Full-Time

Manufacturing Test Infrastructure Lead Engineer

Energy Storage

Updated on 9/4/2026

Redwood Materials

Redwood Materials

501-1,000 employees

Recycles lithium-ion batteries into materials

Compensation Overview

$175k - $275k/yr

San Francisco, CA, USA

In Person

Bachelor's

Category
Manufacturing Quality & Test (1)
Required Skills
Mechatronics
Software Testing
Data Analysis

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Requirements
  • The position requires a hands-on, proactive attitude and a methodical, analytical approach to problem-solving.
  • Seven or more years of technical experience in manufacturing test engineering or a related role.
  • Two or more years of people management experience.
  • Experience working with high-voltage systems operating at 400–2000 VDC and 480–800 VAC.
  • Deep technical expertise in at least one aspect of test engineering, with comfort working across mechanical, electrical, and software disciplines.
  • Experience working in a high-volume manufacturing environment.
  • Direct experience with battery testers or characterization tools.
  • Experience developing scalable tools, infrastructure, and design practices for test engineering teams.
Responsibilities
  • Design testers to support development of a new product.
  • Design testers for implementation in manufacturing and field settings to screen products.
  • Lead end-to-end system development of functional and end-of-line testers for electromechanical products.
  • Manage a small team of engineers across mechanical, electrical, and software technical scopes.
  • Collaborate with firmware and hardware teams to develop test coverage, define metrics, and align hardware and firmware features for manufacturing-test implementation.
  • Debug and determine the root causes of issues found in manufacturing testing.
  • Design and develop manufacturing test hardware, including functional and system power tests.
  • Lead tester builds and validation efforts such as Gauge Repeatability and Reproducibility and Site Acceptance Testing.
  • Work with firmware and software teams to develop test automation, self-test, and data analysis.
Desired Qualifications
  • A get-it-done attitude and willingness to handle work of varying size and scope.
  • The ability to communicate and interact effectively with stakeholders at all organizational levels, including executives.

Redwood Materials builds a circular supply chain for lithium-ion batteries. It collects end-of-life batteries and manufacturing scraps, recovers most of the valuable minerals using its own processes, and then refines and remanufactures those materials into essential battery components like cathode active materials and anode copper foil, which are sold to battery manufacturers. In 2025 it added Redwood Energy to repurpose used EV batteries into grid-scale energy storage systems. The company differentiates itself through vertical integration across the full value chain—collection, recycling, refining, and remanufacturing—plus a focus on domestically sourced materials, high recovery rates, and partnerships with large automakers and battery makers. Its goal is to create a sustainable, domestic, closed-loop supply of battery materials to support electric vehicles and grid storage while reducing waste and dependence on imported minerals.

Company Size

501-1,000

Company Stage

Late Stage VC

Total Funding

$4.8B

Headquarters

Carson City, Nevada

Founded

2017

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Simplify Jobs

Simplify's Take

What believers are saying

  • March 2026 Crusoe expansion lifted Redwood’s second-life microgrid to 20 megawatts.
  • April 2026 Rivian deployed 10MWh at Normal, proving commercial demand for Redwood Energy.
  • May 2026 Reuters reported Redwood hired ex-Tesla finance chief Deepak Ahuja, sharpening capital discipline.

What critics are saying

  • April 2026 layoffs cut 135 workers, exposing execution strain and cost pressure.
  • Ascend Elements’ 2026 bankruptcy shows battery-recycling economics break fast under volume misses.
  • If AI-storage demand cools, Redwood’s $7 billion valuation faces a brutal rerating by 2027.

What makes Redwood Materials unique

  • JB Straubel’s Tesla pedigree and Nevada integration anchor Redwood’s domestic battery-material moat.
  • Redwood recovers 95% of lithium, nickel, cobalt, and copper from batteries.
  • Redwood Energy’s Pack Manager links recycling, reuse, and storage into one platform.

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Benefits

Health Insurance

Growth & Insights and Company News

Headcount

6 month growth

-2%

1 year growth

0%

2 year growth

0%
StockWatchIndex
Sep 5th, 2026
GM vs. Ford: U.S. defense, energy sectors add to automakers' century-old rivalry

