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Job details

Senior Structures Engineer

Radiant is a clean-energy startup in El Segundo developing Kaleidos, a portable 1MW nuclear microreactor designed as a zero-emissions alternative to diesel generators. We are looking for a Senior Structures Engineer to own design, analysis, and delivery of critical reactor structures—covering shielding, containers, and high-temperature graphite/metallic systems—working cross-functionally to meet strict volumetric, thermal, and safety requirements.

Skills

  • Thermomechanical analysis (static, fatigue) using hand calculations and FEA
  • Dynamic analysis (vibration, shock) and structural integrity assessment
  • Material selection for high-temperature and radiation environments
  • CAD assembly design and BOM creation
  • Supplier development and manufacturing/assembly documentation
  • Risk analysis (FMEA) and test plan development
  • Clear written and verbal communication for cross-functional collaboration

Responsibilities

  • Own design of critical structures including transportable shielding systems, container systems, and high-temperature graphite/metallic components.
  • Perform trade studies and select materials to meet program and environmental requirements.
  • Conduct detailed thermomechanical and dynamic analysis (static strength, fatigue/durability, vibration, shock) using hand calculations and finite element tools.
  • Develop and execute manufacturing/assembly instructions, test plans, and BOM management.
  • Find and qualify suppliers and manage subassembly design, manufacturing, and test schedules.
  • Lead risk analysis activities (FMEA) for structural subsystems.
  • Collaborate with cross-functional teams to collect requirements and provide clear technical feedback.

Education

  • Bachelor’s degree in Mechanical, Aeronautical, Civil, or Structural Engineering from an accredited institution

Benefits

  • Substantial incentive stock plan for full-time, salaried employees
  • Medical coverage: 100% up to base silver for employee, 50% for dependents; options up to Platinum
  • Sponsored One Medical memberships for employees and dependents
  • Vision: 100% top tier coverage for employee, 50% for dependents
  • Dental: 100% top tier coverage for employee, 50% for dependents (orthodontia extra)
  • Voluntary benefits: Life, Accident, Hospital, Critical Illness, Commuter, FSA
  • Free onsite snacks and drinks
  • Flexible PTO policy
To read the complete job description, please click on the ‘Apply’ button

Average salary estimate

$160000 / YEARLY (est.)
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$140000K
$180000K

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DEPARTMENTS
SENIORITY LEVEL REQUIREMENT
TEAM SIZE
No info
HQ LOCATION
No info
SALARY RANGE
$140,000/yr - $180,000/yr
EMPLOYMENT TYPE
Full-time, onsite
DATE POSTED
August 20, 2025
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