Sr. Motor Mechanical 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

In this role, you will collaborate with the Electric Machine Mechanical Design Team to develop current and next-generation electric motors for Rivian's Electric Adventure Vehicles. Your responsibilities will include generating motor concepts, designing components, creating drawings, developing tooling, supporting prototyping, conducting tests, and assisting with production.


Responsibilities

• Design sub-systems and components for various electric drive units, including wound field motor, permanent magnet motor, and motor mechanical structural components.
• Generate & revise detailed 3D CAD models and 2D drawings of electro-mechanical designs at a component and motor sub-system level using CATIA V6.
• Review designs & drawings for completeness and accuracy.
• Develop detailed work instructions, assembly guidance, and related documentation.
• Analyze and verify preliminary and detailed designs with analytical calculations and numerical (FEA) as required.
• Collaborate and manage suppliers with DFM, DFA, and open issues lists to ensure on-time delivery of parts and quality conformance according to the acceptance criteria.
• Support developing component technical specifications, DVP&Rs, test & validation plans, and Statements of Work (SOW) as required.
• Design of related assembly tooling and fixtures for early prototype development and testing.
• Ensure timely completion of project deliverables, including designs, drawings, analyses, and other documentation as required.
• Lead and support developmental activities of various laboratory work from assembly builds to test and validation with a hands-on approach.
• Ability to travel to suppliers and Rivian manufacturing plants to support with experimental studies, root cause identification, and resolution.
• Cross-functional collaboration with multi-disciplinary teams across Rivian.
• Support root cause analysis studies to identify issue origin, determine appropriate containment plan, and permanent resolution for the issue.

Qualifications

• 5+ years of experience in mechanical design of complex systems and components, in a fast-paced environment.
• Formal education in Mechanical Engineering or a similar discipline; B.S. minimum, MS Preferred.
• Proficiency with 3D CAD modeling; CATIA V6 experience preferred.
• Professional experience with application of 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 initial FEA studies to support sizing, loading cases, and design feasibility.
• Proven ability to collaborate cross-functionally with technicians, manufacturing, process, design, and integration teams to solve problems.
• Knowledge of rapid prototyping, high-volume manufacturing processes, materials selection, and supply chain.
• Hands-on experience with lab tools, equipment, and measurement tools.
• Strong engineering fundamentals in the areas of materials, mechanics, dynamics, design for manufacturability, tolerancing, and high precision metrology.
• Experience with leading root cause analysis efforts, determining effective containment actions.
• Knowledge in DFMEA, DVP&R, and PFMEA.
• High-energy, open-minded attitude, willingness to quickly iterate on designs, and expanding skillsets as needed.

Pay Disclosure

The salary range for this role is USD 107,800-142,900 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 February 6, 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 and Technology

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. Rivian may use your Candidate Personal Data for the purposes of (i) tracking interactions with our recruiting system; (ii) carrying out, analyzing and improving our application and recruitment process, including assessing you and your application and conducting employment, background and reference checks; (iii) establishing an employment relationship or entering into an employment contract with you; (iv) complying with our legal, regulatory and corporate governance obligations; (v) recordkeeping; (vi) ensuring network and information security and preventing fraud; and (vii) as otherwise required or permitted by applicable law.

Rivian may share your Candidate Personal Data with (i) internal personnel who have a need to know such information in order to perform their duties, including individuals on our People Team, Finance, Legal, and the team(s) with the position(s) for which you are applying; (ii) Rivian affiliates; and (iii) Rivian's service providers, including providers of background checks, staffing services, and cloud services.

Rivian may transfer or store internationally your Candidate Personal Data, including to or in the United States, Canada, the United Kingdom, and the European Union and in the cloud, and this data may be subject to the laws and accessible to the courts, law enforcement and national security authorities of such jurisdictions.

How We Use AI in Our Hiring Process: To ensure transparency, we want candidates to know that Rivian uses iCIMS Talent Cloud Artificial Intelligence (TCAI) and AI-enabled tools to assist with screening, reviewing, organizing and highlighting profiles and applications that match the key requirements for each role.

AI does not make hiring decisions: Qualified candidate applications are reviewed by a member of our team, and all decisions throughout the process are made by humans. We use AI to support efficiency and consistency, not to replace human judgment. We are committed to a fair, thoughtful, and equitable experience for every candidate.

Participation in AI profile matching is entirely voluntary. If you prefer that your profile not be used in this process, you can opt out at any time. Opting out means your profile will be excluded from automated matching and will not be surfaced for additional roles through this system. Your current application remains active and will not be affected in any way.

Please note that we are currently not accepting applications from third party application services.