Senior Manager, Technical Program ManagementEl Segundo, California, United States

Senior Manager, Technical Program Management

Radiant is an El-Segundo, CA-based clean energy startup building a nuclear microreactor. A climate-friendly alternative to diesel generators, Radiant's Kaleidos 1MW microreactor will be the world's first portable, zero-emissions power source that works anywhere. We plan to test our development reactor by 2026 and if successful, it will be the first new commercial reactor design to achieve a fueled test in over 50 years. Radiant's goal is to bring one of the world's first factory-constructed microreactors to market. Our microreactor can bring power to remote parts of the world and provide backup power for life-saving applications in hospitals or disaster-relief scenarios.

Senior Manager, Technical Program Management

Radiant is seeking a Senior Manager, Technical Program Management to lead the strategic execution of complex engineering programs critical to delivering the world's first portable nuclear microreactor. This high-visibility role will oversee cross-functional program planning, alignment, and execution across Radiant's engineering, operations, and leadership teams.

You will drive the delivery of integrated, multi-disciplinary technical initiatives aligning timelines, resources, and milestones in service of our mission to deploy a new commercial reactor design for fueled operation by 2026. This role requires an exceptional aptitude for proactively spotting roadblocks and pre-emptively aligning resources to remove those blocks, thereby bringing clarity, structure, and momentum to complex, high-stakes efforts.

Responsibilities and Duties :

• Drive company-wide technical programs and own the technical outcomes. You will be responsible for everything from planning through execution, ensuring delivery of key milestones across design, prototyping, testing, and deployment.
• Partner with executive leadership to set priorities, develop integrated roadmaps, and drive investment decisions.
• Foster new links between teams by leading cross-functional collaboration with engineering, operations, safety, regulatory, and commercial teams to ensure synchronization of goals and resources.
• Establish and manage program-level risk frameworks, identifying critical dependencies, bottlenecks, and failure modes early and working with teams to mitigate them decisively.
• Communicate program status, challenges, and strategy updates clearly to executive stakeholders and external partners, all while holding each and every stakeholder accountable within defined frameworks.

Required Qualifications :

Desired Qualifications :

Key Traits :

Additional Qualifications :

Employee Benefits for Eligible Employees :

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.