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About the Role

We are looking for engineers to build the digital backbone that finally makes renewable energy baseload-ready and turns the grid into a truly digital, responsive network. As a Site Controller Software Engineer, you will be responsible for the high-level orchestration of our grid-scale storage sites. Operating at the "System Coordination" layer, you will design and implement the mission-critical logic that dictates how GWh-scale sites interact with the utility, industrial assets, and the Redwood Cloud. You will build the scalable, resilient software platform that makes our proprietary "Pack Manager" technology possible.

Responsibilities

Design and implement a scalable, resilient software architecture for the Site Controller, ensuring it can coordinate thousands of distributed microcontrollers with zero downtime.
Lead the development of multi-rate control systems, balancing high-level site coordination with real-time grid execution.
Collaborate with simulation and controls teams to optimize state-of-charge and battery longevity at the site coordination layer.
Lead the integration of high-speed closed-loop controls to ensure sub-cycle grid synchronization and precise command execution.
Architect robust fault-management frameworks, designing the state machines responsible for autonomous error recovery and failsafe modes.
Architect the physical and real-time networking layers.
Define the communication interfaces and network protocols that ensure low-latency, reliable data flow between the site controller, local assets, and upstream telemetry.
Design and define the critical software interfaces that enable our "Pack Manager" to serve as a universal translator.
Architect the communication layers to ensure high-availability and resilient data exchange between the centralized site controller and a heterogeneous fleet of downstream microcontrollers.
Design and implement highly modular, testable software.
Ensure that all site controller logic is built with automated unit and integration testing in mind, providing a robust foundation for system-wide validation.
Familiarity with distributed logging tools and optimizing telemetry data flows for real-time system health and performance tracking.

Requirements

A BS or MS in Computer Science or Electrical Engineering, combined with 2+ years of professional experience developing application-layer software for hardware-constrained systems.
Proficiency in Rust and Python.
Understand when to leverage Rust’s safety and performance for site orchestration and how to utilize Python for rapid tooling and simulation.
Deep familiarity with industrial communication protocols (Modbus TCP and CAN).
Experience with DNP3 or IEC 61850 is a significant plus.
Strong experience with Linux system administration and modern containerization technologies (Docker, Kubernetes) for edge computing.
Experience implementing and managing high-availability Firmware Over-the-Air (OTA) pipelines, ensuring secure and reliable updates from the cloud through to downstream controllers.
Experience with time-series databases and data visualization tools for monitoring system health and energy flows.
Proven track record of integrating vendor-off-the-shelf (VOTS) components—such as PV systems, industrial inverters, fire safety systems, and HVAC controllers—into a unified software platform.

Skills

Rust
Python
Modbus TCP
CAN
DNP3
IEC 61850
Linux system administration
Docker
Kubernetes
Firmware Over-the-Air (OTA)
Time-series databases
Data visualization tools

Location

California

Work Type

Full-time

Experience Level

2+ years of professional experience
Senior

Education Level

BS or MS in Computer Science or Electrical Engineering

Salary/Compensations

$180,000—$237,500 USD

About the Company

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.
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.

Equal Opportunity

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.