Senior Mechanical Engineer, Mechanisms — Onsite El Segundo

Radiant; El Segundo, Northern (CA, KY); Hybrid; USD 120,000 - 190,000; Full time

Benefits offered by this job

Stock: equity plan

Medical benefits

One Medical: memberships

Vision and Dental coverage

Parental leave

Paid lunches

Flexible PTO

Job summary

Radiant, an El Segundo, CA-based startup building portable nuclear microreactors, seeks a Senior Mechanical Engineer, Mechanisms, to design and develop critical mechanisms within Kaleidos. You will perform trade studies, material selection, and detailed structural analysis to ensure reliability and safety.

This on-site role involves ownership of actuators/valves, BOM management, supplier development, and cross-functional collaboration to meet program goals and deliverables as the company scales.

Qualifications

• Bachelor’s degree in Mechanical or Aeronautical Engineering.
• 4+ years designing mechanisms.
• 4+ years of stress analysis with hand calculations and FE tools.

Responsibilities

• Own critical mechanisms like actuators and valves.
• Perform trade studies and develop designs to meet requirements.
• Conduct thermomechanical and kinematic analyses to ensure structural integrity.
• Develop manufacturing/assembly instructions and test plans.
• Create and manage a BOM and coordinate supplier development.
• Lead subassembly design, manufacturing, and test schedules.
• Perform risk analysis (FMEA) for subsystems.
• Collaborate with cross-functional teams and communicate requirements.

Skills

Mechanism design

Finite element analysis

Engineering degree

Education

Bachelor in Mechanical/Aeronautical Eng

Tools

NX CAD

Abaqus/Ansys/FEMAP

Job description

Radiant, an El Segundo, CA-based startup building portable nuclear microreactors, seeks a Senior Mechanical Engineer, Mechanisms, to design and develop critical mechanisms within Kaleidos. You will perform trade studies, material selection, and detailed structural analysis to ensure reliability and safety.

This on-site role involves ownership of actuators/valves, BOM management, supplier development, and cross-functional collaboration to meet program goals and deliverables as the company scales.