Rivian · 19 hours ago
Sr. Battery Cell Modeling Engineer
Tustin, CA, US
Full-time
Onsite
Senior Level
$108K/yr - $135K/yr
5+ years expRivian is an automotive company focused on electric vehicles, and they are seeking a Sr. Battery Cell Modeling Engineer to advance their cell-level reduced-order modeling capabilities. The role involves developing and validating performance models for battery cells, optimizing thermal management systems, and enabling advanced battery management systems.
AutomotiveElectric VehicleManufacturingTransportation
Responsibilities
Lead the development and validation of performance models for battery cells, with a specific emphasis on their application in battery system and control design
Contribute to the development of accurate models that capture the transient behavior of cells under various operating conditions
Develop Robust Control Algorithms: Predicting cell behavior in real-time allows for the design of effective control strategies for temperature regulation, voltage balancing, and state-of-charge estimation
Optimize Thermal Management Systems: Simulating heat generation and dissipation within cells enables the design of efficient cooling systems that prevent thermal runaway and extend cell life
Improve Voltage Control: Modeling voltage dynamics allows for the development of precise voltage control algorithms that enhance cell performance and prevent overcharge/overdischarge
Enable Advanced Battery Management Systems (BMS): Accurate models provide the foundation for advanced BMS functionalities, such as state estimation, fault detection, and predictive maintenance
Develop cell performance models including equivalent circuit models and reduced order electrochemical-thermal models at different SOH, SOC, and temperatures
Analyze the test data and develop simplified models to mimic various aging/performance data sets that can be used in controls algorithms
Develop innovative numerical techniques to improve speed and accuracy of model and guide design of experiments for optimal utilization of resources
Work with battery systems and software engineers to integrate models in SOC, SOH, SOP algorithms software
Work with thermal modeling engineers to integrate battery thermal behavior especially the non-uniformity in the temperature distribution within the battery pack and support improvements in the battery thermal management system
Work with vehicle and battery systems engineers and model to decompose vehicle level requirements to cell level requirements
Qualification
Required
M.S. in applied mathematics, physics, mechanical engineering, chemical engineering, or a closely related field; PhD preferred
5+ years of relevant experience in modeling and simulation of complex physical systems, with a significant background in lithium ion batteries
Deep understanding of reduced order battery modeling techniques, including equivalent circuit modeling and advanced fitting and optimization algorithms
Strong expertise in lithium-ion battery operating principles, including charge transport, reaction kinetics, heat generation mechanisms, and the impact of cell design and usage conditions on performance, safety, and lifetime
Familiarity with battery test methods and practices, including instrumentation, data acquisition, and data analysis
Excellent communication skills, with a track record of driving alignment across cross-functional teams through clear written and verbal communication of complex technical topics
Benefits
Paid vacation
Paid sick leave
Life insurance
Medical insurance
Dental insurance
Vision insurance
Short-term disability insurance
Long-term disability insurance
401(k) Plan
Employee Stock Purchase Program
Company
Rivian
Rivian is an automotive technology company that develops products and services to advance the shift to sustainable mobility.
10001+ employees
H1B Sponsorship
Rivian has a track record of offering H1B sponsorships. Please note that this does not
guarantee sponsorship for this specific role. Below presents additional info for your
reference. (Data Powered by US Department of Labor)
Distribution of Different Job Fields Receiving Sponsorship
Represents job field similar to this job
Trends of Total Sponsorships
2025 (38)
2024 (70)
2023 (54)
2022 (79)
2021 (21)
Funding
Current Stage
Public CompanyTotal Funding
$21.93BKey Investors
Volkswagen GroupUS Department of EnergyIllinois Department of Commerce & Economic Opportunity
2025-06-30Post Ipo Equity· $1B
2024-11-25Post Ipo Debt· $6.6B
2024-05-02Grant· $827M
Leadership Team
Robert Scaringe
Chief Executive Officer
Claire McDonough
Chief Financial Officer
Recent News
2026-01-24
2026-01-20
2026-01-19
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