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Experience Level
Experience
Qualifications
Bachelor's Degree in Engineering or related fieldExperience in quality engineering, preferably in energy storage or related industriesStrong analytical skills and proficiency in data analysis toolsExcellent communication and teamwork abilitiesFamiliarity with quality management systems and methodologies
About the job
Join our innovative team at Redwood Materials as a Field Quality Engineer specializing in energy storage solutions. In this pivotal role, you will be responsible for ensuring the highest quality standards in our energy storage products. Your expertise will help drive quality improvements and enhance customer satisfaction.
As a Field Quality Engineer, you will work closely with our operations and engineering teams, conducting quality assessments, analyzing data, and providing actionable insights to ensure product excellence. This position offers an exciting opportunity to contribute to the advancement of sustainable energy technologies.
About Redwood Materials, Inc.
Redwood Materials, Inc. is a leading provider of sustainable energy solutions focused on the circular economy and the recycling of batteries. Our mission is to create a sustainable future by developing innovative ways to recycle and reuse materials, helping to reduce waste and environmental impact.
Full-time|$145.5K/yr - $196.5K/yr|On-site|San Francisco, California, United States
About Redwood MaterialsAt Redwood, we are pioneering a sustainable battery supply chain that integrates recovery, reuse, and recycling, effectively keeping critical minerals in circulation and accelerating the energy transition. Established in 2017, we are committed to delivering low-cost, large-scale energy storage solutions and producing battery materials …
Full-time|$153K/yr - $248.5K/yr|On-site|San Francisco, California, United States
About Redwood MaterialsRedwood is pioneering a localized battery supply chain that integrates recovery, reuse, and recycling—ensuring critical minerals remain in circulation and facilitating the energy transition. Established in 2017, we are at the forefront of delivering affordable, large-scale energy storage while producing battery materials in the U.S. for the first time, utilizing batteries we already possess. The Redwood Vision: Modernizing the GridEnvision being at the forefront of a significant industrial transformation. Just as the electric vehicle revolution redefined automobiles as software-driven entities, Redwood Materials is revolutionizing the global energy grid. We go beyond merely managing batteries; we are constructing the "nervous system" for a sustainable energy economy.Our R&D team in San Francisco is spearheading the shift from outdated, hardware-centric infrastructures to agile, software-driven ecosystems. We are demonstrating that a sustainable, 100% renewable grid is not just a goal—it’s a technical reality fueled by advanced control intelligence. We seek the "architects of the electron" to help us phase out fossil-fuel peaker plants.Position: Senior Power Electronics Controls EngineerIn this role, you will spearhead the design and implementation of the intelligent control systems for our cutting-edge Battery Energy Storage Systems (BESS) and mixed-asset energy sites. You will oversee the entire lifecycle of our control systems—from initial conceptualization and advanced modeling to assessing real-world grid impacts. Your contributions will ensure that both recycled and new battery assets work in unison to stabilize the grid and maximize high-power conversion at an industrial scale.
Full-time|On-site|San Francisco, California, United States
Join Redwood Materials, a pioneer in energy storage solutions, as a Mechanical Design Engineer. In this role, you will leverage your engineering expertise to design, develop, and optimize innovative mechanical systems that enhance energy storage technologies. Collaborate with a dynamic team of professionals in a fast-paced environment to drive the future of sustainable energy.
Full-time|$145.2K/yr - $196.8K/yr|On-site|San Francisco, California, United States
About Redwood MaterialsAt Redwood, we are revolutionizing the global battery supply chain by integrating recovery, reuse, and recycling—ensuring critical minerals remain in circulation and accelerating the energy transition. Established in 2017, we are pioneering low-cost, large-scale energy storage solutions and producing battery materials domestically in the U.S. for the first time, all sourced from existing batteries.Position: Power Systems Engineer - Energy StorageKey Responsibilities:Collaborate with product and controls design teams to translate power system requirements into specifications for site and inverter controllers, thereby influencing control architecture at both system and plant levels.Engage in the design and optimization of power systems for energy storage applications, ensuring efficiency and reliability.Analyze and improve existing power systems, focusing on performance and scalability.
