Battery Software Integration Engineer, Energy Storage

Redwood Materials; San Francisco (CA); On-site; USD 140,000 - 180,000; Full time

Job summary

Redwood Materials is architecting the future of grid-scale energy storage and circular energy ecosystems, expanding our software-defined platform for second-life batteries. The Battery Software Integration Engineer will lead OEM collaborations to translate legacy hardware into scalable software interfaces within our BESS framework.

You will design translation layers, implement containerized services in Rust and Python on Linux, and collaborate across power electronics, site controllers, and

Qualifications

• Proven experience in controls and software engineering for lithium-ion batteries.
• Experience as a primary software POC with external suppliers, OEMs, or cross-functional teams.
• Proficiency in Rust, Python, and C/C++ within automotive or industrial contexts.
• Strong knowledge of CAN, Automotive Ethernet, and diagnostic tooling.
• Ability to reverse-engineer and adapt OEM software for circular energy ecosystems.

Responsibilities

• Lead engineering conversations with OEMs to translate legacy hardware into software interfaces.
• Design and deploy translation layers and gateways for second-life battery packs.
• Develop containerized apps for BMS communication, data parsing, and fault management.
• Build resilient CAN, Ethernet, and Modbus interfaces for multiple OEM packs.
• Collaborate with power electronics, site controllers, and BMS teams to harmonize operations.
• Drive validation across simulations, HIL platforms, and hardware-in-the-loop tests.

Skills

Battery systems

BMS integration

Rust

Python

C/C++

Tools

Linux

Docker

Job description

Redwood is localizing a global battery supply chain that seamlessly integrates recovery, reuse, and recyclingkeeping 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.

About the Role

At Redwood, we are architecting the future of grid-scale energy storage and circular energyecosystems.As we rapidly scale our stationary Battery Energy Storage Systems (BESS), we are looking for a Battery Software Integration Engineer to build the bridge between diverse, second-life automotive batteries and our modern, scalable software platforms.

This role focuses on moving away from rigid, hardware-centric infrastructure toward a resilient, unified, and software-defined energy storage architecture. You will be instrumental in making varied OEM packs operateseamlessly off-vehicle, turning proprietary automotive components into reliable building blocks for the grid.You will serve as the lead Software POC for external OEMs, steering the critical technical discussions necessary to successfully adapt and integrate their battery systems into our architecture

Key Responsibilities

• Technical OEM Partnerships: Be the lead engineering voice bridging the gap between legacy automotive hardware and modern software infrastructure. Dive into the technical weeds with tier-1 suppliers to decode firmware, negotiate engineering solutions, and buildthe softwarehandshakes that make second-life integration a reality.
• Architectural Integration: Design and deploy translation layers and software gateways to seamlessly integrate vendor-off-the-shelf and second-life OEM battery packs into our centralized energy storage system.
• Modern Software Development: Develop robust, containerized applications to handle external BMS communication, data parsing, and fault managementutilizingmodern technologies like Rust and Python within Linux environments.
• System Resilience: Build highly resilient communication interfaces (CAN, Ethernet, Modbus) capable of dynamically handling the idiosyncrasies and proprietary logic of different OEM packs without compromising overall system stability.
• Cross-Functional Collaboration: Partner closely with power electronics, site controller,controlsteams, andour internalBMS developers to ensure safe, optimized, and harmonized operation of integrated modules within the broader BESS architecture.
• Validation & Testing: Drive rigorous validation across simulation tools, Hardware-in-the-Loop (HIL) platforms, and physical battery hardware to verify OEM BMS behavior, safety boundaries, and control algorithms under novel off-vehicle duty cycles.

Qualifications

• Technical Mastery: Proventrack recordin controls and software engineering with a deep, practical understanding of lithium-ion battery architectures, external BMS software, and pack-level integration.
• Stakeholder Engagement & POC Experience: Demonstratedexperience acting as a primary software POC with external suppliers, automotive OEMs, or internal cross-functional teams. Mustpossessthe communication skills and technical authority to confidently lead complex software discussions, drive alignment across organizational boundaries, and steer reverse-engineering efforts.
• Modern Tech Stack: Proficiencyin modern software engineering practices and languages (Rust, Python, C/C++).
• Protocols & Networking: Expertisein automotive and industrial communication networks (CAN, LIN, Automotive Ethernet) andtheir associateddiagnostic toolchains.
• Adaptive Problem Solving: Exceptional capability to reverse-engineer, troubleshoot, and adapt complex OEM electro-mechanical software systems for novel applications in circular energy ecosystems.

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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