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About the Role
Redwood Materials is localizing a global battery supply chain that seamlessly integrates recovery, reuse, and recycling — keeping critical minerals in circulation and driving the energy transition. 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 Power Systems Engineer, Hardware in the Loop will develop and validate BESS and inverter models using RTDS/RSCAD and CHIL platforms for grid-connected and off-grid applications, perform dynamic and transient testing, and support control validation, system integration, and project-specific performance requirements. This is a 100% on-site role. The role works closely with the energy storage team to develop accurate system models and design recommendations grounded in industry codes and standards.
Responsibilities
- 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 Controller Hardware-in-the-Loop (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 clear technical documentation.
- Build and validate real-time power system models of BESS, PV, inverters, transformers, generators, loads, and balance-of-plant equipment for both 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 transitions between operating modes.
- Identify and resolve control, modeling, communication, and hardware-in-the-loop integration issues using first-principles power system analysis, simulation results, and structured troubleshooting.
- Support validation and benchmarking of PSCAD, PSS/E, and other offline simulation models against RTDS/CHIL results and field performance where applicable.
- 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.
- Proven experience developing and supporting integrated hardware and software test environments, including hands-on troubleshooting and debugging.
- 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, Typhoon HIL.
Skills
- RTDS/RSCAD
- HIL/CHIL testing
- Real-time power system simulation
- Python
- C
- C++
- PSCAD
- MATLAB/Simulink
- Communication networks
- Laboratory measurement equipment
- RTDS
- OPAL-RT
- Typhoon HIL
Location
- On-site
Work Type
- Full-time
Experience Level
- 3-5 years
Education Level
- MS or PhD in Electrical Engineering, Power Systems, Controls, or a closely related discipline.
Salary/Compensations
- Commensurate with experience
About the Company
- Redwood Materials was founded in 2017 by JB Straubel, co-founder and former CTO of Tesla, on a simple but radical idea: the critical minerals powering the energy transition already exist. They just need to come back.
- Today Redwood is the largest lithium-ion battery recycler in North America — recovering, refining, and redeploying critical minerals from end-of-life batteries back into the supply chain.
- On the energy side, Redwood has deployed the largest second-life battery project in the world, delivering power to AI data centers in months rather than years using proprietary energy architecture engineered entirely in-house.
- The company is profitable, the market it operates in is projected to grow 20 to 50 times over the next decade, and Redwood is the only company with the supply chain, the technology, and the operational scale to lead it.
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.