Join Our Team at Marathon FusionMarathon Fusion is at the forefront of engineering technologies, transforming fusion from experimental breakthroughs into functional power plants. While the industry focuses on innovating new fusion devices, we are dedicated to practical systems that enable fusion energy to operate at a scale that is relevant to climate change.Our team crafts essential fuel cycle and plant-level technologies that support stable isotope production, fuel cycle closure, and advanced blanket systems, facilitating energy generation along with high-value co-products.Founded in 2023, we are committed to constructing the components and systems necessary for making fusion a practical, sustainable, and dependable energy source for the 21st century.Our Company CultureAt Marathon Fusion, we foster a startup culture that values focus, adaptability, and prioritization in a dynamic landscape. Success in our environment hinges on proactive communication, building trust among team members, and a continuous willingness to learn and grow professionally. We highly value self-direction in all team members.Your Role as an Electrical EngineerAs an Electrical Engineer with Marathon Fusion, you will collaborate with our R&D team, which consists of mechanical engineers, physicists, and technicians, to prototype, test, and implement solutions that enhance fusion fuel cycles. Your contributions will be crucial in developing robust power electronics for our Plasma Centrifuge and Transmutation research and development initiatives.Key ResponsibilitiesDesign and develop power electronics subsystems, including capacitor banks, battery systems, power conversion, and switching.Prototype and test printed circuit boards (PCBs) for experimental systems.Integrate power electronics into high-voltage and high-current systems at the platform level.Collaborate closely with mechanical engineers, controls engineers, physicists, and technicians to build and integrate electrical systems into experimental platforms.Conduct testing, validation, and troubleshooting of hardware in laboratory settings.Promote safe design practices for high-energy systems.QualificationsWe welcome applications from candidates with various levels of experience. Ideal candidates will possess:Proven experience in power electronics design.Strong problem-solving skills and the ability to work collaboratively in a team environment.A proactive approach to learning new technologies and methodologies.
Full-time|$150K/yr - $237.5K/yr|On-site|San Francisco, California, United States
About Us at Redwood MaterialsAt Redwood Materials, we are revolutionizing the global battery supply chain by integrating recovery, reuse, and recycling. Founded in 2017, we are committed to keeping critical minerals in circulation and driving the energy transition. Our mission is to provide low-cost, large-scale energy storage solutions while producing battery materials in the U.S. for the first time, utilizing batteries we already have.Team ObjectivesOur team develops the software platform that enables optimized control and market participation of battery energy storage systems (BESS), with solutions operating on-site and in the cloud.Our work encompasses the entire technology stack: compute infrastructure, telemetry, asset modeling, alerting, feature ingestion and storage for forecasting and optimization, simulation, operational control orchestration, and seamless integration with energy markets.As a compact team, we uphold high standards for the quality and speed of our deliverables. We emphasize collaboration, trust, continuous learning, and engineering excellence while enjoying the process of building great solutions together.Your Role and ResponsibilitiesYou will actively contribute to our platform with potential focuses including:Data engineering for BESS — managing telemetry pipelines, feature ingestion, and storage for forecasting and optimizationSimulation and training infrastructure — developing platforms for orchestrating large-scale simulationsReal-time forecasting and optimization workflows — managing pipelines that drive BESS operationsEnergy market integration — overseeing data ingestion and bid managementSome of the technologies you will work with include Kubernetes, Rust, Python, NATS, PostgreSQL/TimescaleDB, SQLite, and more as our systems evolve.What We SeekStrong instincts for software design — you think systemically, reason from first principles, and grasp the real-world challenges of building available, reliable, scalable, and secure distributed systemsExperience with AI-accelerated development — you're comfortable leveraging AI to enhance software development processes
Full-time|On-site|San Francisco, California, United States
We are seeking a talented and motivated Reliability Engineer to join our innovative team at Redwood Materials. In this role, you will be responsible for ensuring the reliability and performance of our cutting-edge energy storage systems. You will collaborate with cross-functional teams to develop and implement reliability engineering strategies that enhance product performance and longevity.
