---
title: 'Senior Electrical Hardware Test Engineer, Energy Storage at Redwood Materials'
canonical: 'https://feeny.ai/job/senior-electrical-hardware-test-engineer-energy-storage-redwood-materials-san-trey1td3r6a1'
type: 'job'
last_seen: '2026-10-26'
---

# Senior Electrical Hardware Test Engineer, Energy Storage at Redwood Materials

- **Company:** Redwood Materials
- **Location:** San Francisco, CA
- **Compensation:** $145k–$192k
- **Posted:** 2026-10-20
- **Last confirmed live:** 2026-10-26
- **Apply:** https://boards.greenhouse.io/redwoodmaterials/jobs/6220784004?gh_jid=6220784004

## Job description

## 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.

Position Summary:

Join Redwood Materials to validate the high-voltage power electronics behind the world’s energy storage systems. You’ll design and run validation tests on components and assemblies operating at 400–2000VDC and 480–800VAC. You’ll work directly from schematics, Altium layouts, and datasheets to understand switching topologies, gate drive, isolation, protection, and thermal behavior, then use that understanding to build sharper tests. When something fails, you’ll probe the circuit, isolate the fault, and drive root cause to the component level. You’ll design and source custom PCBAs for characterization, build electrical-focused test infrastructure with mechanical and software elements, and write Python tools to automate testing and analyze data. Working alongside design, reliability, and abuse engineers on FMEAs and test plans, you’ll turn complex data into design and process improvements that ship. If you thrive at the bench, love finding the real cause of a failure, and want your work to matter from day one, this is your role.

Essential Duties and Responsibilities

- Design, set up, and execute validation tests on high-voltage power electronics components and assemblies
- Read and work directly from schematics, Altium layouts, and datasheets to understand circuit behavior and inform test design
- Debug and diagnose hardware hands-on — probe circuits, isolate faults, and drive root cause investigations to the component level
- Design, fabricate, and source custom PCBAs to support component-level characterization and test needs
- Specify and build supporting test infrastructure spanning electrical, mechanical, and software domains, with an emphasis on electrical scope
- Develop and maintain test automation and data analysis tools using Python
- Collaborate with cross-functional teams (design, reliability, and abuse engineers) to generate FMEAs and test plans; analyze complex test data and drive design and process enhancements

Skills, Knowledge, and Abilities

- Master's degree in Electrical Engineering, Mechatronics, or a related field
- 5+ years of technical experience in test engineering, hardware validation, or power electronics development
- Hands-on experience with high-voltage systems (400–2000VDC and 480–800VAC)
- Proficiency with Altium or similar EDA tools; fluency reading schematics, layouts, and component datasheets
- Comfort at the bench with oscilloscopes, probes, and general lab instrumentation
- Working knowledge of power conversion — switching topologies, gate drive, isolation, protection, and thermals
- Demonstrated experience with root cause and failure analysis — tracing a failure to a component or mechanism, not just documenting the symptom
- Proficiency in object-oriented programming, Python preferred
- Excellent communication and interpersonal skills; ability to engage effectively with stakeholders at all organizational levels, including executives
- A get-it-done attitude; no job is too big or too small

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: $145,000—$192,000 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.

## About Redwood Materials

## Company Overview
- **One-liner**: Redwood Materials recycles lithium-ion batteries to recover critical minerals and deploys large-scale energy storage systems, building a domestic circular supply chain for batteries.
- **Entity Type**: Private (Late-stage; Series E closed at $425M in October 2025)
- **Headquarters**: Carson City, Nevada, USA (with campuses in Northern Nevada, South Carolina, and an R&D center in San Francisco)
- **Founded**: 2017
- **Founders**: JB Straubel (former Tesla CTO)

## Core Business
- **Primary industry**: Battery recycling, critical materials production, and energy storage
- **Target customers**: B2B – automotive OEMs, data center operators, utilities, and grid-scale energy storage buyers
- **Mission/purpose**: “Securing U.S. critical materials. Powering America’s energy future.” – building a resilient domestic supply chain for batteries and enabling the energy transition.

