Device - Software Engineer (Functional Safety)

Our Mission

SPAN develops products that accelerate the rapid adoption of renewable energy in the home. The flagship SPAN Smart Panel is the first true evolution for the traditional home electric panel, harnessing enhanced technology for metering, monitoring, and control. An expanded product suite of intelligent, integrated solutions radically lowers the cost and complexity of energy upgrades–including solar, batteries and EVs–empowering homeowners to be active, resilient and informed players in the energy market.

The Team and Role

SPAN's Device Software team is responsible for all of the software that is physically embodied in our hardware products. The Gen3 SPAN Panel is a distributed system of STM32H5 (Arm Cortex-M33) microcontroller modules that talk over CAN, meter power in real time, and open or close relays that sit directly between the grid, the home and its solar, battery and EV equipment. When that firmware makes a decision, real current moves.

We are building a dedicated Functional Safety (FuSa) firmware capability to take Gen3 firmware through certification as a Power Control System under UL 3141 and as Class B control software under UL/IEC 60730-1 Annex H. This is not a checkbox exercise: FuSa at SPAN spans how we architect and partition the firmware, how we detect fault