Full-time|$127.5K/yr - $248.5K/yr|On-site|San Francisco, California, United States
About Redwood MaterialsRedwood is on a mission to localize the global battery supply chain by seamlessly integrating recovery, reuse, and recycling, ensuring that critical minerals remain in circulation while advancing the energy transition. Established in 2017, we are pioneering low-cost, large-scale energy storage solutions and producing battery materials domestically for the first time, utilizing recycled batteries.Position: Codes and Standards Lead, Energy StorageWe are seeking a Codes and Standards Lead to represent Redwood within the regulatory and standards landscape that impacts energy storage systems. This pivotal role will be responsible for influencing how emerging technologies are regulated, permitted, and deployed, while fostering safe, scalable innovation in a dynamic industry. This senior-level technical position demands strong thought leadership at the convergence of engineering, compliance, policy, and industry advocacy. Key Responsibilities Include:Develop and advocate for industry codes and standards that facilitate regulatory compliance.Collaborate with cross-functional teams to ensure alignment on compliance issues.Engage with regulatory bodies and industry associations to represent Redwood's interests.
About Us:Aurelius Systems is an innovative, VC-backed defense technology startup focused on developing autonomous, edge-deployed robotics systems utilizing directed energy for counter-unmanned aerial systems (UAS).Our mission is to create laser weapon systems capable of neutralizing drones effectively.With a compact team of around ten engineers, ex-US military personnel, and subject matter experts, we are at the forefront of advancing America's capabilities in directed energy. Our aim is to deliver the first cost-effective, reliable, and robust laser weapon system.Inspired by the principles of Marcus Aurelius, we embrace a culture of relentless effort, with a commitment to delivering exceptional results without excuses. We operate in a flexible environment, leveraging our San Francisco lab and office, alongside our Detroit manufacturing hub, and conduct weekly field tests on our expansive 400-acre private range.If you're an engineer who prefers to witness your work in action rather than confined to a lab, we invite you to continue reading.The Opportunity:As the Power Electronics Engineer, you will lead the development of the power subsystem for our directed energy weapon systems.Your role entails being the technical lead on all aspects ranging from battery pack architecture to laser diode integration. You will not merely implement existing designs; instead, you will define the architecture, make critical decisions, and take ownership of your system during range tests.You will collaborate closely with the electrical engineer on the team, focusing on a depth of knowledge rather than breadth. Your responsibilities will include battery management system (BMS) architecture, high-voltage conversion, fault protection, and power delivery under various field conditions. When a power system issue arises during a range test, you will be the go-to expert, identifying the problem and implementing a solution promptly.Your Responsibilities:Design, develop, and validate battery management systems for high-voltage battery packs, ensuring safe charge/discharge cycles, cell balancing, thermal management, and fault protection.Engineer high-voltage DC/DC converters, rectifiers, inverters, and diode driver electronics for optimal laser power delivery.Create robust wire harnesses for high-power laser and motor systems, focusing on connector selection, routing, shielding, and environmental resilience.Engage in hands-on prototyping, assembly, and testing on our expansive range.Conduct rigorous electrical, environmental, vibration, shock, and robustness testing to ensure system reliability.
Full-time|$145K/yr - $200K/yr|On-site|San Francisco
Astranis is at the forefront of satellite technology, crafting innovative satellites for high orbits, thereby broadening humanity's exploration of the solar system. Our cutting-edge satellites deliver dedicated, secure networks to a diverse clientele, including large enterprises, sovereign governments, and the U.S. military. With five satellites currently in orbit and numerous launches on the horizon, we are addressing a commercial contracts backlog exceeding $1 billion.As the go-to partner in satellite communications, Astranis is dedicated to fulfilling the stringent requirements of our clients regarding uptime, data security, network visibility, and customization. Backed by over $750 million in funding from top-tier investors, including Andreessen Horowitz, Blackrock, and Fidelity, our team of 450 engineers and entrepreneurs thrives in our 153,000 sq. ft. headquarters located in Northern California, USA.Power Electronics Team LeadIn your pivotal role as the Team Lead for the Power Electronics Engineering Team, you will spearhead the development and leadership of a talented group of Power Electronics engineers. Your support will be key in pushing the limits of what is achievable in geo-synchronous spacecraft design, enabling unprecedented performance in space.
