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Battery Modeling Internship Jobs in California (NOW HIRING)

Estes Energy

2026 Fall Engineering Intern

San Francisco, CA · On-site

$19.75 - $25.50/hr

Fall 2026 (Sept-Dec, dates flexible) · Type: Full-time or part-time internship About Estes Energy ... We work on transforming advanced materials into battery systems for industrial and commercial ...

Parallel Systems

Mechanical Engineer

Los Angeles, CA · On-site

$125K - $150K/yr

Parallel Systems is pioneering autonomous battery-electric rail vehicles designed to transform ... Create and maintain CAD models, engineering drawings, and release packages for fabricated and ...

Parallel Systems

Mechanical Engineer

Los Angeles, CA · On-site

$125K - $150K/yr

Parallel Systems is pioneering autonomous battery-electric rail vehicles designed to transform ... Create and maintain CAD models, engineering drawings, and release packages for fabricated and ...

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Battery Modeling Internship information

What is a battery modeling internship?

A Battery Modeling Internship is a temporary position where students or recent graduates work with experts to develop and analyze mathematical models that predict the performance, behavior, and lifespan of batteries. Interns typically use software tools and scientific methods to simulate how batteries operate under different conditions. This experience helps interns gain practical skills in battery technology, data analysis, and computational modeling, which are valuable in the energy storage and electric vehicle industries.

What is the difference between Battery Modeling Internship vs Battery Design Engineer?

AspectBattery Modeling InternshipBattery Design Engineer
Required CredentialsEnrolled in or recent graduate in Electrical Engineering, Mechanical Engineering, or related fieldsBachelor's or Master's in Electrical, Mechanical, or Chemical Engineering; relevant certifications
Work EnvironmentResearch labs, corporate R&D centers, or university settingsDesign labs, manufacturing facilities, R&D departments
Industry UsageUsed for simulation, analysis, and testing of battery modelsInvolved in designing, prototyping, and testing battery systems
Common Search/ComparisonYesNo

The Battery Modeling Internship focuses on developing and analyzing battery models through simulations, often for research or testing purposes. In contrast, the Battery Design Engineer is responsible for creating and optimizing actual battery systems and components. While both roles require a strong background in engineering and familiarity with batteries, internships are more research-oriented, whereas design roles involve hands-on development and manufacturing.

What types of projects or tasks can I expect to work on during a battery modeling internship?

As a Battery Modeling Intern, you will typically work on projects involving the simulation, analysis, and optimization of battery systems using specialized software tools. Your daily tasks may include developing mathematical models, analyzing battery performance data, and assisting with experimental validation of models. Collaboration with research scientists, engineers, and other interns is common, providing opportunities to contribute to multidisciplinary teams. These experiences help you build practical skills and gain valuable exposure to cutting-edge battery technologies in both academic and industry settings.

What are the key skills and qualifications needed to thrive as a battery modeling intern, and why are they important?

To thrive as a Battery Modeling Intern, you need a strong background in electrochemistry, mathematics, and engineering, often supported by coursework or a degree in chemical, mechanical, or electrical engineering. Familiarity with simulation tools such as MATLAB, COMSOL Multiphysics, or Python, as well as knowledge of battery management systems and modeling software, is typically required. Critical thinking, problem-solving abilities, and effective teamwork are essential soft skills in this role. These competencies enable accurate battery model development, efficient collaboration on research projects, and innovative solutions to complex energy storage challenges.
What are the most commonly searched types of Battery Modeling jobs in California? The most popular types of Battery Modeling jobs in California are:
What are popular job titles related to Battery Modeling Internship jobs in California? For Battery Modeling Internship jobs in California, the most frequently searched job titles are:
What job categories do people searching Battery Modeling Internship jobs in California look for? The top searched job categories for Battery Modeling Internship jobs in California are:
What cities in California are hiring for Battery Modeling Internship jobs? Cities in California with the most Battery Modeling Internship job openings:
Battery Modeling Internship jobs near you
Infographic showing various Battery Modeling Internship job openings in California as of July 2026, with employment types broken down into 96% Full Time, and 4% Part Time. Highlights an 98% Physical, and 2% Remote job distribution.

