Battery Software Integration Engineer, Energy Storage

Redwood Materials Inc.; Sacramento (CA); On-site; USD 172,000 - 287,000; Full time

Job summary

Redwood Materials is building the next generation of grid-scale energy storage and circular energy ecosystems. We seek a Battery Software Integration Engineer to connect second-life automotive batches with scalable software platforms and centralized energy storage systems.

You will lead software discussions with OEMs, develop translation layers, and deploy robust CAN, Ethernet, and Modbus interfaces while collaborating across hardware, controls, and BMS teams to ensure safe, reliable operation.

Qualifications

• Proven track record in controls and software engineering with a deep, practical understanding of lithium-ion battery architectures and external BMS software.
• Experience acting as a primary software POC with external suppliers, automotive OEMs, or internal cross-functional teams.
• Proficiency in modern software engineering practices and languages (Rust, Python, C/C++).

Responsibilities

• Be the lead software POC bridging legacy automotive hardware and modern software infrastructure.
• Design and deploy translation layers and software gateways to integrate second-life OEM battery packs into our central system.
• Develop containerized applications to handle external BMS communication, data parsing, and fault management.
• Build robust interfaces (CAN, Ethernet, Modbus) for diverse OEM packs without compromising system stability.
• Collaborate with power electronics, site controller, controls teams, and internal BMS developers for harmonized operation.
• Drive rigorous validation across simulation tools, HIL platforms, and physical battery hardware.

Skills

Rust

Python

C/C++

Tools

CAN

LIN

Automotive Ethernet

Job description

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.

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 packsoperateseamlessly 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.

Salary and Benefits

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:: $152,000 USD - $287,000 USD

The position is full-time. Compensation will be commensurate with experience.