Full-time|$150K/yr - $207K/yr|On-site|San Francisco, California, United States
About Redwood MaterialsAt Redwood Materials, we are revolutionizing the battery supply chain by focusing on recovery, reuse, and recycling. Our mission is to keep essential minerals circulating and facilitate the energy transition. Since our founding in 2017, we have been at the forefront of delivering cost-effective, large-scale energy storage solutions and producing battery materials domestically—utilizing the batteries we already possess.Service Engineer, Energy StoragePosition Summary:Redwood Materials is on the lookout for a dedicated Service Engineer to become an integral part of our newly established engineering team focused on the Battery Energy Storage System (BESS) product line. In this role, you will play a crucial part in diagnosing and resolving intricate technical challenges associated with our deployed BESS. You will support the Operations and Maintenance (O&M) team by conducting routine monitoring, preventive maintenance, and first-line troubleshooting. As part of the Service Engineering team, you will act as the technical escalation resource for O&M, responsible for in-depth diagnostics, system-level failure analysis, and implementing engineering-driven corrective measures.The Service Engineer ensures the safe, reliable, and optimal performance of our assets by acting as a liaison between field operations and engineering. You will translate operational challenges into engineering solutions and provide valuable feedback from the field to enhance product and system design. This position also offers the potential for leadership growth as the team expands.The ideal candidate is self-motivated, adaptable to a dynamic startup environment, and ready to tackle both technical and leadership challenges.
Full-time|On-site|San Francisco, California, United States
Join our innovative team at Redwood Materials as a Field Quality Engineer specializing in energy storage solutions. In this pivotal role, you will be responsible for ensuring the highest quality standards in our energy storage products. Your expertise will help drive quality improvements and enhance customer satisfaction.As a Field Quality Engineer, you will work closely with our operations and engineering teams, conducting quality assessments, analyzing data, and providing actionable insights to ensure product excellence. This position offers an exciting opportunity to contribute to the advancement of sustainable energy technologies.
Full-time|$153K/yr - $248.5K/yr|On-site|San Francisco, California, United States
Redwood Materials recovers, reuses, and recycles battery materials to keep critical minerals in circulation and support the energy transition. Since 2017, the company has focused on developing large-scale, cost-effective energy storage solutions and manufacturing battery materials domestically, often using resources from existing batteries. Role overview This Functional Safety Engineer position focuses on advancing a sustainable circular economy for lithium-ion batteries. The role centers on ensuring that energy storage systems (ESS) meet functional safety standards and on supporting the secure deployment of new ESS technologies. What you will do Lead compliance efforts for ESS functional safety, with particular attention to standards such as UL 1998 (Software in Programmable Components), UL 991 (Tests for Safety-Related Controls Employing Solid-State Devices), and UL 5500 (Remote Software Updates). Support certification activities and help align product development with functional safety requirements. Location San Francisco, California, United States
Full-time|On-site|San Francisco, California, United States
Join Redwood Materials as an Engineering Test Technician specializing in energy storage solutions. In this pivotal role, you will be at the forefront of testing and validating cutting-edge technologies that contribute to sustainable energy practices. You will work collaboratively with engineers and technicians to ensure the reliability and performance of our innovative energy storage systems.
