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Redwood Materials

Recycles lithium-ion batteries into materials

Power Electronics Controls Engineer - Energy Storage

Power Systems EngineeringConfirmed live in the last 24 hours
Full-timeSan Francisco, CA, USA$160k - $252.5kIn-person

About the Job

Requirements

  • A Master of Science or PhD in Electrical Engineering with a specialization in Power Electronics Control Systems; a Master of Science requires 3 or more years of relevant industry experience.
  • Deep theoretical and practical mastery of high-efficiency power conversion, including resonant topologies (LLC, CLLC, DAB) and advanced multi-level architectures such as Flying Capacitor (FC) and Active Neutral Point Clamped (ANPC).
  • Ability to design robust closed-loop controllers using Bode, Nyquist, and State-Space methods and implement them on digital signal processors or microcontrollers.
  • Expert-level proficiency with MATLAB/Simulink and PLECS for modeling and simulation.
  • Strong proficiency in C for real-time embedded systems.
  • Experience with Python for automation, scripting, and data analysis.
  • Familiarity with grid-interconnection codes such as IEEE 1547 and UL 1741 and their implications for controls development is highly desirable.

Responsibilities

  • Design and optimize advanced control algorithms for high-power Battery Energy Storage Systems, focusing on grid-forming, grid-following, and complex multi-asset energy site synchronization.
  • Develop bidirectional DC/DC and AC/DC control schemes for industrial-scale storage to ensure peak efficiency, thermal stability, and safety across operating modes.
  • Build high-fidelity digital twins of power stages and grid environments using PLECS and MATLAB/Simulink to predict system behavior under extreme transient and fault conditions.
  • Architect and lead Hardware-in-the-Loop testing environments using Opal-RT or Typhoon to stress-test control firmware before deployment.
  • Collaborate with battery and systems teams to implement control strategies that optimize the performance and longevity of mixed-asset arrays, including integration of recycled battery chemistries.
  • Partner with electrical, firmware, and thermal engineers to define the long-term roadmap for modern, resilient energy storage site controllers.

Desired Qualifications

  • Familiarity with grid-interconnection codes such as IEEE 1547 and UL 1741 and their implications for controls development.

About the Company

Redwood Materials

Recycles lithium-ion batteries into materials

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, NV
Founded
2017

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