GM vs. Ford: U.S. defense, energy sectors add to automakers' century-old rivalry. September 5, 2026 The GM Defense Infantry Squad Vehicle was engineered to meet U.S. military specifications. It is based on the automaker's off-road Chevrolet Colorado ZR2 midsize truck architecture. But their latest battlegrounds have moved to actual battlefields and the U.S. energy grid. Ford joined GM this year in seeking U.S. military contracts after the Trump administration approached U.S. companies about assisting the military with their expertise in mass manufacturing. The automakers' efforts so far are largely focused on military vehicles, but could grow with time. Simultaneously, both companies are entering the energy storage system, or ESS, market amid an expected growing need related to rising consumer energy costs and data centers. Energy storage systems use a lot of the same underlying technology as electric vehicle batteries to store power for homes, businesses and even utilities. Both markets are viewed by Wall Street analysts as new potential growth areas for the automakers. At one point, it was thought new opportunities might come from all-electric vehicles, but Ford and GM have since lost billions of dollars on those efforts. "They're looking for new verticals," Morningstar The two markets are expected to be small portions of the companies' focus and revenue for the foreseeable future, but they could help the automakers diversify their operations and complement their core businesses as new vehicle sales slow in the U.S. "It'll be hard to move the needle here massively, given the auto business's top line, but it certainly can be helpful," Whiston said. Energy storage. The global ESS market is estimated to grow from $668.7 billion in 2024 to $5.12 trillion by 2034, according to research and consulting firm Global Market Insights. As part of that, the firm expects to see a significant expansion in the U.S. "We're seeing this huge projection of growth, and it's already started growing," Devon Wilson, vice president of sales and marketing at LG Energy Solution's U.S. energy storage division, said during a recent event. "There's a massive amount of just fundamental electricity need within the country." GM and Ford are attempting to capitalize on such expected growth to fill a void. The companies invested billions of dollars in plants to produce battery cells to meet EV demand that didn't materialize. GM's energy business does not currently offer its own ESS, but its military division does and its Ultium Cells joint venture in Tennessee produces cells for its partner LG Energy Solution for storage. Long-term, GM could move further into ESS, including developing next-generation sodium-ion batteries with Denver-based startup Peak Energy. Kurt Kelty, GM's vice president of battery and sustainability, said he believes that technology can reshape grid-scale energy storage. "We're developing the cells right now. The performance on these cells is tremendous," Kelty said. "The ESS market is a very attractive market. It's a big market. It's growing very quickly, and it's something that we can contribute to." GM also has a partnership with Redwood Materials for reusing its large EV batteries for energy storage systems. GM also offers EV charging and ESS for residential use through its energy unit. Meanwhile, Ford said in December that it plans to spend $2 billion to launch an energy business, including converting a Kentucky battery factory it had recently built with partner SK On to make units for energy storage by late 2027. It also plans to devote some factory space to make cells for residential storage at a factory in Marshall, Michigan. "Investors see value in Ford's ESS business," Morgan Stanley analyst Andrew Percoco said in an investor note in June. He's also called it an "underappreciated driver" of a path to profitability for Ford's Model e electric vehicle business. Ford Energy is part of the company's Model e electric vehicle segment, which has guided for $4 billion in losses in 2026 before reaching breakeven by 2029. A key turning point is expected to be the company's ESS business coming online in 2027. The Ford BlueOval Battery Park under construction in Marshall, Michigan. The plant will produce lithium-ion phosphate batteries for electric vehicles and smaller batteries for household use. Ford CEO Jim Farley told investors on the automaker's second-quarter earnings call in July that it's in the "third inning" of selling out the 20 gigawatt hours of production capacity for ESS after announcing a five-year framework agreement with renewable-energy service provider EDF Power Solutions North America. Defense industry. GM is years ahead of Ford when it comes to the U.S. defense industry. GM resurrected its defense unit in 2017 after a 14-year hiatus. It has worked with the U.S. military on many projects, but the automaker was recently awarded a contract by the U.S. Army to build infantry squad vehicles, or ISVs, that it said could exceed $1 billion, depending on congressional appropriations. While the contract amount is small compared with the company's $48 billion in revenue during the second quarter, the opportunities for the automotive industry in U.S. military operations are expected to grow. "Leveraging the capabilities, the scalability and the manufacturing abilities that come with all of the automotive companies and their tiered supplier is a huge benefit," Alfred Grein, executive director for research and technology integration for the U.S. Army Combat Capabilities Development Command Ground Vehicle Systems Center, told CNBC. GM said it expects its 2026 defense revenue to grow to almost $700 million and is targeting positive results on an earnings before interest and tax basis this year, while also building a backlog of future business. "We are also working with Lockheed Martin and other leading companies to expand speed, scale and resilience in the defense industrial base," GM CEO Mary Barra told investors in July. "Over time, all of this should make GM Defense a more meaningful and diversified contributor to our earnings." Grein, who manages the technology of manned and unmanned ground systems throughout the U.S. Army, said the Trump administration has made it easier for new companies, including automakers, to be granted such contracts. He also said domestic manufacturing in the U.S. is critical. "Obviously, the concern about foreign entities' involvement in particularly Department of Defense product becomes more and more crucial," Grein said. GM and Ford were included in a group of companies that were awarded prototype contracts to produce heavy infantry squad vehicles, which are bulkier versions of what the companies have worked on previously. Ford has not released many details about its U.S. defense efforts. The automaker on Wednesday, though, announced a tie-up with General Dynamics Land Systems and engineering firm Ricardo to compete for a next-generation vehicle for the United Kingdom's Ministry of Defence's Light Mobility Vehicle program. The defense efforts of GM and Ford are the latest in a long line of such initiatives, including, most notably, the "Arsenal of Democracy" during World War II in which the companies worked with the U.S. and the Allied nations to provide military supplies to fight Nazi Germany. "We already dominate in that market in the commercial world. We want to offer the U.S. government the same advantages that our commercial customers get," Farley told investors in July. "It's a great opportunity for us... We are discussing, continue to discuss, additional defense-related projects with the U.S. government." RECENT PRESS RELEASES September 5, 2026

