Mechanical Engineer – Electrical Integration (Onsite)

Radiant; El Segundo (CA); On-site; USD 90,000 - 130,000; Full time

Benefits offered by this job

Stock options

Medical benefits

One Medical memberships

Vision coverage

Dental coverage

Parental leave

Job summary

Radiant in El Segundo, CA is seeking a Mechanical Engineer to design and integrate electrical components and subsystems for transportable nuclear microreactors. You will work with a cross‑functional team to solve packaging, thermal management, structural design, and system integration challenges across the hardware lifecycle.

This hands-on role covers CAD, analysis, build, test, and validation, with emphasis on 3D modeling in Siemens NX, tolerance stacks, and Design for Manufacturing.

Qualifications

• Bachelor’s degree in Mechanical Engineering or related field.
• 3+ years of hands-on mechanical design experience.
• Experience with Siemens NX or similar 3D CAD tools.
• Familiarity with electrical assemblies, enclosures, and harness routing.
• Basic understanding of structural mechanics and first-order stress calculations.
• Knowledge of thermal analysis and heat transfer concepts.
• Ability to read and create mechanical drawings with tolerances.
• Strong communication and cross-disciplinary collaboration skills.

Responsibilities

• Support the mechanical design and ownership of electrical components and subsystems.
• Design mechanical assemblies like control panels, enclosures, brackets, mounts, and supports.
• Route cables and wiring harnesses with proper strain relief and bend radii.
• Package sensors, actuators, connectors within constrained assemblies.
• Create 3D CAD models and 2D drawings in Siemens NX with GD&T basics.
• Perform first-order load calculations for structural decisions.
• Conduct thermal analysis for components and enclosures.
• Assist with material selection for electrical/thermal requirements.
• Participate in system integration, testing, and validation.
• Generate design documentation for manufacturing and service.

Skills

Siemens NX

Mechanical design

Thermal analysis

GD&T

Drawing creation

Team collaboration

Education

Bachelor’s degree in Mechanical Engineering

Tools

Siemens NX

Job description

Radiant in El Segundo, CA is seeking a Mechanical Engineer to design and integrate electrical components and subsystems for transportable nuclear microreactors. You will work with a cross‑functional team to solve packaging, thermal management, structural design, and system integration challenges across the hardware lifecycle.

This hands-on role covers CAD, analysis, build, test, and validation, with emphasis on 3D modeling in Siemens NX, tolerance stacks, and Design for Manufacturing.