Staff 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 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 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. Responsibilities Model solid components and assemblies in Power Electronics and Battery Enclosure 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 Responsible 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 drawings, iterating designs from proof of concept, prototype, to production Generate assembly illustrations using CATIA and other office tools to help engineers establish proper assembly processes for DFA Knowledge of BOM structure management, submitting components for release into ENOVIA PLM to support Design Release activities Qualifications Minimum 5 years of experience using Catia V5 or V6 preferred. Experience in modeling die-casting, sheet metal stamping, and plastic injection molding from "clean sheet" for Electronic Packaging designs. Employ "First Principles" to simplify complex systems into fundamental Free-Body Diagrams to resolve key mechanical failure points. Experience and aptitude in prototype CNC machining, injection molding, die casting, sheet metal design, wiring harness design, and assembly Knowledge of mechanical & electrical constraints for PCBAs involving collaboration with Packaging and Electrical Engineers Experience in ENOVIA Product Lifecycle Management, block build changes, and BOM Structure. Technical knowledge of various quick-turn prototyping 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 Pay Disclosure The salary range for this role is USD 137,800-172,200 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 information about benefits is available at rivianbenefits.com. You can apply for this role through careers.rivian.com (or through internal-careers-rivian.icims.com if you are a current employee). This job is not expected to be closed any sooner than May 18th, 2026. Equal Opportunity Rivian is an equal opportunity employer and complies with all applicable federal, state, and local fair employment practices laws. All qualified applicants will receive consideration for employment without regard to race, color, religion, national origin, ancestry, sex, sexual orientation, gender, gender expression, gender identity, genetic information or characteristics, physical or mental disability, marital/domestic partner status, age, military/veteran status, medical condition, or any other characteristic protected by law. Rivian is committed to ensuring that our hiring process is accessible for persons with disabilities. If you have a disability or limitation, such as those covered by the Americans with Disabilities Act, that requires accommodations to assist you in the search and application process, please email us at Candidate Data Privacy Rivian may collect, use and disclose your personal information or personal data (within the meaning of the applicable data protection laws) when you apply for employment and/or participate in our recruitment processes ("Candidate Personal Data"). This data includes contact, demographic, communications, educational, professional, employment, social media/website, network/device, recruiting system usage/interaction, security and preference information. 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