Functional Safety Engineer, Energy Storage
Redwood Materials
$153,000 - $248,500 / year
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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.
Functional Safety Engineer, Energy Storage
Redwood Materials is pioneering a sustainable circular economy for lithium-ion batteries by transforming recycled materials into critical inputs for energy storage and next-generation battery technologies. We are seeking a motivated and experienced Functional Safety Engineer to join our team and play a key role in ensuring compliance with functional safety standards and advancing the safe deployment of new energy storage system (ESS) technologies.
Responsibilities will include:
- Functional Safety & Compliance: Lead compliance activities for ESS functional safety with a focus on 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 efforts and align product development with functional safety requirements
- Standards Application & Development: Apply safety principles and methodologies to ESS hardware and software. Facilitate and lead the development of FMEA’s, hazard analyses, safety cases, and test strategies. Represent Redwood in standards development activities to help shape emerging requirements for ESS functional safety
- Certification Management: Work with certification bodies (NRTLs) to establish and manage compliance programs for new technologies, ensuring timely approvals to support product introduction milestones. Partner closely with engineering and product teams to integrate safety requirements into development cycles
- Team Support & Alignment: Translate complex safety standards into actionable requirements for cross-functional teams. Provide technical guidance on functional safety practices and address feedback to align product designs with compliance needs
- Risk Management: Develop, document, and execute hazard mitigation and validation strategies. Support testing and verification activities to ensure system safety performance. Coordinate with internal and external stakeholders to resolve compliance and safety issues proactively
- Stakeholder Collaboration: Collaborate with engineering, manufacturing, and product design teams to streamline compliance and safety processes for ESS. Maintain strong relationships with certification bodies and industry partners to stay ahead of evolving safety requirements
Desired Qualifications:
- Bachelor’s or Master’s degree in Electrical Engineering, Computer Engineering, Systems Engineering, or related field
- Hands-on experience in embedded software development, ideally within safety-critical or regulated environments
- Preferred experience developing or working directly with microcontroller-based systems, including low-level software or firmware
- Proficiency in C for real-time embedded systems
- Strong background in UL 1998, UL 991, and UL 5500
- Familiarity with international functional safety standards such as IEC 61508, IEC/UL 60730, ISO 26262, or ISO 13849 (preferred)
- Experience working with Energy Storage Systems, power electronics, or safety-critical systems
- Demonstrated ability to apply functional safety methodologies (e.g., hazard analysis, safety cases, V&V planning)
- Experience managing compliance or certification processes with third-party testing/certification bodies
- Strong organizational skills, with high attention to detail
- Excellent communication skills, with the ability to explain complex technical requirements to diverse stakeholders
- A passion for sustainability and making the world a better place!
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.
The position is full-time. Compensation will be commensurate with experience.
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About this role
Redwood Materials is building the infrastructure for battery recycling and second-life energy storage at scale, and this role sits at the intersection of product safety and regulatory compliance. As a Functional Safety Engineer, you would lead compliance efforts for energy storage systems against UL and international standards, working directly with hardware and software teams to embed safety requirements into development from the start. Your responsibilities span hazard analysis and safety case development, certification management with third-party bodies, and representation in standards-setting activities—meaning your work shapes not just Redwood's products but emerging industry requirements.
This role demands hands-on expertise in embedded systems and functional safety methodologies. You should have a strong background in at least one of the key standards (UL 1998, UL 991, UL 5500) and ideally experience with IEC or ISO functional safety frameworks. Proficiency in C for real-time systems and direct experience with microcontroller-based development are expected; prior work in safety-critical or regulated environments is essential. Energy storage, power electronics, or similar domains are preferred but not required if your functional safety foundation is solid.
The position is fully remote from San Francisco and offers a salary range of $153,000–$248,500 based on experience. It suits engineers who want to move beyond isolated compliance tasks into strategic safety leadership on a technology that's central to the energy transition.
How this employer is doing
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In the news
Minerals processing startup Valor hires former Redwood Materials VP of engineering, Mining Weekly
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Pay for this role
$153,000 to $248,500 per year
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