MarTechAI
Jul 31st, 2026
Redwood Materials raises $550M to power AI data centres with repurposed EV batteries

Redwood Materials has raised $550 million to expand its battery energy storage business, targeting AI data centres requiring reliable power. The company, founded by Tesla co-founder JB Straubel, initially focused on recycling lithium-ion batteries for electric vehicles but has pivoted to stationary energy storage. The funding values Redwood at over $7 billion, up from $6 billion previously. Backers include Google parent Alphabet and Nvidia's venture arm. Redwood repurposes retired electric vehicle batteries with remaining capacity into large-scale systems for data centres. These provide backup power and grid resilience as AI workloads drive electricity demand. The investment reflects surging interest in AI infrastructure energy solutions. Whilst EV demand has slowed, battery storage for hyperscale data centres has emerged as a fast-growing market.

TechCrunch
May 11th, 2026
Redwood Materials hires former Tesla CFO, says IPO timing 'too early

Redwood Materials, the battery recycling and energy storage company, has appointed former Tesla finance chief Deepak Ahuja as its incoming CFO, reuniting him with founder and former Tesla CTO JB Straubel. Ahuja stated it is "too early" to discuss an initial public offering for the company. The appointment brings significant financial expertise to Redwood Materials as it continues to scale its battery recycling and energy storage operations.

Delaware Digital LLP
Apr 22nd, 2026
Redwood Materials lays off 10% in restructuring to chase energy storage business.

Redwood Materials lays off 10% in restructuring to chase energy storage business. 6 2 minutes read Redwood Materials has laid off around 135 employees, or roughly 10% of its workforce, as it restructures to better accommodate its growing energy storage business, TechCrunch has learned. The cuts come just five months after Redwood cut 5% of its workforce, and three months after it closed a $425 million funding round that boosted the battery recycling company's valuation to north of $6 billion, as TechCrunch previously reported. It's been a difficult time in the battery industry lately. Earlier this month, battery recycler Ascend Elements filed for Chapter 11 bankruptcy protection, citing "insurmountable" financial challenges. Some battery-makers have also restructured or gone out of business as the automotive industry in the U.S. has backed away from its most optimistic and ambitious plans to transition to electric vehicles. But Redwood Materials founder and CEO JB Straubel told employees that this new round of cuts is not a sign that the company is heading down the same path. "Redwood today is the strongest it's ever been," Straubel wrote in an email to the workers who weren't laid off, according to a copy viewed by TechCrunch. "The materials business is well on its way to profitability and has an exciting roadmap ahead." Straubel noted that Redwood "continue[s] to dominate the US battery recycling market" but also touted the company's "great momentum" in its new energy storage business. Redwood has recently announced deals with Crusoe AI and, most recently, electric automaker Rivian to provide recycled batteries that can be used to power those companies' facilities. The company declined to comment beyond the contents of Straubel's email. In his message, Straubel wrote that "parts of the company have expanded faster than needed to support the direction" of Redwood. As a result, he said Redwood is making cuts across multiple divisions, including the engineering and operations organizations, according to an employee who was granted anonymity to discuss the layoffs. Techcrunch event San Francisco, CA | October 13-15, 2026 "We are confident that we can deliver on our critical projects with a smaller team that is more focused," he wrote. "We have successfully adapted to changes in the market that have bankrupted many of our competitors." Straubel went on to write that he is "more excited than ever with our path ahead as we build the most integrated and cost-effective critical materials and energy storage business in the world." "This is a self-sustaining business and will continue to make this company more valuable over time. We have the team and the technology to do what no other company can," he wrote. Workers who were laid off were told by Redwood's chief HR officer that the layoffs were made "to sharpen our focus, our work and the size of our teams to support the direction Redwood is going in the future," according to a copy of her email, which was viewed by TechCrunch. Employees who were laid off are receiving severance and paid health benefits, according to Straubel's email, as well as "career transition assistance." "I am grateful to the approximately 135 employees who we say goodbye to today - they've all contributed to building Redwood," he wrote. When you purchase through links in its articles, DelawareDigitalNews.c may earn a small commission. This doesn't affect its editorial independence.

Business Wire
Apr 14th, 2026
Rivian and Redwood Materials deploy 10MWh energy storage using second-life EV batteries

Rivian and Redwood Materials have partnered to deploy battery energy storage at Rivian's Normal, Illinois manufacturing facility. The system will use over 100 second-life Rivian battery packs to provide 10 megawatt-hours of dispatchable energy, reducing costs and grid load during peak demand periods. Rivian will supply EV battery packs to Redwood, which will integrate them into a Redwood Energy system using the company's Pack Manager technology. The stored energy will be used on-site at Rivian's plant, offering significant cost benefits and faster deployment than traditional infrastructure. The partnership addresses growing US energy storage needs, with estimates suggesting over 600GWh of storage capacity required by 2030. By repurposing EV batteries before recycling, the companies aim to extend battery life, decrease reliance on imported energy storage and defer costly infrastructure upgrades.