Full-time|$137.5K/yr - $227.5K/yr|On-site|San Francisco, California, United States
About Redwood MaterialsAt Redwood Materials, we are pioneering a sustainable battery supply chain that integrates recovery, reuse, and recycling to keep essential minerals in circulation and promote the energy transition. Established in 2017, we are focused on delivering affordable, large-scale energy storage and producing battery materials domestically in the U.S., leveraging existing batteries.Senior Firmware Engineer, Energy StorageKey Responsibilities:Join an innovative engineering team at Redwood and play a vital role in designing, developing, and integrating cutting-edge products. This position emphasizes creating robust firmware from the ground up for ARM Cortex-M class microcontrollers, specifically for large-scale, distributed industrial applications. You will be responsible for communication with and control of various off-the-shelf devices, as well as developing control algorithms for power electronics.The ideal candidate is proactive, adaptable to a fast-paced startup environment, and enthusiastic about tackling new technical challenges. If you are excited to contribute to a dynamic team at Redwood, we would love to connect with you!The job level may be adjusted to match the applicant’s experience and responsibilities.
Full-time|$153K/yr - $248.5K/yr|On-site|San Francisco, California, United States
About Redwood MaterialsRedwood Materials is revolutionizing the global battery supply chain by integrating recovery, reuse, and recycling to keep essential minerals in circulation and facilitate the energy transition. Established in 2017, we are pioneering low-cost, large-scale energy storage solutions and manufacturing battery materials domestically for the first time, utilizing existing batteries.Role OverviewWe are in search of a Hardware Technical Program Manager (TPM) to spearhead the development, testing, and manufacturing of sophisticated box-level electronic assemblies. You will be responsible for program execution from concept through production, ensuring seamless coordination across hardware engineering, validation, supply chain, and operations. This role focuses on guaranteeing that our hardware — including circuit boards, flex assemblies, enclosures, connectors, and integrated box builds — meets reliability standards, undergoes rigorous testing, and is scalable for production.
Full-time|$160K/yr - $225K/yr|On-site|South San Francisco, California, USA
Senior Electrical Engineer, Power Electronics South San Francisco, CA | Ground Systems | Full Time Are you ready to make a significant impact on the world? Zipline is on a mission to revolutionize the logistics of delivery. We’re dedicated to addressing the world’s most pressing access challenges by developing the first instantaneous delivery system that treats all humans equally, no matter their location. From facilitating the national blood delivery network in Rwanda and distributing COVID-19 vaccines in Ghana, to providing on-demand home delivery for Walmart, and enabling healthcare providers to bring services directly to homes across the U.S., we’re reshaping the landscape of logistics for businesses, governments, and consumers alike. Our technology is sophisticated, but the concept is straightforward: a teleportation service that delivers what you need, when you need it. Through our robotics and autonomy platforms, we aim to decarbonize delivery, alleviate road congestion, and enhance access to essential goods globally. About the Role Zipline is in search of a seasoned electrical engineer to spearhead the design and development of high-performance power electronics systems supporting our drone charging and docking infrastructure. As a member of our Ground Systems team, you will be instrumental in managing all ground-based infrastructures that facilitate our autonomous delivery drones, including automatic docking, battery charging, thermal management, ground communication, and preflight checks. This position is key to advancing our next generation of drone logistics by addressing intricate challenges in power distribution, conversion, battery charging, high-performance microprocessor integration, high-speed network communication, and overall system integration. Your extensive technical expertise in power electronics will play a crucial role in shaping Zipline’s global infrastructure as we expand. Additionally, you will collaborate closely with cross-functional engineering teams to oversee the electrical system development from concept to production. This hands-on engineering position is ideal for candidates who aspire to push the boundaries of hardware in practical applications.
Full-time|$127.5K/yr - $248.5K/yr|On-site|San Francisco, California, United States
About Redwood MaterialsRedwood Materials is pioneering a sustainable battery supply chain that integrates recovery, reuse, and recycling—enabling the circulation of critical minerals and facilitating the energy transition. Established in 2017, we are proud to offer low-cost, large-scale energy storage solutions and produce battery materials within the U.S. for the first time, utilizing batteries that are already in circulation.Modeling and Architecture Engineer, Energy StorageAs the technical lead of the Energy Storage Modeling and Architecture team, you will play a critical role in the design, development, and integration of Redwood Energy’s innovative second-life battery product. You will serve as the subject matter expert in creating a multiphysics and technoeconomic modeling platform that informs the system design of this cutting-edge battery energy storage solution. These models must be robust enough to accurately size future projects while remaining agile enough to facilitate a wide range of design decisions.Additionally, you will be tasked with operationalizing these insights into an algorithm that optimally manages the use of each battery pack on our premises, maximizing the value extracted before recycling. This model will dictate operational parameters, including state of charge (SOC) windows and charge/discharge powers, along with decisions regarding when to replace a pack and what to use as a replacement.The ideal candidate will be self-motivated, adaptable to a startup culture, and enthusiastic about tackling novel technical challenges. You should possess experience in leading modeling teams within the battery energy storage or electric vehicle sectors while being a first-principles thinker capable of initiating new modeling projects independently.
