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Radiant is building the world's first mass-produced, portable nuclear microreactors. The company's flagship product, Kaleidos, is a 1-megawatt, fail-safe microreactor designed for rapid deployment to hospitals, data centers, remote sites, and military bases. Founded in 2020, Radiant is preparing for first reactor testing at Idaho National Laboratory and initial customer deliveries in 2028.
As Radiant's first Senior Material Planner, you will own material planning across the full lifecycle of the company's micro nuclear reactors. This is a foundational role where you will build the material planning function from the ground up and establish how the company manages materials at scale.
Key responsibilities include:
- Partnering with Engineering to translate reactor designs into a comprehensive, company-wide planning bill of materials
- Working with the Mission Planning team to configure and launch Materials Resource Planning (MRP) within the new Enterprise Resource Planning (ERP) system
- Owning and maintaining critical part attributes—lead times, order quantities, and safety stock levels—to ensure accurate and actionable material plans
- Coordinating with Production to align make/buy decisions in MRP with the current build sequence
- Producing weekly Clear to Build reports that identify company-wide material shortages for Production
- Producing weekly Design Release Needs reports that flag designs required to meet procurement lead times
You will deliver a company-wide planning bill of materials, a fully populated Materials Resource Plan, maintained part attributes across the product line, and weekly reporting on production shortages and design release needs.
This role requires 100% onsite work at the El Segundo headquarters and willingness to work extended hours and weekends as needed.
REQUIREMENTS:
- 3–10 years of relevant experience in material planning, supply chain management, or operations, preferably within manufacturing or technology sectors
- ERP/MRP system experience
- Strong analytical and organizational skills with ability to manage complex, evolving bills of materials
- Excellent cross-functional communication skills (role sits at intersection of Engineering, Mission Planning, and Production)
- Comfort operating with ambiguity and building processes from scratch
- Desired: startup experience or background in rapidly evolving industries
