Senior Battery Pack Engineer

  • Los Angeles
  • Advanced Product Development
  • Full Time
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Job Summary

The Advanced Product Development team develops transformative battery designs and novel product concepts to speed global energy decarbonization. Your focus as a Battery Pack Engineer will be on going from component and architecture concepts through in-vehicle PoC/validation of high-performance EV packs based on internal and customer-driven development programs. Beyond that, you’ll lead integrated pack engineering for Our Next Energy’s advanced product concepts, which go beyond batteries alone. You will work on all levels of the design, from high-level system architecture to demonstration and product engineering hand-off.

We are looking for passionate engineers who share our values. Our team is comprised of various integrated disciplines, including mechanical, structural, thermal, electrical, and software. Therefore, collaboration in group settings, ability to solve system integration challenges, and clear communication are valuable to becoming a successful team member.

You should enjoy working on a small team where you will own substantial and critical parts of the final product. We are working on groundbreaking technologies, so you’ll be energetic, adaptable, and a fast learner who can make quick design judgments with limited information. As a founding member of this group, you will also play a crucial role in growing the team to meet continuously evolving challenges.

Essential Duties and Responsibilities

  • Leads advanced engineering pack mechanical fabrication, assembly, and debug activities to ensure successful delivery

  • Designs integration of high-voltage electrical elements including bus bars and power electronics, and ensure electrical isolation of same

  • Identifies areas of risk and work quickly to prototype and mitigate these

  • Engages with component suppliers to specify and acquire quotes

  • Performs 3D design and GD&T drawings of complex parts and assemblies

  • Optimizes designs via analytical, numerical, and/or empirical assessments

  • Integrates seamlessly with both the vehicle and advanced cell architectures

  • Performs self-guided R&D around novel pack structures and mechanical design

  • Performs any additional duties as assigned

Within 3 months you will:

  • Supports design and fabrication of a prototype next-generation battery pack

  • Helps develop test setups to iterate on and validate designs

  • Supports pack safety and thermal design and testing

  • Takes ownership of the design, fabrication, and testing of subsystem components

  • Develops internal design tools and capabilities to accelerate future projects

  • Becomes familiar with the ONE team and established products

Within 6 months you will:

  • Takes ownership of advanced pack mechanical design

  • Collaborates with other system disciplines to plan and execute overall project delivery

  • Guides high-level design discussions for our current and future product concepts

  • Mentors junior engineers on prototyping and best practices

  • Leads prototyping and fabrication of follow-on product concepts

Education and/or Experience

You should be familiar with all, proficient with many, and expert at some of the following, in no particular order:

  • B.S. or M.S. in Mechanical Engineering or similar

  • 2+ years of experience in battery engineering, pack, module, or power electronics design

  • 3D modeling experience using SolidWorks or an equivalent CAD system

  • Hands-on experience in leading hardware designs from conceptual design through proof-of-concept

  • Hands-on experience performing sub-assembly and vehicle-level testing, including test plan ownership and model correlation

  • Experience working in an R&D prototype development environment

  • Familiarity with small-volume manufacturing technologies and methods, and experience working with outside suppliers for same

  • Structural analysis of metals and/or composites, including test data processing, loads derivation and fatigue analyses

  • Thermal management of mechanical and electrical systems

  • Experience with design for challenging environmental conditions in terms of vibration, water intrusion, corrosion, and thermal

  • Strong written/verbal communication and organizational skills

We welcome you to apply even if you don’t match every requirement posted for this role. No one candidate will be a 100% perfect match to our description, so if you are passionate about working on decarbonizing energy and have similar experience to what we are looking for, we encourage you to apply. Diverse backgrounds and experiences promote innovation and our goal is to build a team that encompasses a variety of backgrounds, experiences, and skills.

Physical Demands

The physical demands described here are representative of those that must be met by an employee to successfully perform the essential functions of this job. Reasonable accommodations may be made to enable individuals with disabilities to perform the essential functions.

  • Sit at a desk and work on a computer for prolonged periods of time

  • Walk/move around and/or travel as needed

Work Schedule

  • Full-time 40 hours and generally scheduled Monday through Friday 9am-6pm EST

  • Flexible work schedule and environment, see company policy if applicable.

  • Work schedule to be established with supervisor to ensure Company’s client and business needs are met


Our Next Energy, Inc. is an Equal Opportunity Employer and does not discriminate on the basis of Sex or Gender identity, Mental disability or physical disability, Religion, Age, National origin or ethnicity, Sexual orientation, Marital status, Veteran status or Parental status.

Our Next Energy, Inc. is an Equal Opportunity Employer and does not discriminate on the basis of Sex or gender identity, Mental disability or physical disability, Religion, Age, National origin or ethnicity, Sexual orientation, Marital status, Veteran status or Parental status.

Depending on your specific placement, you may be required to prove that you have received the COVID-19 vaccine or have a valid religious or medical reason not to be vaccinated. ONE is an Equal Opportunity Employer and reasonable accommodations will be considered.