Battery Safety Simulation & Test Engineer

Joby Aviation

San Carlos, CA • On-site

$134K - $184K/yr

Full-time

Medical, Life, Retirement, PTO

Re-posted 13 days ago

Job description

Company Overview
Imagine a piloted air taxi that takes off vertically, then quietly carries you and your fellow passengers over the congested city streets below, enabling you to spend more time with the people and places that matter most. At Joby, we've been working to make that dream a reality since 2009 and we're now in the final stages of certifying our aircraft with the FAA. With plans to launch our aircraft in the US and Dubai, we're now scaling manufacturing and preparing for the launch of our commercial service.
Overview
Joby Aviation is seeking an engineer to help make our batteries the safest in the industry. This person will be a key member of our battery safety engineering effort and drive aspects of our battery pack and vehicle designs through the ownership of simulation, test, and analysis. This person will rely on first principles to push our technology and help define the standards for Joby's eVTOL aircraft. The testing will encompass the full range of abuse (thermal, electrical, and mechanical) of individual cells and full-scale battery packs.
We encourage you to apply if you meet the degree requirements and have relevant industry experience including internships, co-ops, academic research, or project experience.
Responsibilities
  • Develop coupled electrochemical, thermal, and gas-generation cell models to inform design parameters and cell technology roadmaps
  • Perform thermal analysis and simulations (using lumped-sum models, CFD, and multi-physics tools) to evaluate cell, module, and pack-level behavior under abuse scenarios and link conclusions to vehicle-level optimizations
  • Own test planning, design, and execution for battery performance and safety, with a focus on high-voltage and thermal management
  • Correlate simulation results with experimental test data, refining models for accuracy and utility
  • Design, set up, and maintain complex test equipment, including electrical, mechanical, fluid systems, and data acquisition/instrumentation
  • Drive decisions by analyzing and presenting data-driven insights and leading cross-functional efforts across battery, systems, and certification engineering teams
  • Support certification efforts across all programs by conducting tests, maintaining meticulous documentation of test plans, results, and observations

Required
  • BS + 3 years of experience or MS + 1 year of experience in mechanical engineering, thermals, physics, or related field
  • Solid understanding of cell / battery hazards and failure modes (e.g., thermal runaway, electrical shorts, mechanical abuse)
  • Strong problem-solving mindset and foundation in thermodynamics, heat transfer, fluid dynamics, and electrical engineering fundamentals
  • Willingness to get hands dirty and work with team-members on all levels of test execution, from planning to final cleanup
  • Fundamental understanding of sensing and data acquisition principles
  • Great written, verbal, and presentation skills

Desired
  • Advanced degree in a relevant engineering or science field and 5+ years of experience
  • Strong fundamentals in Li-ion cell design, modeling, and testing for both nominal and abuse scenarios
  • Knowledge of li-ion cell technology and experience with battery testing/design
  • Experience working with abuse testing at cell/module/pack levels and familiarity with safety testing standards such as UN 38.3, SAE 2464, RTCA DO-311
  • CAD experience, CATIA preferred
  • Python or other language for data processing and visualization
  • LabVIEW or other language for interfacing with data acquisition hardware
  • Hands-on experience with thermal modeling and simulation tools such as ANSYS Fluent, COMSOL, STAR-CCM+, MATLAB/Simulink, or similar CFD/FEA software

Additional Information
Compensation at Joby is a combination of base pay and Restricted Stock Units (RSUs). The target base pay for this position is $134,100 - $184,300/yr. The compensation package will be determined by job-related knowledge, skills, and experience.
Joby also offers a comprehensive benefits package, including paid time off, healthcare benefits, a 401(k) plan with a company match, an employee stock purchase plan (ESPP), short-term and long-term disability coverage, life insurance, and more.
Joby is an Equal Opportunity Employer.

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