Principal Firmware/Software Engineer

Job description

Please note that we are unable to provide visa sponsorship for this position. About Proper Voltage: Proper Voltage is unlocking the next generation of battery technology across robotics, data centers, and defense. We're building intelligent battery systems that make advanced chemistries (sodium-ion, lithium-titanate, lithium-silicon) work in products that were never designed for them. Humanoid robots can upgrade power systems without redesigning their entire platform. Data centers get safer, cheaper backup power. Drones and autonomous vehicles get higher energy density without lengthy integration cycles. If you want to work on hard engineering problems that matter this is the place. Job Overview: We are looking for a Principal Firmware/Software Engineer to lead the technical direction of firmware running on real hardware in safety-critical environments. In this role, you will architect and drive development of firmware for our battery management systems on STM32 microcontrollers, owning core BMS functions, communication architecture, safety patterns, and the platform decisions that shape multiple products across our portfolio. You will set technical direction across firmware initia...