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  3. Power Electronics Engineer, Energy Storage
Redwood Materials logo

Power Electronics Engineer, Energy Storage

Redwood Materials
San Francisco, California
Full Time
Posted June 25, 2026
$125k - $243k
Energy Storage
~75 people viewed this recently
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Job Description

$125,000

Key Responsibilities

• Design high-voltage (800V–1.5kVdc, 480–800Vac) and high-power (10kW–200kW) converters tailored for utility-scale BESS and industrial infrastructure. • Conduct comprehensive topology comparison and trade-off analyses evaluating efficiency, power density, cost, and manufacturability. • Perform power-stage component sizing and Si/SiC MOSFET selection based on loss modeling and thermal management. • Design robust gate driver circuits and dedicated gate driver power supplies to ensure safe, high-frequency switching operations. • Lead the design, modeling, and specification of custom magnetic components, including transformers and inductors utilizing Litz-wire or PCB-winding architectures. • Architect the low-voltage (LV) subsystem, including auxiliary power supplies, sensing circuitry (voltage/current/temperature), and hardware-level protection. • Design and optimize EMI filters, including differential-mode and common-mode inductors, X/Y-caps, and damping elements. • Drive high-voltage, high-power PCB/PCBA layout design, ensuring clearance/creepage rules and signal integrity under high-noise environments. • Review, define, and amend system requirements for power electronics products. • Work with the Mechanical Engineering team to optimize cooling methods and thermal stack-up analysis and product geometry. • Collaborate with the Control and Firmware teams to develop, simulate, and implement converter control algorithms. • Define test specifications and verification methodologies with the validation team. • Work with the Supply Chain team to identify alternative components for dual-sourcing and define technical requirements for critical components (e.g., MOSFETs, film capacitors). • Identify test scopes and technical specifications for mass production testers (ICT, FCT, EOL) in close collaboration with the Manufacturing team. • Provide component-level data and operational profiles to the Reliability team to support rigorous product life cycle and failure analysis. • Work with the Compliance team to achieve industry certifications (e.g., IEEE 1547, UL 1741).

Requirements

• MS or PhD in Electrical Engineering, with a focus on power electronics. • 3–5 years of experience in electrical engineering, with a strong focus on power conversion or energy storage products, ideally for mass production. • Hands-on experience in high-voltage (up to 1.5kVdc and 480Vac) hardware design. • Experience with power semiconductor selection, gate drive design, and hardware protection circuits. Deep understanding of power electronics topologies and fundamentals (AC/DC, DC/DC). • Proficiency with circuit simulation, FEA simulation, and CAD tools (e.g., Simulink, LTspice, Ansys Maxwell/Q3D, Altium Designer). • Demonstrated ability to perform detailed layout of high-power, noise-sensitive PCBs in Altium or equivalent CAD software. • Proficiency with lab equipment, including oscilloscopes, impedance analyzers, network analyzers, and signal generators. Excellent written and verbal communication skills, with the ability to effectively collaborate across diverse cross-functional teams. • Foundational knowledge of control theory and embedded systems. • Strong analytical and systematic problem-solving skills. • Proven track record of rapid prototyping and hardware iterations based on cross-functional and supplier feedback. • Strong ability to select circuit components considering both electrical performance and manufacturability (DFM). • Experience mentoring test technicians to execute design verification, interpret test data, and define component maturity criteria. 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.

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