Mechanical Design Engineer

About Rivian Rivian is on a mission to keep the world adventurous forever. This goes for the emissions‑free Electric Adventure Vehicles we build, and the curious, courageous souls we seek to attract.

As the Staff Mechanical Design Engineer, you will have a critical design role that includes modeling, release, and integration of assemblies within Power Electronics sub‑systems. Specifically, you will be responsible for solid modeling design that includes plastic injection moldings, die‑castings, and sheet metal components. You will work with cross‑functional teams such as Vehicle Architecture, Manufacturing, and Electrical Engineering to design components per requirements and work collaboratively with suppliers to ensure high‑volume production.

• Model solid components and assemblies in Power Electronics packaging using CATIA V6
• Design enclosures and mechanical assemblies for Power Electronics that meet thermal, environmental, and EMC requirements
• Create 2D prints of all the components by applying geometric dimensioning and tolerancing (GD&T)
• Work with DREs (Design Release Engineer) to bring the mechanical packaging concepts to high‑volume production parts
• Assist engineers with executing 3D packaging studies of various design concepts, and work with other engineers/designers in different functional teams
• Participate in production manufacturing DFMs with suppliers and DREs, optimizing for high‑volume manufacturing, while meeting all performance targets
• Make necessary updates to existing 3D models and 2D prints
• Generate assembly illustrations using CATIA and other office tools to help engineers establish proper assembly processes
• Submit components into ENOVIA PLM to support Design Release activities

• Bachelor's degree in mechanical or electrical engineering or a related discipline. Master’s degree preferred.
• Minimum 5 years of experience using CATIA V5 or V6 preferred
• Experience in modeling die‑casting, sheet metal stamping, and injection molded plastics from “clean‑sheet” for Electronic Packaging designs
• Experience and aptitude in CNC machining, injection molding, die casting, sheet metal design, wiring harness design, and assembly
• Knowledge of mechanical constraints and requirements for PCBAs, involving collaboration with Electrical Engineers
• Experience in ENOVIA Product Lifecycle Management, block build changes, and BOM Structure
• Technical knowledge of various prototype and production tool manufacturing
• Extensive experience using GD&T (understanding, reading, and applying)
• Proficient with Microsoft Office apps (Excel, PowerPoint, Excel) and Google Workspace products
• Detail‑oriented, self‑motivated, and able to work in a fast‑paced environment
• Willing to work flexible hours and passionate about getting assignments done on time
• Experience working in automotive and start‑up environment is a plus

The salary range for this role is USD 137,000‑172,200 for Southern California based applicants. This is the lowest to highest salary we in good faith believe we would pay for this role at the time of this posting. An employee’s position within the salary range will be based on several factors, including, but not limited to, specific competencies, relevant education, qualifications, certifications, experience, skills, geographic location, shift, and organizational needs.

The successful candidate may be eligible for annual performance bonus and equity awards.

We offer a comprehensive package of benefits for full‑time and part‑time employees, their spouse or domestic partner, and children up to age 26, including but not limited to paid vacation, paid sick leave, and a competitive portfolio of insurance benefits including life, medical, dental, vision, short‑term disability insurance, and long‑term disability insurance to eligible employees. You may also have the opportunity to participate in Rivian’s 401(k) Plan and Employee Stock Purchase Program if you meet certain eligibility requirements.

Full‑time employee coverage is effective on their first day of employment. Part‑time employee coverage is effective the first of the month following 90 days of employment. More…