Embedded Software Engineer Intern - Fall 2026
at Redwood Materials · 1001-5000 employees
Series E · $425M · Feb 2026
- Seniority
- Junior
- Location
- San Francisco, California, United States
- Posted
- 5d ago
rustc++ci/cd
at Redwood Materials · 1001-5000 employees
Redwood Materials is a battery recycling and materials company now rapidly scaling an energy-storage division that repurposes EV batteries to power AI data centers and other large industrial loads.
<div class="content-intro"><div class="page"> <div class="section"> <div class="layoutArea"> <div class="column"> <p><span style="font-family: helvetica, arial, sans-serif; font-size: 12pt;"><strong>About Redwood Materials</strong></span></p> <div> <p><strong>Redwood is localizing a global battery supply chain that seamlessly integrates recovery, reuse, and recycling </strong><strong>— </strong><strong>keeping critical minerals in circulation and driving the energy transition. Founded in 2017,</strong><strong> we’re delivering low-cost and large-scale energy storage and producing battery materials in the U.S. for the first time, all from batteries we already have.</strong></p> </div> </div> </div> </div> </div></div><p><strong><span data-contrast="none">Embedded Software Engineering Intern</span></strong><span data-ccp-props="{"335559738":120,"335559739":100}"> </span></p> <p><span data-contrast="none">We are at the precipice of a global energy transition. At Redwood Materials, we are moving beyond battery recycling to build the most advanced, circular energy ecosystem on the planet. Our goal is to move the industry away from static, hardware-heavy infrastructure toward agile, software-controlled energy assets.</span><span data-ccp-props="{"201341983":0,"335559739":160,"335559740":360}"> </span></p> <p><span data-contrast="none">While others build “black box” hardware, we are building software-defined power systems. Our Embedded Software team is responsible for the intelligence that drives our power stages and battery management systems, ensuring our energy storage solutions are safe, efficient, and capable of stabilizing the world's most demanding grids.</span><span data-ccp-props="{"201341983":0,"335559739":160,"335559740":360}"> </span></p> <p><span data-contrast="none">As an Embedded Software Engineering Intern, you'll work alongside our engineers on the real-time firmware that drives our power conversion units. You'll get hands-on exposure to the intersection of silicon and power — helping write and test low-level code that controls high-speed switching, manages thermal safety, interfaces with battery packs, and communicates with broader site infrastructure. This is a great opportunity to apply what you've learned in coursework to real embedded systems that ship at scale, with mentorship from experienced engineers along the way.</span><span data-ccp-props="{"201341983":0,"335559739":240,"335559740":360}"> </span></p> <p><strong><span data-contrast="none">Responsibilities will include:</span></strong><span data-ccp-props="{"335559738":120,"335559739":140}"> </span></p> <ul> <li data-leveltext="•" data-font="" data-listid="2" data-list-defn-props="{"335552541":1,"335559685":504,"335559991":288,"469769242":[8226],"469777803":"left","469777804":"•","469777815":"hybridMultilevel"}" data-aria-posinset="1" data-aria-level="1"><span data-contrast="none">Real-Time Control Firmware: Support the design and implementation of bare-metal software for power electronics, gaining exposure to PWM generation, ADC synchronization, and timing logic.</span><span data-ccp-props="{"335559739":120}"> </span></li> </ul> <ul> <li data-leveltext="•" data-font="" data-listid="2" data-list-defn-props="{"335552541":1,"335559685":504,"335559991":288,"469769242":[8226],"469777803":"left","469777804":"•","469777815":"hybridMultilevel"}" data-aria-posinset="2" data-aria-level="1"><span data-contrast="none">Low-Level Architecture: Assist in developing and testing drivers for microcontroller peripherals (SPI, CAN, Ethernet) under the guidance of senior engineers.</span><span data-ccp-props="{"335559739":120}"> </span></li> </ul> <ul> <li data-leveltext="•" data-font="" data-listid="2" data-list-defn-props="{"335552541":1,"335559685":504,"335559991":288,"469769242":[8226],"469777803":"left","469777804":"•","469777815":"hybridMultilevel"}" data-aria-posinset="3" data-aria-level="1"><span data-contrast="none">Hardware-Software Collaboration: Work with power electronics controls engineers to understand how controls theory translates into embedded code running on Cortex-R and Cortex-M architectures.</span><span data-ccp-props="{"335559739":120}"> </span></li> </ul> <ul> <li data-leveltext="•" data-font="" data-listid="2" data-list-defn-props="{"335552541":1,"335559685":504,"335559991":288,"469769242":[8226],"469777803":"left","469777804":"•","469777815":"hybridMultilevel"}" data-aria-posinset="4" data-aria-level="1"><span data-contrast="none">Battery Management Systems: Get exposure to how our power conversion firmware interfaces with real battery packs — including cell voltage/temperature monitoring, state-of-charge and state-of-health estimation, and the communication protocols BMS units use to report status and safety limits.</span><span data-ccp-props="{"335559739":120}"> </span></li> </ul> <ul> <li data-leveltext="•" data-font="" data-listid="2" data-list-defn-props="{"335552541":1,"335559685":504,"335559991":288,"469769242":[8226],"469777803":"left","469777804":"•","469777815":"hybridMultilevel"}" data-aria-posinset="5" data-aria-level="1"><span data-contrast="none">Build & Test: Help maintain software build scripts and write testable code, gaining experience with CI/CD pipelines used to validate firmware before it reaches the lab.</span><span data-ccp-props="{"335559739":120}"> </span></li> </ul> <ul> <li data-leveltext="•" data-font="" data-listid="2" data-list-defn-props="{"335552541":1,"335559685":504,"335559991":288,"469769242":[8226],"469777803":"left","469777804":"•","469777815":"hybridMultilevel"}" data-aria-posinset="6" data-aria-level="1"><span data-contrast="none">System Debugging: Learn to profile and debug embedded code, developing familiarity with tools like oscilloscopes, logic analyzers, and JTAG/SWD debugg