As a Sr. Power Electronics Mechanical Engineer at Rivian, you will lead the mechanical development of next-generation Inverter Modules from concept to production. This role involves designing critical components and collaborating with cross-functional teams to tackle complex packaging challenges. You will work closely with suppliers and internal teams to ensure design integrity and manufacturing alignment. The position is based in Carson, CA, and reports to the Sr. Staff Power Electronics Mechanical Engineer.

• Bachelor's degree in mechanical engineering or related engineering field; Master's preferred.
• Minimum 4 years of professional work experience as an engineer releasing Power Electronics assemblies.
• Extensive experience interfacing and managing external suppliers.
• Knowledge of CATIA V5 or V6 software including part design and assembly design workbenches.
• Experience with fundamental design practices of die casting, sheet metal, and injection molding.
• Knowledge of GD&T per ASME Y14.5.
• Ability to understand electrical and mechanical drawings.
• Understanding and knowledge of ENOVIA Product Lifecycle Management system.
• Experience working in the automotive industry and startup environment preferred.

• Lead the mechanical development of Inverter Modules using CATIA V6/3DEXPERIENCE.
• Design and engineer a wide array of components, including high-pressure die castings and injection-molded plastics.
• Manage the full release cycle of mechanical components using ENOVIA, ensuring data integrity and design maturity.
• Generate and maintain complex Top-Level Assembly Bills of Materials (BOM) with 100% accuracy.
• Drive weekly technical reviews with suppliers to close open design items and manage timelines.
• Act as the primary technical liaison for Supply Chain and Supplier Quality teams.
• Author critical engineering documents, including Component Technical Specifications and detailed assembly manuals.
• Collaborate with Systems team on DFMEAs and develop robust Design Verification test plans.
• Provide on-site support for pre-production lines, including the design of specialized mechanical fixtures.
• Collaborate closely with Manufacturing Engineering to design, validate, and commission the production line.
• Lead troubleshooting efforts for issues arising during prototype builds and scale-up.
• Spearhead the root cause investigation of field failures related to mechanical assemblies.

• Employees at Rivian are often offered comprehensive health, dental, and vision insurance, a 401(k) with company match, ESPP and potential RSU grants, performance bonuses, and generous time off including paid parental and sick leave. Perks can include 24/7 mental-health coaching and therapy, Hinge Health for Anthem enrollees, tuition assistance and professional development, plus on-site food and a wide range of employee discounts on items like computers, mobile phones, home loans, and pet care.