Senior Manager Government Affairs

About the Company

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 designed to provide critical power for hospitals, data centers, remote sites, and military bases.

Responsibilities

• Develop and execute Radiant’s congressional affairs strategy to support U.S. government programs and deployment timelines.
• Build and maintain relationships with Members of Congress, committee staff, and leadership offices across defense, energy, and appropriations portfolios.
• Identify opportunities to advance authorizing and appropriations language for advanced nuclear systems.
• Track and influence annual authorization and appropriations cycles, hearings, and legislative proposals.
• Prepare briefing materials, legislative analyses, and strategic recommendations for company leadership.
• Partner with business development, policy, and technical teams to align strategy with customer needs.
• Coordinate with outside consultants, trade associations, and think tanks.
• Ensure compliance with lobbying, ethics, and disclosure requirements.

Requirements

• Bachelor’s degree in a relevant field
• 7+ years of experience in congressional policy, appropriations, or government affairs
• Experience working on Capitol Hill or closely with Congress
• Strong understanding of the congressional authorization and appropriations process
• Excellent written and verbal communication skills
• Ability to work 100% onsite in Washington, D.C.
• Willingness to work extended hours and weekends as necessary

Preferred Qualifications

• Experience working for a congressional appropriations or authorizing committee
• Experience at a government affairs firm or multi-client policy practice
• Familiarity with Department of Defense budgeting and program structure
• Knowledge of nuclear energy, advanced energy technologies, or national security policy

Benefits

• Substantial incentive stock plan
• Comprehensive medical, vision, and dental coverage
• 8 weeks of paid parental leave
• Daily catered lunch and free snacks/drinks
• Flexible PTO policy