Lead Controls & Firmware Engineer (Austin, TX)

• Controls (PLC Path) • Develop and test PLC programs (Siemens, Rockwell, or equivalent) for system, • module, and site-level controllers. • Implement safety interlocks, alarms, and operational sequences for energy storage • modules. • Configure and validate industrial communication protocols (Profinet, Ethernet/IP, • OPC UA, DNP3, MQTT). • Integrate different system components with Microcontroller based devices. • Set up and maintain a test bench / HIL environment for PLC validation. • Firmware (Microcontroller Path) • Design and implement embedded firmware in C/C++ (Rust optional) for • microcontrollers if we migrate from PLC-based controls. • Develop and test communication stacks, device drivers, and OTA update • mechanisms. • Ensure deterministic, real-time operation in power and energy storage applications. • Set up and maintain a test bench / HIL environment for validation. • DevOps & CI/CD • Build and maintain CI/CD pipelines (GitHub Actions or similar) for PLC code, firmware, • and test automation. • Implement version control best practices for branching, releases, and tagging • safety-critical builds. • Develop infrastructure to run automated test suites including regression, simulation, • and hardware-in-the-loop. • Energy Storage Integration • Apply knowledge of utility-scale energy storage systems (battery management, PCS • interfaces, dispatch logic). • Participate in the development of control panel design for various components of energy • storage system. • Design & develop EMS/SCADA application to map controls data into historians, HMIs, • and cloud telemetry systems for monitoring & management of the system. • Support system integration, commissioning, and field validation.

• Bachelor’s in Electrical, Controls, Computer Engineering, or related field. • 2–6 years of experience in PLC programming and/or embedded firmware development. • Proficiency with Siemens TIA Portal / Rockwell Studio 5000 (or similar). • Strong coding skills in C/C++ (Rust/Python a plus). • Experience with GitHub workflows, CI/CD pipelines, automated testing. • Familiarity with utility-scale energy systems or DERs. • Understanding of industrial networking and protocols (Profinet, Ethernet/IP, OPC UA, • DNP3, MQTT). • Exposure to energy storage standards (UL 9540, IEC 62443, IEC 61131-3, IEEE • 1547). • Knowledge of cloud-integrated controls (AWS IoT Core, InfluxDB, Timestream, • CloudWatch). • Experience setting up test benches, simulators, or hardware-in-the-loop systems.