compensation package is competitive and includes a base salary, substantial equity grants, and comprehensive health benefits. Your total compensation and level will be determined through a rigorous evaluation of your interview performance, experience, education, and qualifications, ensuring it supports your continuous growth as your scope, responsibility, and impact expand at Radiant.