Internship|$105K/yr - $105K/yr|On-site|San Francisco Office
About Atomic SemiAtomic Semi is revolutionizing the semiconductor industry with a compact, high-speed fabrication facility.Using cutting-edge technology and innovative simplifications, we are committed to building our own tools for rapid prototyping and improvement.Our dedicated team of skilled engineers spans various disciplines, including mechanical, electrical, hardware, and process engineering. We take ownership of the entire stack, from atomic-level design to architectural implementation. Our forward-thinking team is passionate about pushing technological boundaries.We believe in the mantra: smaller is better, faster is better, and building it ourselves is essential.With a well-equipped lab featuring 3D printers, advanced microscopes, e-beam writers, and general fabrication tools, we are ready to invent what we need as we progress.Founded by Sam Zeloof and Jim Keller, Atomic Semi combines Sam's unique experience of creating chips in a garage with Jim's extensive 40-year history in the semiconductor field.About the InternshipWe are seeking a passionate RF Power Engineering Intern for the fall semester, starting in September. This internship offers a preferred commitment of 4 to 8 months. You will be directly involved in rebuilding our chip fabrication processes, allowing you to engage in impactful projects. You’ll rapidly develop and test compact RF systems for our fabrication tools, identify challenges, prototype innovative solutions, and turn those prototypes into final products that reshape IC manufacturing.Our swift-paced environment prioritizes getting projects built and tested within days or weeks, rather than months. To apply, please submit a portfolio showcasing your previous work, particularly any medium-to-high complexity systems you've developed through personal projects or internships.Key ResponsibilitiesDesign and develop complete RF power systems, from architecture through schematic to layout.Perform accurate RF power diagnostics and metrology.Collaborate with engineering teams to enhance system performance and reliability.Participate in the prototyping and testing phases of RF systems.Document findings and present results to the team.
Full-time|$180K/yr - $237.5K/yr|On-site|San Francisco, California, United States
About Redwood MaterialsRedwood Materials is at the forefront of transforming the global battery supply chain by optimizing the recovery, reuse, and recycling of battery materials. Since our inception in 2017, we have pioneered large-scale energy storage solutions and are producing battery materials domestically for the first time, all sourced from existing batteries.Senior Software Engineer, Energy PlatformJoin our dynamic team focused on developing a cutting-edge software platform that drives intelligent control and market engagement for Battery Energy Storage Systems (BESS). Our work encompasses a comprehensive tech stack, including compute infrastructure, telemetry, asset modeling, alerting, feature ingestion, storage for forecasting and optimization, simulation, operational control orchestration, and integration with energy markets. We pride ourselves on our lean structure and our commitment to delivering high-quality, rapid software solutions. Our culture emphasizes collaboration, trust, continuous learning, and engineering excellence, making it a truly enjoyable environment to innovate and create.Key Responsibilities:Contribute to BESS data engineering by developing and maintaining telemetry pipelines and storage systems for effective forecasting and optimization.Design, build, and manage simulation and training infrastructures for large-scale simulation execution.Create and operate real-time forecasting and optimization workflows that streamline BESS operations.Facilitate energy market integration, including data ingestion and bid management processes.Collaborate across the full tech stack and team boundaries to ensure cohesive product functionality.Develop high-quality, well-tested software and continuously enhance it through iterative improvements.Utilize AI tools to expedite development while ensuring superior system design and code quality.
