Radiant
Nuclear
Director,Cybersecurity
Neural analysis suggests this role is
optimal for Director candidates.
“Director, Cybersecurity at Radiant. Skills: Cybersecurity strategy, Security controls, Information protection. Lead development and implementation of security strategies. Lead development and implementation of security policies”
Industry & Context.
Provide solutions
Work extended hours, Work weekends, 100% onsite, Export controls compliance
What They're Looking For.
Must Have
7+ years cybersecurity experience, Defense or high-assurance environment experience, Understanding of application security, Performing assessments utilizing risk management framework, Proven track record of developing and implementing security policies and procedures, Knowledge of relevant federal and state regulations, Bachelor's degree in Computer Science, Engineering, or related field
Nice to Have
Direct experience with nuclear security regulations, Experience interfacing with executive leadership, Experience interfacing with external regulators, Familiarity with ICS/OT cybersecurity, Prior work with COMSEC, Prior work with insider threat programs, Prior work with physical-cyber integration, Previous experience working with defense contracts, Understanding of relevant export control regulations
What You'll Do.
Lead development and implementation of security strategies
Lead development and implementation of security policies
Manage budget for security infrastructure
Manage resources for security infrastructure
Lead cybersecurity audits
Lead cybersecurity assessments
Review regulatory requirements
Provide solutions meeting regulatory intent
Provide rationale meeting regulatory intent
Review operational requirements
Review system specification documents
Ensure security requirements are addressed
Ensure security requirements are incorporated
Educate stakeholders on protecting material
Educate stakeholders on protecting information
Serve as liaison with regulators
Serve as liaison with auditors
Serve as liaison with government stakeholders
How You'll Work.
Team & Collaboration
Partnering with engineering; Partnering with IT
Communication Scope
Educate stakeholders
Full Job Description
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 Radiant is seeking a Director, Cybersecurity to implement the controls and protection necessary for safeguarding our sensitive information and technology. You will be responsible for cybersecurity, partnering with our engineering and IT departments to implement security controls, as well as developing and managing information protection programs. You will drive innovation across the nuclear industry by advocating for controls and access solutions that have not been previously deployed. A successful candidate will leveragetheir experience on DoD and IC programs and bring those same designs to the nuclear space. Creativity and a passion for challenging the status quo are a must. Responsibilities & Duties: - Lead the development and implementation of comprehensive security strategies and policies. - Manage budget and resources for security infrastructure. - Lead cybersecurity audits, assessments, and control testing. - Review regulatory requirements and provide solutions and rationale that meet the intent of those requirements with modern tools. - Review operational requirements and system specification documents to
Applying for this Director, Cybersecurity role?
Most applicants get filtered before a human reads their resume. See if yours makes the cut.
How to Apply on Ashby
- Ashby is a fast modern ATS — most applications take under 3 minutes.
- The resume parser is strong; verify parsed experience dates and job titles.
- Custom screening questions are often scored algorithmically — answer completely.
- Location field affects geo-based screening; use your actual metro area.
ANONYMOUS · UNFILTERED
What do employees actually say about Radiant?
Real rants from real employees. Read before you apply.