Senior Technical Program Manager, Security & IT

About the role

Radiant, a startup developing portable nuclear microreactors, is looking for a Senior Technical Program Manager to own visibility and delivery across its IT and security program portfolio. You will coordinate eight concurrent programs spanning reactor testing, fuel facility construction, warehouse build‑outs, site decommissioning and compliance initiatives.

Key responsibilities

• Establish a system of record for tracking IT and security programs, implementing tooling, cadence and reporting.
• Own operating cadence: run recurring status meetings, set agendas, drive decisions and capture actions across IT, security, facilities, construction and engineering.
• Maintain integrated schedules, dependencies, risks and milestones; provide early escalation of issues.
• Coordinate IT scope with construction, ensuring structured cabling, MDF/IDF, low‑voltage, access control, cameras, wireless and carrier circuits are built into contractor milestones.
• Support CMMC and NIST SP 800‑171 compliance programs, tracking milestone plans, POA&M status, remediation, evidence collection and assessor coordination.

Required profile

• Proven experience managing complex, multi‑disciplinary technical programs in a fast‑moving environment.
• Strong ability to keep programs visible, aligned and unblocked for multiple stakeholder groups.
• Excellent organizational and communication skills to represent IT leadership in cross‑functional meetings.

Required skills

• CMMC compliance management
• NIST SP 800‑171 compliance
• IT security program oversight
• Project and program management tools (e.g., schedule integration, risk tracking)