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Strategic Sourcing Manager (Onsite) - El Segundo, CA

strategic sourcing supplier management negotiation

About the Role

Radiant, an El Segundo, CA-based startup developing portable nuclear microreactors, is seeking a proactive and technically minded Strategic Sourcing Manager to strengthen our supplier base and support mission-critical production needs. In this role, you’ll help drive sourcing strategy for complex, safety-focused components as we scale toward testing and early customer deliveries.

Responsibilities

  • Own strategic sourcing activities across assigned categories, from supplier identification through award and ongoing performance management.
  • Partner with engineering, operations, and program teams to understand requirements, timelines, and technical specifications.
  • Develop sourcing plans, negotiate commercial terms, and support contracting activities.
  • Conduct market research and supplier qualification to identify qualified, cost-effective sources.
  • Track supplier performance using agreed metrics and drive corrective actions when needed.
  • Maintain documentation for sourcing decisions, cost models, and supplier agreements.

Requirements

  • Proven experience in strategic sourcing, procurement, or supplier management (especially for technical or regulated products).
  • Strong technical curiosity and ability to collaborate effectively with engineering and operations stakeholders.
  • Demonstrated skills in negotiation, vendor evaluation, and contract/commercial acumen.
  • Comfort working with cross-functional teams and managing multiple priorities in a fast-moving environment.
  • Strong organizational skills and attention to detail for documentation and supplier records.

Benefits

  • Opportunity to contribute to cutting-edge, safety-focused portable nuclear technology.
  • Work with a mission-driven team in a high-impact startup environment.
  • Growth potential as Radiant scales sourcing and supplier operations.
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Posted on July 16, 2026
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