Sr Engineer, Mechanical Design – High Voltage EV Systems

Aptera Motors
  • Carlsbad, California
    5 days ago

    Job Description

    About the role

    We are seeking an experienced Mechanical Design Engineer with expertise in packaging high-voltage systems (400 V – 800 V) for electric vehicles. This role focuses on designing compact, reliable, and safe enclosures and packaging for circuit board assemblies, busbars, harnesses, and high-voltage components. You’ll work closely with electrical and systems engineers to ensure that mechanical packaging solutions meet demanding electrical, thermal, and safety requirements.  

    What you'll do

    • Package high-voltage (400–800 V) automotive systems, including circuit board assemblies, busbars, harnesses, and power distribution units. 
    • Develop dense, compact layouts that optimize thermal performance, dielectric strength, clearances/creepage, and long-term reliability. 
    • Apply a working knowledge of dielectric properties of materials, thermal management, and material creep to ensure safe, durable designs. 
    • Collaborate with electrical engineers on component placement, routing, and packaging trade-offs. 
    • Incorporate EMI/EMC mitigation strategies into packaging solutions. 
    • Produce detailed 3D CAD models and 2D drawings (CATIA preferred; willingness to learn required). 
    • Support harness routing and packaging using Arcadia (or learn quickly on the job). 
    • Participate in design reviews and work closely with suppliers to ensure manufacturable solutions. 
    • Hands on assembly of the designs for proving out design and creating work instructions. 

    Qualifications

    • Proven track record in packaging 400–800 V EV components (circuit board assemblies, busbars, harnesses, distribution units). 
    • Read and understand system schematics and wiring diagrams. 
    • Proficiency in 3D CAD tools (CATIA preferred) with ability to deliver production-ready models and drawings. 
    • Familiarity with EMI/EMC design considerations in packaging. 
    • Bonus: Experience with Arcadia harness design tool. 

    Team Structure 

    • Individual contributor; collaborate with other teams and individuals, as necessary

    Required Experience

    • 5+ years of experience in mechanical packaging of high-voltage systems for automotive or related industries

    Educational Requirements

    • Bachelor’s degree (or higher) in Mechanical Engineering or related field

    Salary + Benefits 

    • Market competitive compensation package
    • Stock option grants 
    • Fully funded benefits package for employee + dependents
    • Generous Flexible Time Away policy 

    Numbers & Facts

    LocationCarlsbad, California

    Skills

    • 3D Modelingunmatched
    • Automotive Industryunmatched
    • CAD/CAM (Computer-Aided Design/Computer-Aided Manufacturing)unmatched
    • CATIA CADunmatched
    • Circuit Componentsunmatched
    • Electrical Componentsunmatched
    • Electrical Engineeringunmatched
    • Electrical Wiringunmatched
    • Electricityunmatched
    • Electromagnetic Compatibilityunmatched
    • Electromagnetic Interference (EMI)unmatched
    • Electromagnetic Interference Mitigationunmatched
    • High Voltage (HV)unmatched
    • Materials Managementunmatched
    • Mechanical Designunmatched
    • Mechanical Engineeringunmatched
    • Network Routersunmatched
    • Performance Tuning/Optimizationunmatched
    • Printed Circuit Board (PCB)unmatched
    • Product Packagingunmatched
    • Safety Trainingunmatched
    • Schematicsunmatched
    • Systems Engineeringunmatched
    • Technical/Engineering Designunmatched
    • Thermal Managementunmatched

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