Sr Engineer, Mechanical Design - High Voltage EV Systems Carlsbad, California | Engineering | Full-time 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. Youll work closely with electrical and systems engineers to ensure that mechanical packaging solutions meet demanding electrical, thermal, and safety requirements. What youll do 3 Package high-voltage (400-800 V) automotive systems, including circuit board assemblies, busbars, harnesses, and power distribution units. 3 Develop dense, compact layouts that optimize thermal performance, dielectric strength, clearances/creepage, and long-term reliability. 3 Apply a working knowledge of dielectric properties of materials, thermal management, and material creep to ensure safe, durable designs. 3 Collaborate with electrical engineers on component placement, routing, and packaging trade-offs. 3 Incorporate EMI/EMC mitigation strategies into packaging solutions. 3 Produce detailed 3D CAD models and 2D drawings (CATIA preferred; willingness to learn required). 3 Support harness routing and packaging using Arcadia (or learn quickly on the job). 3 Participate in design reviews and work closely with suppliers to ensure manufacturable solutions. 3 Hands on assembly of the designs for proving out design and creating work instructions. Qualifications 3 Proven track record in packaging 400-800 V EV components (circuit board assemblies, busbars, harnesses, distribution units). 3 Read and understand system schematics and wiring diagrams. 3 Proficiency in 3D CAD tools (CATIA preferred) with ability to deliver production-ready models and drawings. 3 Familiarity with EMI/EMC design considerations in packaging. 3 Bonus: Experience with Arcadia harness design tool. Team Structure 3 Individual contributor; collaborate with other teams and individuals, as necessary Required Experience 3 5+ years of experience in mechanical packaging of high-voltage systems for automotive or related industries Educational Requirements 3 Bachelors degree (or higher) in Mechanical Engineering or related field Salary + Benefits 3 Market competitive compensation package 3 Stock option grants 3 Fully funded benefits package for employee + dependents 3 Generous Flexible Time Away policy