Software Validation Engineer, Energy Storage

About Redwood Materials Redwood is localizing a global battery supply chain that seamlessly integrates recovery, reuse, and recycling  —  keeping critical minerals in circulation and driving the energy transition. Founded in 2017,  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.   The Redwood Vision: Architecting the Future of the Grid   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 shift the industry from static, hardware-heavy infrastructure toward agile, software-defined energy assets. The Software Validation team ensures that these complex systems are safe, resilient, and ready for grid-scale deployment.   As a Software Validation Engineer , you are the bridge between pure code and physical reality. You will design and maintain the environments—Software-in-the-Loop (SIL) and Hardware-in-the-Loop (HIL)—that allow us to stress-test our power electronics and site controllers. Your mission is to build the automated frameworks that catch edge cases before they hit the field, ensuring every product we ship meets the highest standards of reliability.   Key Responsibilities   Validation Environment Design:  Architect and scale our  SIL and HIL environments (using platforms like Typhoon HIL, Opal-RT, or similar) to provide high-fidelity simulations of battery assets and grid conditions Test Automation Frameworks:  Lead the development of automated test suites in  Python . You will transition our validation processes from manual intervention to a fully automated, scalable framework V&V Strategy:  Define and execute comprehensive  Verification and Validation (V&V) plans, ensuring all software requirements for the site controller and embedded power electronics are met under normal and fault conditions CI/CD Integration:  Integrate automated HIL/SIL testing into our  CI/CD pipelines , providing real-time feedback to the development teams and serving as the final gate for production-ready code Hardware-in-the-Loop Interfacing: Design custom interface hardware and wiring for HIL benches, bridging physical I/O from our controllers to simulated power stages Root Cause Analysis: Work closely with the firmware and systems teams to debug complex failures found during validation, using logic analyzers, oscilloscopes, and telemetry logs to pinpoint issues Qualifications   Background: A BS or MS in Electrical Engineering, Computer Engineering, or a related field, combined with 2+ years of professional experience in software validation or test automation for hardware-focused systems HIL/SIL Mastery:  Proven experience with real-time simulation platforms ( Typhoon HIL, Opal-RT, or dSPACE ) and a deep understanding of how to model power electronics components in a virtual environment Automation Toolchain:  Expert proficiency in  Python  (specifically for test automation frameworks like Pytest) and familiarity with  Rust  and  C/C++ to navigate embedded codebases Hardware Literacy:  Comfortable in a high-voltage lab environment. You should be proficient with standard lab equipment (oscilloscopes, power supplies, electronic loads) and digital protocols like  CAN, SPI, and Ethernet Systematic Thinking: A dedicated mindset for "breaking" software. You have a track record of finding critical edge cases in complex state machines and control loops Infrastructure:  Experience with  Git ,  Jenkins/GitHub Actions , and containerization tools like  Docker for managing consistent test environments   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.  California Pay Range: $152,500 — $342,500 USD The position is full-time. Compensation will be commensurate with experience.   We collect personal information (PI) from you in connection with your application for employment with Redwood Materials, including the following categories of PI: identifiers, personal records, professional or employment information, and inferences drawn from your PI. We collect your PI for our purposes, including performing services and operations related to your potential employment. If you have additional privacy-related questions, please contact us at privacy@redwoodmaterials.com.

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