Own material planning for portable nuclear microreactors at a startup focused on innovative energy solutions.
Posted by employer 1 day ago
First seen on Joblaze 6 hours ago
Last verified on the company career page 6 hours ago
What you'll build
- Translate reactor design into a planning bill of materials
- Configure and launch Materials Resource Planning within ERP system
- Maintain part attributes for accurate material plans
- Coordinate make/buy decisions with Production
- Produce weekly material shortage reports
Must have
- 3 – 10 years of relevant experience in material planning, supply chain management, or operations
- ERP/MRP system experience
- Strong analytical and organizational skills
- Excellent cross-functional communication skills
- Comfort operating with ambiguity
Nice to have
- Experience working in a start-up or rapidly evolving industry
Practical constraints
- Must work 100% onsite at El Segundo HQ
- Must be willing to work extended hours and weekends as necessary
Requirements
- Experience
- 3–10 years
Not disclosed in this posting: compensation, visa sponsorship.
Benefits
Joblaze summary
The Senior Material Planner at Radiant is responsible for overseeing material planning throughout the lifecycle of portable nuclear reactors, collaborating closely with Engineering to create a comprehensive bill of materials. This role requires expertise in ERP and MRP systems, along with strong analytical skills to manage complex material attributes and ensure alignment with production needs. Ideal candidates will have 3 to 10 years of experience in material planning or supply chain management, preferably in manufacturing or technology sectors. As the first Material Planner, this position offers a unique chance to establish foundational processes in a startup environment.
Joblaze insights
- Listed today — first seen on Joblaze October 7, 2026. Last confirmed on Radiant's careers page October 7, 2026.
Quick facts
- Is the Senior Material Planner role remote?
- No — this is an on-site role in El Segundo, CA, United States.
- How much experience is required?
- 3–10 years of relevant experience for this Senior Material Planner role.
- Where is the role based?
- Radiant is hiring for this position in El Segundo, CA, United States.
- What seniority level is this role?
- Radiant targets senior candidates for this position.
- Is this full-time or contract?
- Full-time for this Senior Material Planner role at Radiant.
From the original posting
About the Role
Radiant is seeking a proactive Senior Material Planner to own material planning across the full lifecycle of our micro nuclear reactors. This role partners with Engineering to translate reactor designs into a company-wide planning bill of materials and works alongside the Mission Planning team to stand up Materials Resource Planning (MRP) within our new Enterprise Resource Planning (ERP) system. You will manage key part attributes — lead times, order quantities, and safety stock — to keep material plans accurate across the build. You will coordinate closely with Production to ensure make/buy decisions in MRP reflect the current build sequence. As Radiant's first Material Planner, you will build this function from the ground up and set the standard for how material planning operates at the company.
Responsibilities & Duties:
Planning Bill of Materials: Partner with Engineering to translate reactor design into a company-wide planning bill of materials.
MRP Standup: Work with the Mission Planning team to configure and launch Materials Resource Planning within our new ERP system.
Part Attribute Management: Own and maintain part attributes — lead times, order quantities, safety stock levels — to ensure accurate, actionable material plans.
Make/Buy Alignment: Coordinate with Production to keep make/buy decisions in MRP current with the production plan.
Shortage Reporting: Produce weekly Clear to Build reports identifying company-wide material shortages for Production.
Design Release Reporting: Produce weekly Design Release Needs reports, flagging designs required to meet procurement lead times.
Deliverables:
Company-wide planning bill of materials
Populated Materials Resource Plan
Maintained part attributes across the product line
Weekly Clear to Build reports showing production shortages
Weekly Design Release Needs reports based on procurement lead times
Required Qualifications & Skills:
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 an ability to manage complex, evolving bills of materials.
Excellent cross-functional communication skills — this role sits at the intersection of Engineering, Mission Planning, and Production.
Comfort operating with ambiguity and building processes from scratch.
Desired Qualifications & Skills:
Experience working in a start-up, or other rapidly evolving industry is preferred
Additional Requirements:
Must be willing to work extended hours and weekends as necessary to
accomplish our mission.
Benefits and Perks
Stock: Substantial incentive stock plan for all full-time employees.
Daily catered lunch. Free snacks and drinks.
Flexible PTO policy. Remote workday allocation.
Standard company text repeated across Radiant's postings is omitted here.