Mechanical Engineer, Electric Machine Design

Position: Staff Mechanical Engineer, Electric Machine Design
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 a company, we constantly challenge what's possible, never simply accepting what has always been done. We reframe old problems, seek new solutions and operate comfortably in areas that are unknown.

Our backgrounds are diverse, but our team shares a love of the outdoors and a desire to protect it for future generations. Role Summary In this position, you will be working with the Electric Machine Mechanical Design team on the next generation of electric motor components for Rivian's Electric Adventure Vehicles. You will support design, release, testing, and assembly of motor subcomponents and motor assemblies by completing packaging studies, concept development, prototype builds, releasing production parts along with associated assembly documentation for systems that are currently in-production as well as for future products currently in-development.

Responsibilities Design sub-systems and components for electric motors and supporting mechanical structures with hands-on experiments & testing Utilize CATIA V6 for detailed 3D part generation/revision and 2D drawing layout, ensuring design completeness and accuracy utilizing GD&T Conduct stack-up analyses for parts and mating interfaces to inform components' GD&T and manufacturing requirements Author motor component technical specifications, design validation plans (DVPs), test plans, and statements of work (SOWs) for internal and external use Manage suppliers with DFMA studies, recurring meetings, and open issue lists to ensure cost efficiency, quality, manufacturability, and reliability Troubleshoot, lead root cause analysis studies, and determine appropriate containment actions for quality and manufacturing issues with travel to vendors and Rivian plant(s) Cross-functional collaboration with various teams across Rivian to support R&D Design of tooling for testing and assembly, along with other development activities Ensure timely completion of project design deliverables, including designs, drawings, analyses, and other documentation as required.

Qualifications 7+ years of experience working in a fast-paced environment on the mechanical design of complex components Formal education in mechanical engineering or a similar discipline; B.S. minimum Proficiency with major 3D CAD software package; CATIA V6 experience preferred Professional experience with applying GD&T (ASME Y14.5), conducting stack-up analyses (linear & radial), and determining realistic tolerancing limits based on material and manufacturing methods Ability to perform structural hand-calculations and FEA studies Past work leading root cause analysis efforts and determining effective containment actions Knowledge of rapid prototyping, high-volume manufacturing processes, materials selection, and supply chains Hands-on experience with lab tools and measurement equipment Knowledge in DFMEA, DVP&R, and PFMEA Strong engineering fundamentals in the areas of materials, mechanics, dynamics, design for manufacturability, tolerancing, and high-precision metrology High-energy, open-minded attitude willing to quickly iterate on designs and expand skillset as needed A wide degree of creativity and latitude with minimal supervision is expected Pay Disclosure The salary range for this role is USD ,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 information about benefits is available at  You can apply for this role through  (or through inte if you are a current employee). This job is not expected to be closed any sooner than February 6, 2026.

Equal Opportunity Rivian is an equal opportunity employer and complies with all applicable federal, state,…