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Salary: USD 170,000 - 220,000 / annual
Redwood Materials, founded by JB Straubel (Tesla co-founder and former CTO), is North America's largest lithium-ion battery recycler and a leader in second-life battery energy storage. The company recovers and refines critical minerals from end-of-life batteries and has deployed the world's largest second-life battery project, delivering power to AI data centers using proprietary in-house engineered energy architecture.
The Staff Power Systems Engineer, Hardware in Loop will develop and validate battery energy storage systems (BESS) and inverter models using RTDS/RSCAD and Controller Hardware-in-the-Loop (CHIL) platforms for grid-connected and off-grid applications. This is a 100% on-site role working closely with the energy storage team.
Key responsibilities include:
- Design, develop, and validate power system and inverter control strategies using RTDS/RSCAD to meet project-specific grid requirements, including grid-forming and grid-following operation, ride-through, droop control, and microgrid performance
- Develop and maintain CHIL test platforms integrating RTDS with inverter controllers, site controllers, protection relays, metering, and communication interfaces; create test plans, automate test execution, analyze results, and maintain technical documentation
- Build and validate real-time power system models of BESS, PV, inverters, transformers, generators, loads, and balance-of-plant equipment for grid-connected and islanded applications
- Perform dynamic and transient studies to evaluate system stability, black start, load pickup, inverter interactions, fault response, protection performance, and mode transitions
- Identify and resolve control, modeling, communication, and hardware-in-the-loop integration issues using first-principles power system analysis and structured troubleshooting
- Support validation and benchmarking of PSCAD, PSS/E, and other offline simulation models against RTDS/CHIL results and field performance
- Develop and expand in-house RTDS laboratory capabilities, including model integration, I/O scaling, communication interfaces, test automation, equipment selection, and standardized validation procedures
Requirements:
- 3–5 years of experience as a power systems engineer with hands-on experience in RTDS/RSCAD, HIL/CHIL testing, or real-time power system simulation
- MS or PhD in Electrical Engineering, Power Systems, Controls, or closely related discipline
- Proven experience developing and supporting integrated hardware and software test environments, including hands-on troubleshooting and debugging
- Ability to develop test automation, scripts, or control functions using Python, C, C++, or similar programming language
- Strong experience with engineering simulation tools such as PSCAD, MATLAB/Simulink, or comparable platforms
- Solid understanding of electrical engineering fundamentals, circuit behavior, and control theory
- Practical experience with communication networks, laboratory measurement equipment, and real-time simulation platforms such as RTDS, OPAL-RT, or Typhoon HIL
