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Mechanical Design Engineer, Energy Storage

Redwood Materials

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  1. Why do you want to join Redwood Materials?
  2. What is your experience with Supply chain? Tell me one thing you learned the hard way.
  3. Tell me about a hard bug you tracked down. How did you find the cause?
  4. How do you decide what to test, and what does good code review look like to you?
  5. Describe a time a deadline forced a trade-off in quality. What did you choose and why?

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About Redwood Materials

Redwood Materials was founded in 2017 by JB Straubel, co-founder and former CTO of Tesla, on a simple but radical idea: the critical minerals powering the energy transition already exist. They just need to come back. Today Redwood is the largest lithium-ion battery recycler in North America — recovering, refining, and redeploying critical minerals from end-of-life batteries back into the supply chain. On the energy side, Redwood has deployed the largest second-life battery project in the world, delivering power to AI data centers in months rather than years using proprietary energy architecture engineered entirely in-house. The company is profitable, the market it operates in is projected to grow 20 to 50 times over the next decade, and Redwood is the only company with the supply chain, the technology, and the operational scale to lead it.

Mechanical Engineer, Energy Storage

You will be an early member of a new engineering team, taking a hands-on role in the design, development, and integration of a new high-power electromechanical product line at Redwood. This position starts as a senior individual contributor, where you'll be responsible for designing critical mechanical components and systems related to high power electronics, including thermal management, harnessing, enclosures, structures, and reliability while also collaborating closely with electrical, software, and systems engineering teams. As the product builds momentum, you will be instrumental in building and leading a mechanical engineering team, setting the foundation for scaling our product into high volume manufacturing. 

The ideal candidate is highly self-driven, adaptable to a startup environment, and eager to take on both technical and leadership challenges. You’re a leader and a doer, excited about working in a dynamic, fast-paced setting, and want to shape the mechanical engineering function within a new department at Redwood. 

If necessary, we will adjust the job level to suit your experience and responsibilities. 

Responsibilities will include:  

 Desired Qualifications:  

 

In accordance with California pay transparency laws, the salary range for this position is listed below. Actual compensation may vary based on a variety of factors, including experience, education, and skills. 

California Pay Range:
$125,000—$165,000 USD

The position is full-time. Compensation will be commensurate with experience.

 

We collect personal information (PI) from you in connection with your application for employment with Redwood Materials, including the following categories of PI: identifiers, personal records, professional or employment information, and inferences drawn from your PI. We collect your PI for our purposes, including performing services and operations related to your potential employment. If you have additional privacy-related questions, please contact us at privacy@redwoodmaterials.com.

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Listed on greenhouse · posted 2026-03-26. ApplySarthi collects openings and links to application pages; the role is advertised by Redwood Materials, not by us.