About RivianRivian 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 SummaryThe role is to develop physics based/semi-empirical/empirical mathematical models to correlate the battery physics to cell level and eventually the pack level performance for various usage conditions. More over, the candidate is expected to apply the understanding of physics to define cell capability limits for fast charging, regen currents, discharge currents etc to support various decisions from cell celection to battery controls algorithm development.ResponsibilitiesDevelop electrochemical models such as- porous electrode models/reduced order models/equivalent circuit models, to estimate battery electrical and electrochemical response under different usage conditions from the automotive perspectiveApply physics-based models to develop fast charge profiles, regen current limits, discharge limits at the cell and potentially pack level.

Develop semi-empirical tools based on battery physics which can be used to quickly estimate battery performance, design battery limits for newer cells without detailed datasets.Develop models to investigate the effects of temperature gradients on current distributions within cells and at the pack level.Guide experiments to develop optimal test procedures (at cell, module, and pack level) to extract the information to support model calibration and continuously improve model accuracy and to minimize the resource utilization.

Use statistical tools to connect cell level models to pack level incorporating cell-to-cell variations and other pack level effects.Use physics-based model to guide battery degradation modeling and connecting vehicle usage to battery life/warrantyDrive the decision for cell selection (chemistry and design) and system design based on the modeling and test results.Support electrical and thermal controls teams in controls development to meet the battery life targets.

Define pathways to improve cell/pack design with enhanced performance and lifetime; develop intellectual property for Rivian's battery cell technology.Review academic literature of lithium-ion cells and beyond, to support advancement of Rivian's battery cell technology.Qualifications Must have:PhD with a focus on battery modeling with Industrial experience (min 2 years) on battery degradation modeling.

Experience of developing porous electrode models for the automotive/energy storage applications, such as developing fast charge protocol is a plus, understanding regen limits etc.Awareness about Statistical Methods to account for factors such as cell-to-cell variation etc. to connect the cell level models to the pack level models.

Familiarity with important considerations while connecting cell models to pack models.Strong optimization skills and numerical skills.Experience in MATLAB/Simulink/COMSOL is necessary.

Excellent communication skills. Preferred:Experience with data driven models/machine learning skills is a plus.Familiarity with battery life model development is a plus.

Experience with MSMD electrochemical-mechanical-thermal models is a plus.Pay DisclosureSalary Range Rate for California Based Applicants: $150,000-$173,000 (actual compensation will be determined based on experience, location, and other factors permitted by law).Benefits Summary: Rivian provides robust medical/Rx, dental and vision insurance packages for full-time employees, their spouse or domestic partner, and children up to age 26.

Coverage is effective on the first day of employment, and Rivian covers most of the premiums. Equal OpportunityRivian 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 candidateaccommodations@rivian.com.Candidate Data PrivacyRivian 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. Please note that we are currently not accepting applications from third party application services.Job type: FULL TIMECategories: Mechanical & Electrical Engineering.