## Products & Services
- **Critical Materials Production**: Recovers lithium, nickel, cobalt, and copper from end-of-life batteries (recycling) and produces cathode active material at scale. [redwoodmaterials.com](https://www.redwoodmaterials.com/)
- **Redwood Energy**: Designs, integrates, and deploys large-scale energy storage systems (BESS) for data centers and the grid, using both new and repurposed batteries. [redwoodmaterials.com](https://www.redwoodmaterials.com/)
- **Battery Bin**: Consumer-facing recycling program launched in December 2025 to collect end-of-life batteries. [redwoodmaterials.com/about/](https://www.redwoodmaterials.com/about/)

## Market Standing
- **Valuation**: ~$6 billion (as of October 2025, per Wikipedia)
- **Key Metric**: Total funding raised >$1.4B (over $1B in 2023 plus $425M Series E in 2025). Annual revenue not publicly disclosed.
- **Notable Investors/Partners**: Partners include Volkswagen Group of America, Panasonic, GM/Ultium Cells, Volvo, Amazon, Toyota, Southern Company, BMW of North America, Crusoe, Lime, Caterpillar, Isuzu. [redwoodmaterials.com](https://www.redwoodmaterials.com/)
- **Growth Signals**: 
  - Opened South Carolina recycling campus (2025) and SF R&D center (2025)
  - Launched Redwood Energy storage division (2025)
  - Expanded into Europe (2022)
  - Recognized as Fast Company’s World’s 50 Most Innovative Companies (2024, 2026) and Time100 Climate (2024)
  - Active job postings: 79 (as of mid-2026), with monthly growth of +83.7% [linkedin.com](https://www.linkedin.com/company/redwood-materials)

## Competitive Advantages
- **Technology moat**: Recovers >95% of metals (nickel, cobalt, lithium, copper) from end-of-life batteries, creating a low-cost domestic source of critical materials.
- **Vertical integration**: Combines recycling, refining, cathode production, and energy storage deployment under one roof.
- **Strategic partnerships**: Deep relationships with nearly every major automotive OEM and energy companies, ensuring feedstock and offtake.
- **First-mover in U.S. battery circularity**: One of the largest domestic sources of critical minerals, reducing reliance on foreign supply chains.

## Strategic Focus
- Scale domestic battery material production and energy storage manufacturing to meet U.S. grid and EV demand.
- Expand Redwood Energy as a standalone business unit for utility and data center storage.
- Grow consumer recycling programs (Battery Bin) and deepen partnerships with automakers and energy companies.
- Continue R&D in advanced battery chemistries and recycling processes at the San Francisco innovation center.

## Why Work Here
- **Mission-driven culture**: Employees are motivated by building a resilient U.S. energy future and solving climate challenges.
- **Pioneering environment**: Described as “pioneers, innovators, and collaborators” working on chemistry, materials science, automation, and advanced equipment design. [redwoodmaterials.com/join/](https://www.redwoodmaterials.com/join/)
- **Locations**: Multiple campuses – Tahoe (Northern Nevada), Carolina (South Carolina), and downtown San Francisco R&D center.
- **Growth opportunities**: Rapid scaling with 79+ open roles across engineering, operations, EPC, software, and business functions. Top talent sources include Tesla (207 alumni), Panasonic, Rivian, and Chewy.
- **Work style**: Hybrid/office presence expected at campuses; culture emphasizes making difficult decisions and implementing design constraints to drive impact.

## Sources
1. [redwoodmaterials.com](https://www.redwoodmaterials.com/)
2. [redwoodmaterials.com/about/](https://www.redwoodmaterials.com/about/)
3. [redwoodmaterials.com/join/](https://www.redwoodmaterials.com/join/)
4. [linkedin.com](https://www.linkedin.com/company/redwood-materials)
5. [wikipedia.org](https://en.wikipedia.org/wiki/Redwood_Materials)

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